EEVblog: Recent Episodes
David L. Jones
I guess I have 1 million subscribers now.
Forum: https://www.eevblog.com/forum/blog/eevblog-1764-can-i-retire-now/
What lurks inside Dave’s decade old Logitech keyboard? Gross-out WARNING!
Forum: https://www.eevblog.com/forum/blog/eevblog-1762-logitech-keyboard-vs-food-gross-teardown/
Teardown of the new Micsig HMO14 4CH 200MHz 6th generation tablet oscilloscope with built in multimeter.
Follow up on the lack of input ptotection! https://www.youtube.com/watch?v=W2o8otvVML4
Forum: https://www.eevblog.com/forum/blog/eevblog-1761-micsig-mho14-tablet-oscilloscope-teardown/
00:00 – Micsig MHO14 12bit 6th generation oscilloscope
05:00 – Rubber baby buggy bumber
08:13 – The RF shield retaining clips
09:32 – The heat sink mounting is GLORIOUS!
11:34 – PCB detailed inspection
16:02 – ADC
19:20 – Front end
22:17 – The Multimeter front end is great, but WEIRD!
Today in the dumpster!
Forum: https://www.eevblog.com/forum/blog/eevblog-1760-today-in-the-dumpster-(july-12th-2026)/
The 10th ACES hardware meetup in Sydney at Engineers Australia. All talks and open mics.
https://luma.com/sydney-114f
00:00 – Engineers Australia HQ
03:19 – Intro
05:42 – Cibby Pulikkaseril from Zabidou
https://www.zabidou.com/
14:42 – Matt Crott from MAKO Aero – Prototype to Product
https://mako.aero/
25:28 – Panel discussion with Cibby, Matt and Brendan Hill from TEN13 Venture Capital
https://www.ten13.vc/
42:28 – Toby Tank from Onset, The Omnia Collective
https://theonset.com.au/
44:52 – An amazing demo of an omnidirectional semi-holographic display, the AndoTrope from Mike Ando!
https://www.riumplus.com/
50:06 – Student Tokamak nuclear reactor
52:31 – Ali and his DIY robot actuators
56:23 – Xtrainr fitness tracker hardware
https://xtrainr.ai/
59:18 – Startup robotics building vision system
1:03:37 – Haptic Virtual Reality Glove from On0
https://on0.com/
1:07:56 – Brian, a Year 12 High School Student doing drone development
1:09:09 – Dropbear AI fast cloud AI models
https://www.dreamscalelabs.com/
1:11:58 – Robocup Junior
https://junior.robocup.org/
1:14:46 – Hot Take: Hardware isn’t hard
1:17:41 – Jim from Taylor Street Creative Space
https://taylorstreet.space/
1:23:01 – Student Robotics
1:26:36 – No Pizza For You!
Forum: https://www.eevblog.com/forum/blog/eevblog-1759-aces-hardware-meetup-(startup-hardware-is-hard)/
A Greek Dumpster TV LED Backlight replacement Tragedy
Forum: https://www.eevblog.com/forum/blog/eevblog-1758-a-greek-dumpster-tragedy/
00:00 – Dumpster LG 4K TV backlight phosphor failure
02:34 – LED spectrum measurements
03:48 – Teardown
08:49 – LCD TV layers
09:36 – Come-a-gutsa
11:50 – Through the magic of Ali Express
14:49 – Replacing the LED strips
17:55 – Sagan discovers electric screwdrivers
19:31 – A Greek Tragedy
Sharp GF-7600 Boombox Repair Part 2 Electric Boogaloo
Dismantling, cleaning and fixing the dodgy mains switch contact.
Forum: https://www.eevblog.com/forum/blog/eevblog-1756-57-boombox-bodge-repair/
2026 Electronex Show Walkaround
Forum: https://www.eevblog.com/forum/blog/eevblog-1754-2026-electronex-show-walkaround/
Bart from Cleverscope returns to discuss and show off designing a 2000V isolated oscilloscope, and demonstrates measuring high voltage GaN transistors and Solid State Transformers.
https://cleverscope.com/products/CS548
Forum: https://www.eevblog.com/forum/blog/eevblog-1753-designing-a-2000v-isolated-oscilloscope-(cleverscope)/
WTF were Texas Instruments thinking changing the design and major specs of the 45+ year old jellybean NE5532 audio opamp WITHOUT changing the part number?!
New datasheet: https://www.ti.com/lit/ds/symlink/ne5532.pdf
Old datasheet: https://www.mouser.com/datasheet/2/405/ne5532a-556776.pdf
Change Notification: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5726/PCN20231114002.1.pdf
Onsemi datasheet: https://www.onsemi.com/pdf/datasheet/ne5534-d.pdf
Forum thread: https://www.eevblog.com/forum/chat/ti-ne5532-audio-opamp-changes/
OPI134: https://www.ti.com/lit/ds/symlink/opa4134.pdf
00:00 – TI have changed the classic jellybean NE5534
03:27 – Product Change Notifications (PCN’s)
06:43 – List of the changes
09:07 – Don’t worry abut that 600ohm load rubbish
10:45 – Let’s look at other manufacturers
12:50 – The OPA134 has a WILD change!
18:15 – They formally claim the changes have NO IMPACT! This could get them sued…
19:20 – Is the Single NE5534 impacted?
20:30 – This LMH6518 change might be killing oscilloscopes!
23:25 – Here is how it’s done: LM317
General forum related to this video: https://www.eevblog.com/forum/blog/eevblog-1752-wtf-texas-instruments-big-ne5532-changes/
5 different ways to measure phase angle on your oscilloscope.
00:00 – What is phase angle measurement?
01:48 – Automated measurement
06:38 – Cursor Measurement
12:24 – Graticule measurement
13:55 – Positive or Negztive? A trap for young players
14:50 – Another graticule method using horizontal shift
16:00 – How to increase horizontal measurement resolution
17:55 – Lissajous figure (X-Y mode) measurement
22:14 – Measure phase angle using Voltage? Yes, it’s possible!
Forum: https://www.eevblog.com/forum/blog/eevblog-1751-oscilloscope-phase-measurement-masterclass/
More Mailbag!
00:00 – Linus Tech Tips Screwdrivers!
https://www.lttstore.com/collections/ratcheting-screwdrivers
https://www.lttstore.com/collections/precision-multi-bit-screwdriver
15:30 – Closer look at the screwdrivers
18:52 – Red Light Skin Therapy device
22:31 – Spectrum measurements
27:19 – EZABoard Arduino Learning Kit
https://ezaboard.com/
Videos shot on 16mm film!
https://odysee.com/@MatthewMulder:d
35:40 – Vintage Tek Museum CurveBug Curve Tracer Debugging Tool
https://vintagetek.org/curvebug/
Forum: https://www.eevblog.com/forum/blog/eevblog-1750-mailbag/
Review of the Werewolf VFLEX USB-C power supply cable system.
https://werewolf.us/collections/werewolf-products/products/vflex-3-pack-starter-kit
Forum: https://www.eevblog.com/forum/blog/eevblog-1749-werewolf-vflex-usb-c-power-supply-adapters/
The dumpster really delivered today, with no less than FOUR 4K Retina display iMac’s! Plus a Nikon DSLR camera!
Forum: https://www.eevblog.com/forum/blog/eevblog-1748-dumpster-imac-bonanza/
Demonstrating the difference between Schottky diodes and PN junction silicon diodes, and how your multimeter can influence your measurement when troubleshooting.
Answering an interesting Twitter question.
https://x.com/blind_via/status/2052223991839170919
https://www.tti.com/content/ttiinc/en/resources/blog/infographics/schottky-diodes.html
https://engineering.purdue.edu/~ee606/downloads/ECE606_f12_Lecture17.pdf
Forum: https://www.eevblog.com/forum/blog/eevblog-1746-schottky-vs-pn-diodes-measurement-traps/
00:00 – Twitter question
01:21 – Recreating the problem
03:08 – Why doesn’t it read zero volts? Let’s try a PN junction diode
04:21 – Schottky vs PN Junction diodes, they are NOT the same!
06:06 – What about a diode tester?
07:15 – Why doesn’t the Schottky diode work like a diode?
08:39 – It’s a multimeter measurement TRAP!
10:37 – A closer look at Schottky diodes
14:21 – Datasheet inspection, and advantages vs disadvantages of Schottky diodes
15:21 – Reverse leakage current, PN vs Schottky
17:16 – THREE orders of magnitude difference!
22:29 – Digital vs Analog multimeter, Analog WINS!
A tribute to the 555 timer and Hans Caminzind, which turns 55 years old this year. Released on May the 5th, International 555 Timer Day at 5:55pm with a length of 5:55
And Dave demonstrates blowing out the birthday candle with his 555 Killer One Shot circuit.
Use coupon code 555 for 5% off on the EEVblog store
Hardware Store: https://eevblog.store/
https://spectrum.ieee.org/chip-hall-of-fame-signetics-ne555
https://www.righto.com/2016/02/555-timer-teardown-inside-worlds-most.html
http://www.historyofelectronics.com/Much-Ado-About-Almost-Nothing.pdf
Forum: https://www.eevblog.com/forum/blog/eevblog-1746-the-555-is-55-years-old!/
Testing the loudness of a new version of the BM2257 multimeter firmware using the CRY2851 Class 1 sound level meter.
https://www.crysound.com/product/cry2851-sound-level-meter/
COUPON CODE: LOUD for 10% off the BM2257
Hardware Store: https://eevblog.store/
00:00 – BM2257 Firmware changes
01:58 – Crysound CRY2851 Class 1 Sound Level Analyser
06:26 – Lab baseline dBA measurement
07:39 – dBA vs dBC vs dBZ weighting
08:51 – BM2257 Buzzer measurements
10:06 – Low frequency spectral analysis (How Low is Dave’s voice?)
11:00 – Designing and building a DIY acoustic test chamber
11:57 – BM2257 frequency spectrum analysis
14:04 – Different angle and distance repeat measurement
15:09 – Conclusion
17:26 – Bonus ventilation fan measurement
Forum: https://www.eevblog.com/forum/blog/eevblog-1745-how-loud-is-the-continuity-tester/
The DP700 is Micsig’s third suck of the sav on a high voltage differential probe. Not to be confused with the MDP700 which this replaces.
https://www.micsig.com/DPA/
00:00 – Comparison to the DP10007 and MDP700
03:58 – Unboxing of the DP700
05:52 – CMRR measurement hardware setup
09:52 – Sanity check gain and bandwidth check.
11:29 – Zero function
12:25 – Measuring the CMRR
16:30 – Trap for young players. RMS vs AC RMS, it’s all in the sigma
17:44 – Another trap for young players, double sigma
19:07 – CMRR at 100MHz
22:41 – Real world test on a 100V GaN MOSFET
25:28 – Teardown
29:44 – PCB inspection
Forum: https://www.eevblog.com/forum/blog/eevblog-1744-new-micsig-dp700-high-voltage-differential-probe/
Teardown photos:
Dave shows you how to use your oscilloscope probe to detect mechanical vibrational modes on your PCB. And shows off the Crysound Acoustic Imaging Camera!
https://www.kickstarter.com/projects/pocket-acoustic-cam/crysound-pocket-acoustic-imaging-camera/
Forum: https://www.eevblog.com/forum/blog/eevblog-1743-mechanical-vibration-detection-with-your-oscilloscope-probe/
More Dumpster Diving. What did we score today?
Forum: https://www.eevblog.com/forum/blog/eevblog-1742-today-in-the-dumpster-room/
More amazing Mailbag!
00:00 – BOOK Professional Electronic Design Best Practices, Volume II
06:01 – A Crusty Nautalytics Simple Compass
11:46 – DPS DIN Power Supply Modules
https://digitalpowersystems.eu/hdr20/
USB-AC-PD
20:22 – The Book: The Ultimate Guide to Rebuilding a Civilization
Forum: https://www.eevblog.com/forum/blog/eevblog-1741-mailbag/
Looking at a dumpster diving Dell laptop HAUL! with Sagan!
Forum: https://www.eevblog.com/forum/blog/eevblog-1740-dumpster-diving-dell-laptop-haul!/
The Beelink EQR6 Ryzen 9 Mini PC mysteriously failed after an upgrade, why?
00:00 – This Beelink EQR6 failed just after an upgrade, WHY?
02:28 – Is is the flat flexes?
04:45 – Woah, what’s THIS?
07:17 – Nooooooooo! It can’t be…
Forum: https://www.eevblog.com/forum/blog/eevblog-1739-unusual-fault-in-a-beelink-ryzen-9-mini-pc/
Everyone’s favorite Solar Roadway, the OG Solar Freakin’ Roadways is still going strong with NEW EQUITY FUNDING!
WeFunder: https://wefunder.com/solar.roadways.incorporated
StartEngine: https://www.startengine.com/offering/solar-roadways
US Army contract: https://www.highergov.com/contract/W5170122C0119/
Forum: https://www.eevblog.com/forum/blog/eevblog-1738-solar-freakin-roadways-new-funding!/
A chat with Alex Lidow, the inventor of the original Power MOSFET and HEXFET at International Rectifier.
Former CEO of International Rectifier (founded by his father!), and now Founder & CEO of EPC (Efficient Power Conversion) that make the most efficient GaN FET’s on the market.
https://epc-co.com
We cover everything from inventing the power MOSFET on his first day on the job to silicon physics and AI data centres and humanoid robots.
00:00 – Alex Lidow
05:08 – What’s the definition of an Engineer?
06:07 – Inventing the Power MOSFET 400V/1ohm first day on the job with Tom Herman
09:16 – The flash of brilliance: Inject charge into the region
10:36 – Steve Wozniak and the Apple IIE PSU
12:02 – IRF100 and IRF130 HEXFET
14:18 – 42 Competitors!
15:54 – Major Innovations in MOSFET’s
17:00 – CoolMOS from Siemens
18:23 – TrenchMOS from Vishay
19:17 – Silicon Carbide started as a diode
21:46 – 2D Electron Gas (2DEG)
24:40 – Silicon MOSFET game is won by the deepest pockets
25:09 – Getting fired from IR and starting Starting EPC
26:28 – Get that damn Gallium out of my Silicon fab!
29:31 – Integrated GaN Solutions
31:03 – The physics of Radiation Hardening in MOSFET’s
34:23 – The market for high voltage transistors
36:00 – The 200V and under MOSFET market is performance driven
39:13 – Protecting Patents in China is EASIER than in the US!
41:41 – AI Data centres and NVIDIA modules
44:46 – 800V AI power module architecture
47:42 – Multi level DC-DC topology ISOP
49:46 – Frequency trade-off in LLC DC-DC converter design
56:13 – Humanoid robots
58:16 – What is the most popular GaN?
59:24 – Buyouts?
01:00:36 – Evaluation Boards
01:03:34 – Darkening the digital sky
Forum: https://www.eevblog.com/forum/blog/eevblog-1737-alex-lidow-inventor-of-the-power-mosfet/
What are the TOP 5 Jellybean MOSFET’s?
00:00 – MOSFET vs BJT
02:21 – What is a Jellybean?
04:14 – 2N7002 N-Channel wimpy generic
13:10 – BSS84 P-Channel wimpy generic
14:47 – AO3400 N-Channel SOT-23
21:30 – Continuous Current vs Pulse Current Rating and SOA Graph
24:15 – AO3401 P-Channel SOT-23
25:56 – AO4410 N-Channel SO-8 High Current
30:10 – AO4407 P-Channel SO-8 High Current
31:18 – IRLML2502 N-Channel Low Gate Voltage
33:51 – IRLML6401 P-Channel Low Gate Voltage
34:15 – IRLZ44 N-Channel Big Package
37:21 – IRF510 Special Mention
37:37 – IRF4905 P-Channel Big Package
Jellybean Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtdQF-m5UFZ5GEjABadI3kI
Forum: https://www.eevblog.com/forum/blog/eevblog-1736-top-5-jellybean-mosfets/
Nobody truly understands the complexity of modern supply chains for the technology we take for granted. How the AI supply chain works, from ChatGPT to sugercane
https://aisupplychain.vercel.app/
https://x.com/chiefofautism
Forum: https://www.eevblog.com/forum/blog/eevblab-138-you-dont-understand-supply-chains!/
How to measure DC power rail high bandwidth waveforms with the offset control on your oscilloscope. Active Probes, Passive Probes, Z0 probes, and specific DC Power Rail Probes are compared.
00:00 – How to measure power rails with Active Probes and Power Rail probes
08:03 – Signal Skew
09:54 – 10:1 Passive Probe
10:18 – Example of an 8 bit scope with no offset adjust
10:39 – Trap for young players. Input referred offset.
12:41 – Cheap DIY Z0 Probe
14:41 – Offset range changes based on V/div, don’t be fooled.
16:48 – Rigol Scopes
17:20 – Siglent Scopes & How models differ
18:53 – Why the complete opposite between Keysight/R&S and Rigol/Siglent?
PRP1: https://www.eevblog.com/forum/testgear/prp1-low-cost-2ghz-power-rail-probe/
Power Rail Probe DIY project in Silicon Chip:
https://www.siliconchip.com.au/Issue/SC/2025/November
Forum: https://www.eevblog.com/forum/blog/eevblog-1735-oscilloscope-dc-offset-explained/
The Uni-T UT892 High Voltage Multimeter is unusually rated to 2000V!
Teardown and testing time, is it any good?
00:00 – Uni-T UT892 2000V High Voltage Multimeter
02:39 – Unboxing
03:40 – FAIL right off the bat! Probes matter.
05:53 – Teardown
08:06 – Where’s the MOV’s?
09:07 – The case design leaves a lot to be desired
09:23 – PCB switch contact side
09:44 – Houston, we have a clearance problem.
11:20 – It’s going in unprotected
13:08 – The case sucks
13:56 – High Voltage testing within range
15:15 – What’s up with this NCV tester?
16:48 – Do we care about the autoranging and continuity tester at this point?
17:35 – 2500V test
19:05 – 5000V test!
21:03 – Inspection + chipset
21:26 – 5000V test again with cover off
22:20 – What a surprise! It failed exactly where I said it would.
23:25 – Proper high voltage design
24:50 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1734-uni-t-ut892-2000v-high-voltage-multimeter-tested/
More mailbag!
00:00 – Vetus Pars Retro Chip Tester
https://retrotroniks.com/product/vetus-pars-retro-chip-tester/
17:05 – PRP1 2GHz Power Rail probe
https://www.eevblog.com/forum/testgear/prp1-low-cost-2ghz-power-rail-probe/
22:07 – PRP1 Teardown
24:10 – PRP1 Circuit Explanation
27:08 – PRP1 Testing
32:09 – Comparison with Agilent 2GHz Active Probe
Forum: https://www.eevblog.com/forum/blog/eevblog-1733-mailbag-2ghz-power-rail-probe-retro-chip-tester/
How much capacity has this 20+yo 1000+ cycle Panasonic 14500 lithium ion battery lost?
00:00 – Panasonic electronic shaver teardown
06:30 – Battery dimensions match the type number
08:24 – The battery capacity test setup
10:40 – 500mA Constant Current test
11:38 – How much energy is left in a “flat” battery?
13:46 – 250mA Constant Current test
14:54 – 100mA Constant Current test
15:13 – Results analysis. Talking head Dave
19:11 – How to scale time in Excel
21:20 – How to get a characteristic battery capacity graph in Excel
24:35 – Energy in a battery and the characteristic curve area, it’s just an integral
26:30 – Optimising product design and battery cutoff voltage
29:13 – Battery current measured
Forum: https://www.eevblog.com/forum/blog/eevblog-1732-20yo-1000-cycle-panasonic-li-ion-battery-tested/
The $50 Ziboo 17B Pro 1500V Multimeter vs the $150 Fluke 17B MAX
Is it any good?
Forum: https://www.eevblog.com/forum/blog/eevblog-1731-$50-ziboo-17b-pro-multimeter-vs-$150-fluke-review/
Part 8 of the AC Basics tutorial series. Looking at the difference between Apparent, Reactive, and Real Power. Plus Power Factor
00:00 – Voltage & Current phase relationship
02:28 – Real Power
07:09 – Apparent Power
12:02 – Power transmission systems and copper losses
17:45 – Reactive Power
20:17 – It’s all a Fugazi, it doesn’t exist
21:52 – Power Triangle
23:46 – Power Factor
AC Tutorial Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHvD6M_7WeN071OVsZFE0_q-
DC Tutorial Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtVLq2MDPIz82BWMIZcuwhK
Forum: https://www.eevblog.com/forum/blog/eevblog-1730-ac-basics-tutorial-part-8-apparent-reactive-real-power/
Ohms law applied to AC.
AC Tutorial Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHvD6M_7WeN071OVsZFE0_q-
Forum: https://www.eevblog.com/forum/blog/eevblog-1729-ac-basics-tutorial-part-7-ac-ohms-law/
Part 6 of the AC basics tutorial video series, covering Impedance, Conductance, Susceptance, and Admittance.
00:00 – AC Tutorial Series Part 6
00:56 – Impedance
07:32 – Reactance vs Impedance
08:17 – Conductance
11:21 – The Fluke 87V measures conductance!
12:12 – Susceptance & Admittance
13:53 – Tying it all together
AC Tutorial Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHvD6M_7WeN071OVsZFE0_q-
Forum: https://www.eevblog.com/forum/blog/eevblog-1728-ac-basics-tutorial-part-6/
Simple repair of a Casio CT-X700 keyboard, with Sagan, and some really bad music.
Forum: https://www.eevblog.com/forum/blog/eevblog-1727-repair-casio-ct-x700-keyboard/
Repairing a failed EV charger DC-DC converter had an unusual twist.
Forum: https://www.eevblog.com/forum/blog/eevblog-1726-repair-of-an-ev-charger/
Sagan joins Dave to open more packages, in everyone’s favorite segment Mailbag.
00:00 – The Connector Book! by Davide Andrea
https://connectorbook.com/
Listen to Davide on The Amp Hour: https://theamphour.com/708-all-the-connectors-with-davide-andrea/
11:02 – BLE CaberQu USB-C cable tester
https://caberqu.com
22:02- Teardown of the CaberQu
24:22 – Snaptron FREE Sample Box
https://www.snaptron.com/free-samples/sample-box/
24:55 – Sagan’s Knife Skills!
32:10 – Elecrow CrowPanel Pi Terminal
https://www.elecrow.com/pi-terminal-7-1024-600-ips-hmi-panel-all-in-one-module-raspberry-pi-cm4-industrial-computer-with-rich-interfaces.html
Forum: https://www.eevblog.com/forum/blog/eevblog-1725-mailbag-with-special-guest-sagan/
Teardown of the classic Australian Made BWD 603B Minilab that was saved from the UTS dumpster.
Schematic:
Forum: https://www.eevblog.com/forum/blog/eevblog-1724-bwd-603b-minilab-retro-teardown/
Review of the AlienTek DM40 Multimeter/Oscilloscope
00:00 – Alientek DM40C Multimeter and Oscilloscope
02:12 – Unboxing
03:51 – What’s with the rotating tilting bail?
06:15 – Power on
08:53 – The Trend Chart is really nice
10:19 – Online/Offline mode, what IS this?
11:58 – Banana jacks please
12:07 – Megaohms interference issue
13:20 – Autoranging speed & Continuity & Diode
14:08 – No AutoHold
14:31 – Isolated inputs?
14:58 – Calibration checks
16:52 – Capacitance interference?
18:37 – Relative mode
19:10 – Colour LCD inside and outside
20:04 – Temp is a bit off
20:15 – No internal recording
20:53 – Reading memory
22:02 – Oscilloscope functionality
26:28 – Function Generator
28:46 – FFT
29:09 – Bluetooth functionality
31:33 – Three Finger Screen Shot
32:31 – It’s got magnets!
32:51 – Teardown
37:56 – Analog front end
38:46 – Power consumption measurement
39:03 – PCB inspection talking head
45:08 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1723-alientek-dm40-multimeteroscilloscope-review/
Re-telling of a manufacturing hardware war story talk I gave at a recent hardware meetup in Sydney.
https://luma.com/Sydney-hardware-meetup?k=c
How a simple manufacturing change cost a company millions of dollars.
00:00 – Sydney Hardware Meetup
01:16 – Seismic Oil Survey Exploration: How to find oil
03:29 – Seismic survey vessels are HUGE!
04:25 – Solid Towed Array Streamers
05:56 – On the back deck of the ships
06:33 – Leading edge low noise 24bit ADC’s
07:23 – Hydrophone module construction
09:33 – The actual war story – Continuous Improvement…
14:12 – It CAN’T be that, it’s impossible…
16:58 – Field repair wasn’t easy…
Forum: https://www.eevblog.com/forum/blog/eevblog-1722-manufacturing-hardware-war-story/
Qualcomm have bought out Arduino, and several weeks later have altered the Terms & Conditions. Dave does a deep dive of the changes.
https://www.arduino.cc/en/terms-conditions/
https://web.archive.org/web/20250912221625/https://www.arduino.cc/en/terms-conditions/
00:00 – Qualcomm have acquired Arduino. I’ve got a bad feeling about this…
01:02 – How much did they pay for Arduino?
02:54 – They have changed the Terms And Conditions
03:54 – Arbitration Disputes
04:21 – Kids? Bugger off!
05:11 – Are they now restricting reverse engineering?
06:35 – Irrevocable! Give us everything, forever.
07:08 – Revocable! We can take away your stuff.
08:26 – No competition for you!
09:46 – Patents
10:25 – Export & Trade Compliance. No selling to naughty people.
11:10 – For Personal Use Only
11:36 – Changes to the Changes. We can shut it all down.
12:24 – We can suspend your account
12:49 – Arbitration blah blah
13:31 – LibreDuino
Forum: https://www.eevblog.com/forum/blog/eevblog-1721-rip-arduino-(new-tc-deep-dive)/
More mailbag!
00:00 – Biggest mailbag load EVER. Too much random vintage USSR stuff to list…
26:24 – Logicgat Digital Logic training board.
https://logicgat.es/
31:22 – SLogic16U3 $69 USB3 800MHz Logic Analyser
https://wiki.sipeed.com/hardware/en/logic_analyzer/slogic16u3/Introduction.html
Forum: https://www.eevblog.com/forum/blog/eevblog-1720-mailbag-ussr-bonanza-logic-training-$69-logic-analyzer/
Expanding the AERL home storage battery from 25kWh to 75kWh!
Also replacing the 5kW Deye hybrid inverter with an 8kW Solis hybrid inverter.
And installing a changeover switch to power most of the house from the Backup port in the new inverter.
https://www.aerl.com.au/products/life2-battery
https://www.thomsonenergy.com.au/
Solis s6-eh1p8k-l-plus-au
https://www.solisinverters.au/uploads/files/202506/Solis_Manual_S6-EH1P(3-8)K-L-PLUS_AU_V1,1(20250530).pdf
Forum: https://www.eevblog.com/forum/blog/eevblog-1719-75kwh-home-storage-battery-expansion/
00:00 – 75kW Battery Expansion
05:11 – The new AERL 10 way outdoor battery cabinets
07:28 – New Solis 8kW Hybrid Inverter
08:27 – 70sqmm DC battery cable
09:22 – New Changeover switch + New 10sqmm cable run
10:19 – The old 25kWh rack
11:03 – New grid side energy meter
12:03 – Wire strippers or Pliers?
14:10 – Can you get an entire system for free?
14:45 – 70sqmm wire crimping
15:36 – Dave’s spidey sense kicks in
16:09 – Trick of the Trade: Bending PVC piping
17:00 – Always trust Dave’s spidey sense
17:17 – Nighttime install!
22:02 – RJ45 termination in the dark
23:18 – First test, something seems wrong…
26:17 – Nest morning troubleshooting
28:52 – It’s always the current clamp
31:19 – Switchboard upgrade with Changeover switch
33:32- Stress testing the Solis backup port
What use is a 1GHz oscilloscope if it doesn’t have a high frequency active probe interface? Well, there are several options including a cheap $5 DIY resistive probe.
Practical demonstration of active FET probing vs Passive Probing vs DIY Resistive probing.
A lot of material extracted from videos 1367 and 1368
Forum: https://www.eevblog.com/forum/blog/eevblog-1718-is-a-cheap-1ghz-oscilloscope-useless-($5-diy-1ghz-resistive-prob/
00:00 – What use is a cheap 1GHz oscilloscope if it doesn’t have an active probe interface?
02:30 – Capacitive reactance and tip capacitance
03:55 – High bandwidth passive probes
04:59 – Active FET probes to the rescue, right?
07:54 – DIY $5 1GHz Resistive probe
09:02 – DIY resistive probe explained
13:33 – Active FET probe example: Poor Grounding vs Good Grounding
19:02 – $5 DIY Resistive probe vs $3k Active FET probe
19:48 – What’s going on here? The downside of resistive probes.
21:10 – Resistive probes are more tolerant of grounding
25:08 – Conclusion
Rigol have released the new MHO900 series mixed signal oscilloscope. For $999 entry level MHO934 you get 4CH 350MHz 12 bit at 4Gs/s, this is insane!
Teardown of the special edition 1GHz MHO98 (still only $1399!)
https://www.rigol.com/intl/products/oscilloscope/MHO900.html
https://www.rigolna.com/products/digital-oscilloscopes/mho900/
In Australia: https://emona.com.au/quick-links/rigol/
00:00 – Special Limited Edition MHO98
01:07 – DHO900 vs MHO900
03:06 – Is there another 350MHz scope for $999?
04:48 – Teardown
07:15 – Dual 100MHz AWG PCB
08:23 – 1GHz front end
09:44 – Custom ASIC ADC
13:02 – Impressive assembly minimisation
14:07 – Back the main PCB
16:35 – Why the front end shields are not soldered is kinda smart
17:50 – What has Dave screwed up?
19:57 – Dumb arse Dave does it again
20:42 – Bootup
22:21 – Power consumption measurement
22:39 – Front end PCB analysis
26:04 – The acquisition ASIC is not what it seems…
27:31 – Can anyone else touch this price touch? Analysis of other brands.
33:28 – Web interface and basic bandwidth checks
37:17 – Trigger jitter issue with multiple channels?
39:42 – Conclusion
Forum: https://www.eevblog.com/forum/testgear/rigol-mho98-and-mho900-oscilloscope-series/
A viewer went dumpster diving at the University of Technology and found some classics.
Teardown and playing with a Kikusui DSS5040 Analog/Digital Storage scope.
Plus a classic Australian BWD 603B Mini-Lab
Manual: https://www.eevblog.com/files/Kikusui_DSS5040_E.pdf
00:00 – University Dumpster diving time!
02:46 – Kikusui DSS5040 Analog/Digital storage oscilloscope
07:12 – Teardown
10:51 – Power On
17:14 – Digital Storage Mode
21:24 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1716-university-dumpster-diving-kikusui-oscilloscope/
Swiss company Euler Precision have a new 3GHz active probe on Crowd Supply, let’s take a look.
https://www.crowdsupply.com/euler-precision/esap-30
00:00 – The Euler Precision eSAP-30 Active Probe
01:26 – The problem with passive probes, Capacitance Reactance
03:31 – Unboxing
05:55 – Open Source?
06:46 – It’s all about the probe accessories
08:08 – Measurement report
10:02 – Real world measurement using Keysight reference probe
11:57 – Testing the Euler probe with a flat flex probe interface
13:13 – Let’s probe it even better…
15:55 – Noise comparison test
16:09 – Teardown
19:26 – 700MHz passive probe comparison
20:48 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1715-euler-precision-esap-30-3ghz-active-probe-review/
A look at the crazy ferrite core density in the Ampex 1600 16k x 18 bit word magnetic core memory from Ampex Memory Products Division, used in the Mitra 125S computer for the Spacelab program on the Space Shuttle.
00:00 – Magnetic core memory
01:52 – How magnetic core memory works
07:12 – Ampex high density 16Kword core memory
Magnetic core simulator: https://nationalmaglab.org/magnet-academy/watch-play/interactive-tutorials/magnetic-core-memory/#:~:text=Magnetic%20core%20memory%20was%20developed,electric%20current%20in%20a%20circuit.
Forum: https://www.eevblog.com/forum/blog/eevblog-1713-crazy-density-magnetic-core-memory!/
A tour inside the brand new CSIRO Mobile Mission Control & Operations Centre, built inside a b-double truck. Dr Mark Dunn gives us a tour of the new fitout.
https://research.csiro.au/moc/
Purpose-built, the b-double trailer deploys into a fully operational mission control centre that can accommodate up to 30 mission operators, each supported by configurable multi-monitor stations and mission-status displays. Onboard, satellite, 4G, integrated radio and vibration-tolerant servers ensure connectivity, even in remote locations. The mobile Mission Operations Centre is powered by a battery-backed solar system with generator fallback, enabling sustainable, off-grid operation across Australia’s geographically dispersed launch sites.
Forum: https://www.eevblog.com/forum/blog/eevblog-1712-csiro-mobile-space-mission-control-centre/
YouTube have just released new AI video Shorts features built into the Youtube app itself. Let’s create an AI slop Short in minutes using Veo 3 and see what fresh new hell you’re in for on Youtube.
If you thought AI slop was already bad enough on Youtube, it’s just leveled up.
https://aardvark.co.nz/daily/2025/0918.shtml
Forum: https://www.eevblog.com/forum/blog/eevblab-133-youtube-just-self-destructed-(ai-shorts)/
A walkaround of the show floor of the International Astronautical Congress IAC 2025 in Sydney
Forum: https://www.eevblog.com/forum/blog/eevblog-1711-international-astronautical-congress-iac-2025-walkaround/
More mailbag!
00:00 – Tennismatic saw my repair video!
03:23 – Stickers
04:34 – Offerman Industries DC-DC Boost Converter
Datasheet: https://www.omnionpower.com/assets/pdfs/windchill/data-sheet/abxs001_ds.pdf
https://offerman.industries/products/32-54v-adjustable-output-dc-dc-step-up-boost-converter-8-16v-wide-input-65w-output
05:59 – Bypass Capacitors in Parallel?
07:51 – Sexy clear solder mask
11:25 – Load Testing
https://www.covingtoninnovations.com/
https://juniorgeniuskits.com/
16:35 – Book: Electronic Experiments for Young Learners
21:52 – All Hail Wago Connectors
22:05 – Breadboard Bonanza!
26:42 – Junior Genius Electronic Learning Breadboad Kit
https://juniorgeniuskits.com/
Forum: https://www.eevblog.com/forum/blog/eevblog-1710-mailbag-tennismatic-breadboards-books-boost-converters/
Was supposed to be a regular mailbag with multiple items, but this Haasoscope Pro was a 1.5hrs of raw footage adventure I have edited down to 45min, warts and all. So no other items, just this.
TLDR; This open source 2GHz 3.2GS/s USB Oscilloscope needs a lot of work…
This is not a full review, it’s Mailbag, and is basically me documenting trying to sort out all sorts of issues.
Github: https://github.com/drandyhaas/HaasoscopePro
https://www.crowdsupply.com/andy-haas/haasoscope-pro
Forum: https://www.eevblog.com/forum/oshw/haasoscopepro-affordable-open-source-open-hardware-2-ghz-oscilloscope!/
Another viewer question, can we identify this SMD component?
https://x.com/Joostnietsmeer/status/1967941676061823401
Forum: https://www.eevblog.com/forum/blog/eevblog-1708-whats-this-smd-part/
Dave’s Goal Zero Yeti 400 lithium ion battery failed. Repair time.
Forum: https://www.eevblog.com/forum/blog/eevblog-1707-repair-goal-zero-yeti-400-lithium-battery/
00:00 – Goal Zero Yeti 400 Battery failure
01:32 – Hiccuping
03:28 – Teardown
04:47 – Failure hypothesis and potential solution
05:37 – The mains inverter PCB
06:43 – The control PCB
07:36 – Dual battery connectors
08:09 – Measuring the dual battery connections to make sure they are in parallel.
08:58 – The lithium ion battery pack
09:24 – Measuring the battery pack voltage, and the under voltage lookout protection
10:49 – Re-powering just the controller board
11:38 – Progressive system module power up with the battery, isolating the mains inverter
12:23 – Measuring the battery again to see if it’s accepting a charge
13:20 – Winner Winner Chicken Dinner
15:34 – No electronics repair needed
15:54 – Goal Zero battery physical design
17:03 – Back from the gym, what’s happened?
18:33 – Fault summary
Is a wrist worn multimeter actually useful? A review of the CZDANG K8
https://s.click.aliexpress.com/e/_opDFvin
Use coupon code “doesntsuck” for 10% off the EEVblog 1980s pocket multimeter
EEVblog 1980s Pocket Multimeter
Forum: https://www.eevblog.com/forum/blog/eevblog-1706-k8-wrist-worn-multimeter-review/
The world’s first desktop personal computer wasn’t the Apple 1 or the Altair 8800. It wasn’t even the HP 9100A, it was the Olivetti Programma 101 from 1965! Computer Teardowns don’t get much more vintage than this.
Forum: https://www.eevblog.com/forum/blog/eevblog-1705-the-worlds-first-desktop-computer-teardown/
Links:
http://www.oldcomputers.arcula.co.uk/calc3.htm
https://bellini.it/portfolio-articoli/mario-bellini-designer/
http://www.curtamania.com/curta/database/brand/olivetti/olivetti%20programma%20101/index.html
https://ub.fnwi.uva.nl/computermuseum/delayline.html
https://ub.fnwi.uva.nl/computermuseum/p101dl.html
https://avvocatostella.com/wp-content/uploads/2015/12/Il-primo-personalcomputer-lOlivetti-La-Programma-101.pdf
https://www.oldcalculatormuseum.com/c-programma101.html
https://www.fondazioneadrianolivetti.it/en/p101-cecam/
https://www.inexhibit.com/case-studies/olivetti-programma-101-at-the-origins-of-the-personal-computer/
https://forum.vcfed.org/index.php?threads/olivetti-programma-101-documentations-and-experiences.1239428/
https://handwiki.org/wiki/Engineering:Programma_101
Service manual: https://vintagecomputer.ca/files/Olivetti/Programma%20101/repair/RepairManualP101.pdf
Reference Manual: http://www.curtamania.com/curta/database/brand/olivetti/Olivetti%20Programma%20101/more/General%20Reference%20Manual.pdf
In Operation: https://www.youtube.com/watch?v=fcaNhfOKjIE
TV Commercial from 1966: https://www.youtube.com/watch?v=WnItIQSwfSw
Memory of Future with the designers: https://www.youtube.com/watch?v=lpkqdbz1R_s
00:00 – What was the world’s first desktop personal computer?
00:37 – The Olivetti Programma 101
01:11 – Original 1966 TV commercial for the Programma 101
05:47 – History of the Olivetti Programma 101
07:15 – Let’s have a look
11:00 – The teardown begins
11:58 – Italian design wankery from Mario Bellini
14:51 – DTL Logic modules, none of that TTL rubbish
16:52 – Removing the front panel
19:40 – The electro-mechnical goodness
21:21 – The cooling system
22:21 – The capacitor has come-a-gutsa
22:38 – The Analog Acoustic Delay Line
24:36 – Serial number
25:22 – The logic cards and the vertical construction
28:09 – Flipping out the mechanical keyboard assembly
31:17 – Conclusion
WTF is this design? The ANENG 626 Smart Multimeter
Forum: https://www.eevblog.com/forum/testgear/aneng-626-multimeter-hell/
00:00 – ANENG 626 Unboxing
02:14 – Charging + USB isolation test. CAT III 600V LOL
03:32 – Power on and UI
05:20 – UI Design Hell + Chocolate Wheel mode. Every child wins a prize!
06:26 – Continuity mode
07:13 – Screen angle dead spots
08:08 – Capacitance
08:25 – But Dave, what’s the problem?
09:28 – I haven’t seen a dial this bad since Dial of Destiny
09:56 – Who is the target market for this?
10:45 – High voltage AC test
11:39 – Silly Bugger + Out of Spec
12:08 – Teardown
15:11 – Dodgy USB charging
16:07 – Battery measurements
16:57 – A look at the new CrownRich chipset and data sheet
19:14 – Schematic
21:20 – Promo and marketing video + conclusion
A repair of this Tennismatic T1000 remote control was way more interesting than I expected.
https://tennismatic.com/main/page_products_ball_machines_t100_series.html
Forum: https://www.eevblog.com/forum/blog/eevblog-1702-a-most-interesting-repair/
00:00 – Tennismatic 1000 Tennis ball machine remote control
00:53 – Battery snap ohms measurement
01:17 – Battery current measurement
02:29 – It’s a row/column thing
02:57 – Teardown
05:20 – Membrane inspection
06:44 – Membrane keypad continuity test
07:25 – Pro Tip: Using multimeter as a shorting lead. Testing the microcontroller.
09:27 – Is it the membrane connector?
10:17 – What would take out the entire keypad?
12:10 – Closer inspection of the contacts
12:44 – Ah Ha! What’s this?
13:48 – Inspecting and testing the row membrane connections
15:01 – Conductive silver ink time
16:41 – The culprit identified
18:48 – Let’s try some fresh conductive silver paint
21:36 – DAMN IT! Dave goofs.
22:56 – How conductive silver ink/paint works
24:01 – Measurements after curing
26:01 – Winner Winner Chicken Dinner
The $599 Moku:Go from Liquid Instruments is an Australian designed and manufactured USB/Ethernet/WiFi instrument, with 14 instruments in 1, and a 4 channel power supply.
Oscilloscope, Voltmeter, Logic Analyser, Waveform generator, Frequency Response Analyser, Lock in Amplifier, Laser Lock Box, Spectrum Analyser, PID Controller, Digital Filter, FIR Filter Builder, Data Logger, Pattern Generator.
https://liquidinstruments.com/products/hardware-platforms/mokugo/
00:00 – The Moku:Go from Liquid Instruments
02:56 – Teardown
07:06 – Designed and manufactured in Australia
10:32 – Cooling and heatsinking
12:57 – Detailed look at the power supply
16:00 – The OPA547 high voltage high current opamp
19:36 – The analog front end
22:15 – Optional Extras
24:13 – The software
26:17 – The Oscilloscope
29:43 – Not your traditional oscilloscope interface
31:12 – Where is the mixed signal capability?
32:15 – Why can’t you use multiple instruments as the same time?
33:06 – Export options look good
33:47 – The fan noise isn’t good
34:35 – The waveform generator
38:38 – Tongue action
38:59 – I had to resort to using another oscilloscope, LOL
39:30 – Are you KIDDING ME?
41:24 – Wait, THAT’S how you use two instruments at once?
43:56 – Why are they duplicating code?
44:49 – Spectrum analyser
45:33 – Another way to use two instruments at once?
46:50 – Wait, yet ANOTHER way to use two instruments…
48:33 – Low frequency spectrum analyser
49:10 – Where is the user manual for multi-instrument mode?
51:29 – They might have been thinking too hard…
52:18 – Frequency Response Analyser
53:20 – The Arbitrary Waveform Generator looks good
54:01 – The Power Supply
56:57 – The value here isn’t in general instrumentation
57:36 – Building a system, a simple digital filter…
1:02:17 – Another hidden way to view waveforms…
1:06:05 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1701-australian-made-mokugo-instrument-review/
Part 1 of the µTimer project, a versatile benchtop lab timer.
Choosing the LCD, and getting two sample LCD’s running. One using a demo board, and one that needed to be hacked onto a Raspberry Pi.
00:00 – Benchtop Lab Timer Project
01:19 – It’s all about the choice of LCD
03:14 – ERC19624-1 192×64 Transflective 4″ LCD
03:44 – Reflective vs Transflective LCD’s
05:01 – ER3806 Font Chip
06:06 – Demo Board
09:10 – LCD Bias Angle and Viewing Angle Explained
11:45 – What is THAT? LCD Bleeding?
13:19 – Power consumption measurement
15:48 – Trying another LCD, the ERC19624-6. What difference does a dash number make?
17:15 – Bodging on the LCD connector to the breakout board
20:34 – The pin offsets and lack of routing is annoying…
22:10 – Reprogramming the 8051 demo board, it should be easy, right?
26:32 – Entering The Matrix
29:40 – More soldering
30:33 – The Programmer Software doesn’t work without a HEX file…
32:17 – All of that for nothing…
33:40 – Let’s try this Arduino / Raspberry Pi ST7525 LCD code
35:36 – Getting the Raspberry Pi running and installing the BCM2835 C library
38:56 – Getting the Make to work on the source code.
40:01 – Make Clean should work…
41:16 – Winner Winner Chicken Dinner
41:10 – Power consumption measurement. This one is supposed to be much lower…
42:58 – Changing the LCD contrast in software
45:10 – Is it better or worse than the first LCD?
46:37 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1699-utimer-project/
Links:
https://www.buydisplay.com/4-inch-low-cost-white-192×64-graphic-cog-lcd-display-st7525-spi
https://www.buydisplay.com/4-inch-cog-192×64-display-graphic-lcds-module-ist3020-black-on-white
http://www.airspayce.com/mikem/bcm2835/
Font Chip: https://www.buydisplay.com/download/manual/ER3806-1_Datasheet.pdf
Custom LCD videos: https://www.youtube.com/playlist?list=PLvOlSehNtuHvmK-VGcZ33ZuATmcNB8tvH
The annoying beep FOUND: https://www.youtube.com/watch?v=tkRwHWMf0Gk
I scored this GW Instek APS-7050 Precision AC Power Source on Ebay, let’s check it out.
Forum: https://www.eevblog.com/forum/blog/eevblog-1698-awesome-ebay-ac-power-source-gw-instek-aps-7050/
Why does this Uni-T UDP6731 PSU use different brand LM358 opamps on the same PCB?
All about Bill Of Materials, SMD pick and place machines, suppliers and specifications.
Links:
Jellybean Opamps: https://www.youtube.com/watch?v=uq1DMWtjL2U
NESS Factory tour: https://www.youtube.com/watch?v=bTij7Juj5qE
http://www.artschip.com/pdf/LM358.pdf
https://www.st.com/content/ccc/resource/technical/document/datasheet/61/46/87/01/98/ed/44/c5/CD00000464.pdf/files/CD00000464.pdf/jcr:content/translations/en.CD00000464.pdf
Forum: https://www.eevblog.com/forum/blog/eevblog-1697-whats-up-with-different-brand-op-amps/
A short tutorial on the maximum efficiency and power you can get from a wind generator. Also applies to water turbine generators.
Also deriving the industry standard wind power formula from first principles: Power (W) = 1/2 x ρ x A x v^3
Don’t let any wind power marketing scams fool you, you canna’ beat the laws of physics Captain, or Betz’s Law.
Forum: https://www.eevblog.com/forum/blog/eevblog-1696-tutorial-wind-power-101/
More mailbag!
00:00 – Nifty USB Knob from Tiny Little Gadgets
https://www.etsy.com/uk/shop/TinyLittleGadgets
03:38 – Reference Circuit PCB books
https://www.boltind.com/product-category/reference-circuits-books/
09:57 – Robin RCD/ELCB Tester
20:57 – Geekom IT12 i7 Mini PC
Forum: https://www.eevblog.com/forum/blog/eevblog-1695-mailbag-robin-rcd-tester-pcb-book-usb-knob-geekom-it12-mini-p/
A teardown and design discussion of the Scarlett Rae heater for females, with the designer Scott Williams from Xentronics.
Recorded at the Electronex exhibition in Melbourne
https://scarletperiod.com/products/rae
https://xentronics.com.au/
The Amp Hour discussion on design consulting: https://theamphour.com/624-design-manufacturing-consulting-with-scott-williams-from-xentronics/
Forum: https://www.eevblog.com/forum/blog/eevblog-1694-scarlet-rae-teardown-and-design-discussion-with-xentronics/
It looks like Youtube are finally going to do something about the AI slop channels that are plaguing Youtube? It’s called YOUtube for a reason. If you want AI info slop, go to INFOtube.
Forum: https://www.eevblog.com/forum/blog/eevblab-130-youtube-are-finally-demonetising-ai-channels/
A teardown of the Uni-T UTE 310 Digital Power Meter, and an example meausing the power consumption of the new Brymen BM786BT multimeter in bluetooth data transmission mode.
https://uni-trendus.com/products/ute310-digital-power-meter
Forum: https://www.eevblog.com/forum/blog/eevblog-1693-uni-t-ute310-power-meter-teardown-practical-demo/
00:00 – Uni-T UTE310 Power Meter
02:44 – Teardown
06:54 – Power supply
07:47 – FPGA and ARM processors (plural)
09:23- Seperate isolated volatge and current measurements
11:28 – Special Snowflake shunt resistor
14:04 – Turn on and a looks at the current ranges
15:04 – Flashing LEDs
15:51 – Shunt resistor heatsink sizing
16:46 – Inside the metal cans. ADC’s + Amplifiers. Talking head Dave, PCB walkthrough
27:05 – Power on, offset error, and the tyranny of ranging
30:19 – Demonstration with BM786BT multimeter battery consumption
34:51 – Current waveform view
39:11 – The offset has drifted
40:43 – Conclusion
Is a US$130 Fluke multimeter any good? A review of the Fluke 17B MAX Multimeter
Forum: https://www.eevblog.com/forum/blog/eevblog-1692-$130-fluke-17b-max-multimeter-review/
Why are Fluke meters so expensive: https://www.youtube.com/watch?v=ay9wFQAW19Y
Fluke 17B multimeter teardown: https://www.youtube.com/watch?v=TbEtcpM0RGc
Fluke vs Brymen Teardown: https://www.youtube.com/watch?v=3Hlmq57FQQk
00:00 – US$130 Fluke 17B MAX Multimeter
02:32 – Construction
04:52 – What’s in the (China Only) box?
06:14 – New TL31 probes for electronics use
07:03 – Teardown
11:32 – Input Alert Jacks
13:22 – Bottom of PCB
14:54 – Really glossy solder mask
16:35 – Data port?
17:13 – Pro Tip: Replacing self tapping screws
18:10 – Power On and that BIG display!
19:11 – Backlight. Dim but nice.
19:43 – Continuity tester
20:59 – The Range Switch has changed
21:32 – No TouchHold
22:46 – The capacitance range accuracy FAILED
23:37 – Accuracy tests
24:48 – High Voltage Overload testing
26:18 – 240V Mains up the clacker
26:52 – Ohms accuracy testing
27:33 – Drop Testing
27:58 – Current accuracy testing
29:09- LED testing kinda sucks, and more capacitor testing
29:39 – Capacitor testing SUCKS
31:44- Battery Life measurements
33:40 – Conclusion
The Uni-T UDP6700 series UDP6731 360W slimline Bench Lab Power Supply REVIEWED
https://instruments.uni-trend.com/products/dc-power-supplies/UDP6700
https://uni-trendus.com/products/udp6731-360w-basic-dc-switching-power-supply-80v-15a
00:00 – Uni-T UDP6731 PSU
01:30 – Beware of thermal stacking
02:55 – Teardown
07:35 – Sneaky fan
11:24 – Remember the Riden RD6006, also 350W
13:10 – Power up
16:04 – The display and UI
18:14 – Instantaneous knob
19:16 – Only 600 memory settings, meh.
20:10 – No ability to disable voltage sense, and some oddities.
23:22 – Accuracy spec
26:13 – What fan noise?
27:45 – Have I KILLED it?
28:46 – WTF is going on here?! Rigol or Uni-T problem?
32:05 – Did my Rigol Electronic Load survive?
33:03 – The Uni-T survivied a brutal oscillation test
33:47 – Ripple & Noise
35:36 – 2ohm load waveform
36:41 – Switch on and other waveform tests
40:31 – Remote software
44:00 – Lister mode tested
47:39 – Woah, this is a problem!
49:46 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1691-uni-t-udp6731-360w-bench-psu-review/
Hires photos:
More Mailbag!
00:00 – Zifnu K-16 Kickstarter LED light
https://www.zifnu.com/
11:02 – Qoool Sensing: Diamond Quantum Fluorescence Demo
https://qoool-sensing.org
16:41 – Logic Gate Educational Demo Board
https://logicgat.es/
20:15 – Beelink ME Mini 6 x M.2 Slot Home Storage NAS
https://www.bee-link.com/products/beelink-me-mini-n150?ref=OKJKQ
Forum: https://www.eevblog.com/forum/blog/eevblog-1690-mailbag-zifnu-led-quantum-diamonds-logic-gates-m-2-nas/
Another Colour A3 photocopier in the dumpster! Is this an upgrade?
Fuji-Xerox Docucentre V C4476
Forum: https://www.eevblog.com/forum/blog/eevblog-1689-another-dumpster-diving-a3-colour-photocopier/
DC Constant Current sources explained and demonstrated.
Forum: https://www.eevblog.com/forum/blog/eevblog-1688-constant-current-sources-explained-demo/
Voltage and Current Source Theory: https://www.youtube.com/watch?v=AQK7RyecVW0
DC Circuit Fundamentals Playist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtVLq2MDPIz82BWMIZcuwhK
00:00 – Constant Current Sources
11:08 – Practical uses of constant current sources
14:00 – Circuit examples
19:13 – TL431 Example
20:25 – LM317 CC circuit
21:42 – Low Side Source vs High Side Current Sink
24:19 – Bench examples
26:24 – Your PSU is a CC generator!
28:04 – Keithley 225 Constant Current Source
31:09 – LED strip example of Compliance Voltage
The repair of alkaline battery leakage in this Keysight U1177A Bluetooth mulitmeter adapter was, well, pointless….
Forum: https://www.eevblog.com/forum/blog/eevblog-1687-a-pointless-alkaline-battery-leakage-repair-462018/
A complete walkaround of the Electronex 2025 exhibition in Melbourne
Forum: https://www.eevblog.com/forum/blog/eevblog-1686-electronex-2025-melbourne-walkaround/
A walk around the Australian Manufacturing Week exhibition in Melbourne 2025, looking at mechanical stuff Dave has no idea about.
Forum: https://www.eevblog.com/forum/blog/eevblog-1685-australian-manufacturing-week-2025-walkaround/
Test Controller is an awesome free logging and control software that supports a ton of multimeters, power supplies and loads, including the new BM2257.
https://lygte-info.dk/project/TestControllerIntro%20UK.html
https://lygte-info.dk
Forum: https://www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/
Sun-Ways actually went ahead and installed Solar Freakin’ RAILways in the Swiss village of Buttes at the cost of US$700,000 !
References:
https://www.swissinfo.ch/eng/climate-change/switzerland-turns-train-tracks-into-solar-power-plants/89227914
https://www.swissinfo.ch/eng/science/swiss-solar-railway-project-gets-back-on-track/87707181
https://www.startupticker.ch/en/news/sun-ways-opens-world-s-first-rail-ready-track-mounted-solar-power-plant
https://www.youtube.com/@sun-ways
https://www.pv-magazine.com/2024/04/09/italian-startup-testing-pv-sleepers-on-railway-line/
https://pvwatts.nrel.gov/pvwatts.php
Paper on railway dust:
https://www.sciencedirect.com/science/article/pii/S004896971401451X?via%3Dihub
https://pubmed.ncbi.nlm.nih.gov/25461038/
Forum: https://www.eevblog.com/forum/blog/eevblog-1683-sun-ways-solar-freakin-railways-part-2/
Part 1: https://www.youtube.com/watch?v=7vItnxhWRqw
One of my 14 Enphase microinverters failed and they sent me a new one under warranty, lets install it…
Forum: https://www.eevblog.com/forum/blog/eevblog-1682-enphase-microinverter-fail-warranty-install/
More mailbag!
00:00 – A really really nice DIY Constant Current Load
07:55 – Whatever happened to sloped folded metal instrument cases?
08:46 – The amazing Stamp Breadboard Replacement prototype boards (Link coming soon)
13:35 – A look at the Stamp documentation
21:14 – Ian Scott Johnston’s Multimeter Continuity Speed Tester!
https://www.youtube.com/@UCtiK8QrcCrsjDXpKzB1PO1A
https://www.ianjohnston.com/
Forum: https://www.eevblog.com/forum/blog/eevblog-1681-mailbag-nice-diy-cc-load-amazing-proto-boards-ian-johnston/
New research shows you can extract a tiny voltage and current from a stationary tube in the earth’s magnetic field. Is this real? It is scaleable to be useful?
Paper: https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.7.013285
IEEE article: https://spectrum.ieee.org/decarbonized-future
Forum: https://www.eevblog.com/forum/blog/eevblog-1680-free-energy-from-the-earths-magnetic-field/
Why does the Uni-T UTG9504T abitary function generator cost US$5800?
A teardown and detailed BOM cost analysis of how much high end product designs costs, and the margins involved.
Forum: https://www.eevblog.com/forum/blog/eevblog-1679-why-does-this-uni-t-awg-cost-$5800-bom-cost-analysis-458562/
00:00 – Why does this Arbitrary Waveform Generator cost US$5800 ?
02:17 – 2.5x BOM Cost multiplier
03:02 – Teardown
06:02 – Power Supply
08:32 – Output stage design. What’s with the shielding?
13:40 – That’s some serious LC filtering
14:54 – The BIg Daddy FPGA
17:28 – BOM cost analysis spreadsheet
22:12 – The 2.5GS/s 14bit DAC is from WHO?
24:10 – The other DAC, to save some cost
25:43 – The drivers cost more than the DAC?
28:49 – Output stage cost on it’s own?
29:59 – Metal work cost?
30:44 – Case plastics cost?
31:15 – LCD cost?
31:37 – Testing and calibration
31:50 – PCB Assembly cost?
33:12 – Non-Recuring Enginering NRE cost and Amortisation
35:14 – Test jigs
35:47 – Total BOM cost is…
37:10 – Dealer margins
53 minutes single take randomly walking the streets of Sydney with Mehdi from ElectroBOOM. That is all.
Forum: https://www.eevblog.com/forum/blog/electroboom-stalks-sydney/
Oscilloscope have a pre-arm trigger period that can cause confusion if you aren’t aware of it. And how different scopes operate and indicate this in different ways.
Also some potential bugs in the Keysight 3000 and HD3 series scopes.
00:00 – Slow timebases can be problematic for triggering
02:13 – What happens when you press the Single button? Pre-arm / pre-trigger sampling.
03:02 – Keysight 3000T, where’s Wally? Where is the Ready indicator?
03:45 – Keysight 3000T why can I trigger without the Armed/Ready indicator?
06:05 – Schrodinger’s Armed Indicator
07:39 – Beware of pre-arm/ pre-trigger time on slow timebases
08:23 – Keysight HD3, if the Megazoom V any different?
10:47 – Keysight HD3 missed trigger bug?
12:59 – Keysight 3000T 20sec pre-arm delay bug?
13:47 – Siglent SDS1204X HD
15:24 – Rohde & Schwarz MXO4
16:47 – Rigol DHO814
18:52 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1678-beware-of-this-oscilloscope-triggering-issue/
An experiment to test an interesting effect with fuses.
Forum: https://www.eevblog.com/forum/blog/eevblog-1677-an-interesting-effect-with-fuses-(experiment)/
Modifying a lab timer to automatically trigger when a fuses blows, for automated fuse testing.
Fuses video: https://www.youtube.com/watch?v=WG11rVcMOnY
Jellybean Transistors: https://www.youtube.com/watch?v=XYdmX8w8xwI
Forum: https://www.eevblog.com/forum/blog/eevblog-1676-lab-timer-hack/
Our Ninja blender blade failed. For a warranty replacement they wanted us to DESTROY and DISPOSE OF the old perfectly working base unit before sending a new one. Let’s see about that…
The first ever EEVBlog video with zero commentary, just memes.
My breakfast smoothie: https://www.youtube.com/shorts/-2mf1mqZVQ0
Forum: https://www.eevblog.com/forum/blog/eevblog-1675-ninja-blender-repair-because-why-(right-to-repair)/
Credits:
“Our Story Begins” Kevin MacLeod (incompetech.com)
“Cloud Dancer ” Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/by/4.0/
A quick follow-up to the JBL Partybox 310 speaker repair and speculation on WHY the fault happened the way it happened. Contains SPOLIERS, so watch Part 1 first!
Forum: https://www.eevblog.com/forum/blog/eevblog-1672-jbl-repair-youll-never-guess-the-fault/
Repair of a JBL Partybox 310 speaker. Follow along as Dave goes down the repair rabbit hole. Try and guess the exact fault before Dave does, it’s a doozy!
00:00 – JBL Partybox 310 Speaker fault symptoms and initial failure speculation
02:57 – Teardown
06:23 – Is it a firmware lockup issue?
07:17 – Checking the power switch
09:13 – Main PCB’s
10:52 – Hello IT, have you tried turning it off and on again
11:46 – PCB microscope inspection
13:39 – Bench testing and, thou shalt test voltages
16:31 – Looking at the keypad PCB again
17:41 – Replicate the fault using an external PSU
22:55 – Schematic, we have Schematic!
24:14 – The power flow block diagram
28:44 – The penny drops
29:45 – Design TIP
32:04 – Without the schematic I’d be chasing a red herring down a rabbit hole
33:10 – Manual Bypass time to get it working!
34:50 – I called it at the start, but assumed incorrectly
36:33 – OK, let’s trace WHERE this fault actually is
37:41 – No, it’s can’t be, surely not…
39:52 – But WHAT caused it?
42:05 – The repair
44:20 – Assembly back together and testing
HP 1740A oscilloscope repair:
Part 1: https://www.youtube.com/watch?v=Cmz8bzUsj7E
Part 2: https://www.youtube.com/watch?v=7ocancoZ02Q
Forum: https://www.eevblog.com/forum/blog/eevblog-1672-jbl-repair-youll-never-guess-the-fault/
How can the same sh!t happen to the same guy twice? And a trap for young players with LCD’s.
And a giveaway for the young whippersnapper in Australia.
Forum: https://www.eevblog.com/forum/blog/eevblog-1670-bm786-multimeter-battery-leakage-repair-giveaway/
00:00 – How can the same sh!t happen to the same guy twice?
06:27 – Zebra strip elastomeric connector
09:40 – It STILL doesn’t work? Trap for young players with LCD’s
17:38 – I don’t hide my mistakes
18:30 – GIVEAWAY
A mailbag replacement custom LED display for the Agilent U53131A VFD display frequency counter.
www.hubequip.net
Forum: https://www.eevblog.com/forum/blog/eevblog-1669-agilent-u53131a-vfd-to-led-display-upgrade-mailbag/
Horrific alkaline battery leakage in a rare prototype EEVblog 555 Multimeter.
Can it be repaired?
Forum: https://www.eevblog.com/forum/blog/eevblog-1668-horrific-alkaline-battery-leakage-in-rare-prototype-multimeter/
Reverse Engineering the Brymen BM2257 Multimeter front end to understand what changes have been made from the BM235 in the Low Z mode. DaveCAD time. Also some testing of the LowZ mode and how it works.
Forum: https://www.eevblog.com/forum/blog/eevblog-1667-reverse-engineering-the-brymen-bm2257-multimeter/
MOV datasheet: https://www.cnr.com.tw/cloudSpace/CNR_D.pdf
How to reverse engineer: https://www.youtube.com/watch?v=lJVrTV_BeGg
Multimeter Input Protection: https://www.youtube.com/watch?v=zUhnGp5vh60
Let’s find out what this blown SMD part is, sent in by a viewer.
Forum: https://www.eevblog.com/forum/blog/eevblog-1666-blown-smd-component-identification/
Component Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtdQF-m5UFZ5GEjABadI3kI
Part 2 of the Keithley 2302 battery simulator repair of the VFD display.
Just a follow-up on testing the actual VFD display itself to see if there is any fault that’s not the VFD vacuum.
00:00 – Having another look at the failed Newhaven VFD dispaly module
05:37 – Measurign voltages
07:32 – Oscilloscope probing
08:33 – HELLO capacitor! But not the one I expected.
12:25 – To the SMD cap replacement kit
13:11 – Rail measurements again
14:38 – Big ripple improvement, but lets qild the lilly.
15:53 – Bugger! Ok, let’s try the belt’n’braces approach.
17:21 – Winner Winner Extra Chicken Dinner!
Forum: https://www.eevblog.com/forum/blog/eevblog-1664-repair-with-junk-bin-parts!-keithley-2302/
How VFD Displays Work: https://www.youtube.com/watch?v=gZIRPJt69sM
Hacking a VFD Display: https://www.youtube.com/watch?v=clUVEyi_YNM
Repair of a Keithley 2302 battery simulator with junk bin parts. But it did put up a fight!
Teardown video: https://www.youtube.com/watch?v=5LK8wduZsy0
Forum: https://www.eevblog.com/forum/blog/eevblog-1664-repair-with-junk-bin-parts!-keithley-2302/
00:00 – Faulty VFD display in a Keithley 2302 Battery Simulator
01:22 – Teardown
03:14 – The Display driver PCB
04:30 – Solder Sucking Sucks
05:26 – The VFD display module, a Newhaven Display VFM162SDAR8
06:50 – Probing Pro Tip
07:28 – Probing the VFD signals on the oscilloscope
09:42 – Searching for a replacement 16×2 VFD display
15:03 – Potential replacement LCD
16:38 – Identical replacement found
17:44 – Lets check the junk bin…
18:33 – Pinout trap for young players
19:25 – First test FAIL, but hold on a second, lets try something…
21:09 – Winner Winner Chicken Dinner
22:12 – WOAH, now it’s not working?
24:09 – Lets try THIS…
Repairing a customers Brymen BM786 multimeter, and investigating the cause of the InEr error message on the input jack alert feature.
Plus a giveaway to a local youngster.
00:00 – A returned BM786 Multimeter with InEr error message
03:23 – Split jacks and input alert circuit
05:19 – In-Circuit probing TIP and Low Ohms mode.
07:19 – A clue?
08:05 – A need a new desoldering gun. Removing the input jacks
10:30 – Bodge testing of the input detection threshold
12:38 – Not one but TWO failed Megger Insulation meters!
13:50 – Megger testing the connectors at 500V
15:19 – Testing a 2nd failed InEr error meter
17:00 – Cleaning the input jacks
19:11 – Heating up the input jacks
20:18 – Getting desperate, removing the input jacks
21:49 – Getting really desparate, removing the input resistors
22:38 – Reassembling the original repaired unit
24:26 – Repaired BM786 GIVEAWAY
Keysight OLED meter repair: https://www.youtube.com/watch?v=CKdeqqo2diI
Forum: https://www.eevblog.com/forum/blog/eevblog-1663-bm786-multimeter-repair-iner-error-investigation/
This was going to be a repair of a vintage Tandy 200 Portable Computer…
Forum: https://www.eevblog.com/forum/blog/eevblog-1662-vintage-tandy-200-portable-computer-claytons-repairteardown/
00:00 – I sear this Tandy 200 had a problem…
02:54 – Teardown
03:57 – The new BM2257 Multimeter
05:25 – I think it’s the buzzer
08:06 – Microscope teardown
16:20 – They don’t make service manuals like they used to
25:57 – Try to reproduce the fault
The difference between Time Domain and Frequency Domain in AC circuit analysis.
AC Theory Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHvD6M_7WeN071OVsZFE0_q-
Forum: https://www.eevblog.com/forum/blog/eevblog-1661-ac-basics-tutorial-part-5-time-domain-vs-frequency-domain/
Part 4 in the AC basics tutorial series. AC applied to resistors, capacitors and inductors, along with Capacitive Reactance and Inductive reactance.
AC Theory Playlist
Review of the new Quick 861 Pro hot air station compared to the original 861DW.
Forum: https://www.eevblog.com/forum/blog/eevblog-1659-quick-861-pro-hot-air-station-review/
It’s important to understand the difference between Mean and Median, not just for engineering, but for everyday life, so you don’t get manipulated by people with bad intentions.
UBS Global Wealth Report:
https://www.ubs.com/content/dam/assets/wm/global/insights/doc/global-wealth-report.pdf
Forum: https://www.eevblog.com/forum/blog/eevblog-1658-tutorial-mean-vs-median/
Almost 30 minutes of tearing down a Samsung 75″ QLED One Connect dumpster TV and trying to power it up to see if it’s busted or not. QA75Q7FNA
00:00 Dumpster Samsung QLED 75″
04:46 – Teardown wasn’t easy as expected…
08:11 – What is this cable retention BS?
11:26 – I’m still at it…
14:22 – Where’s Wally? Follow the voltage.
17:26 – Where do I get 350V DC at a few hundred watts?
21:21 – DIY 350V DC power supply
22:52 – 350V DC right up the clacker
24:19 – I need MORE voltage
Forum: https://www.eevblog.com/forum/blog/eevblog-1657-dumpster-samsung-75-inch-qled-one-connect-tv/
Elecami Wolf videos:
https://www.youtube.com/watch?v=NF-MVDc1K9Y
https://www.youtube.com/watch?v=w_39JC2Dkdc
Trolley Riding videos:
https://www.youtube.com/watch?v=g3A1XNfDxe0
https://www.youtube.com/watch?v=MC_xeEKd5t4
https://www.youtube.com/watch?v=H9erf8rt54s
More Mailbag!
00:00 – DPS Ultrathin DIN 5V PSU’s
https://digitalpowersystems.eu/de/standard-produkte/
01:15 – The Knife
06:16 – USB-C Isolator
https://digitalpowersystems.eu/de/schnelle-und-sichere-usb-zu-uart-kommunikation-dank-digitaler-isolierung-und-esd-schutz-fur-ein-und-ausgange/
07:34 – Zubax FluxGrip FG40 Electropermanent Magnet for Drones
https://zubax.com/products/magnets/fluxgrip/fg40
11:55 – Testing the magnet
14:04 – Drone delivered multimeters?
14:53 – Why did someone send this?
15:46 – Wireless Freakin’ Road Charging
https://www.youtube.com/watch?v=sisD61ohzK0
19:37 – Sponge Bonanza
21:21 – Beelink EQ14 Intel Twin Lake N150 Mini PC
Forum: https://www.eevblog.com/forum/blog/eevblog-1656-mailbag-electropermanent-magnet-din-psus-sponge-beelink-eq14/
You can use almost any decent modern multimeter to safely discharge high voltage capacitor banks WITHOUT a LowZ function.
Forum: https://www.eevblog.com/forum/blog/eevblog-1655-multimeter-tip-discharge-capacitors-using-any-meter/
Transistor Zener Clamp video: https://www.youtube.com/watch?v=BGcKjy_UNQ4
A full 3 hour discussion with the legendary Lee Felsenstein, designer of the Osborne 1, SOL computer, VDM-1, Pennywhistle modem, and the inventor of social media. Covering everything from the Berkeley free speech movement, the counterculture movement, his career, through to Obsorne and how he invented social media with Community Memory.
His book: https://www.amazon.com/Me-My-Big-Ideas-Counterculture/dp/B0DJ8T45F1/
https://felsensigns.com/
Forum: https://www.eevblog.com/forum/blog/eevblog-1654-lee-felsenstein-counterculture-the-computer-revolution/
00:00 – Full 3 hour talk with Lee Felsenstein
08:24 – University of California at Berkeley, and the Free Speech Movement.
29:04 – First Junior Engineer job at Ampex
36:20 – The first hackathons with Richard Greenblatt
37:33 – Hackers, Heros of the computer revolution
1:03:36 – Techical career at Ampex
1:12:52 – Atari Computers and Steve Jobs, Nolan Bushnall, and Allan Alcorn
1:15:00 – He tried to pitch social media to Steve Jobs
1:22:15 – Designing the Pennywhistle 103 modem +
1:25:36 – Marty Spergel selling kits
1:31:53 – Steve Wozniak and how the Apple 1 is NOT a personal computer
1:43:42 – Osborne Computers
1:53:22 – Osborne 1 physical design
1:57:57 – Osborne 1 development timeline
2:01:19 – The Osborne Effect wasn’t what killed the company
Revisiting the alkaline battery leakage testing with a 555 circuit from a viewer.
Forum: https://www.eevblog.com/forum/blog/eevblog-1653-alkaline-battery-leakage-testing-2-electric-boogaloo/
Final results of the first leakage testing: https://www.youtube.com/watch?v=BScnU4BT4xk
Why is my lab power switchboard wired like this?
Forum: https://www.eevblog.com/forum/blog/eevblog-1652-why-is-my-lab-switchboard-wired-like-this/
A small contribution to the retro computer community, scanning a rare Tandy 1100FD laptop computer service manual.
https://eevblog.com/files/Tandy1100FD-Service-Manual-Schematics.pdf
https://eevblog.com/files/Tandy1100FD-Service-Manual.pdf
https://eevblog.com/files/Tandy1100FD-Service-Manual-Addendum.pdf
I’m finally upgrading the infamous rats nest home switchboard!
https://insightelectrical.com.au/
Forum: https://www.eevblog.com/forum/blog/eevblog-1651-home-electrical-switchboard-upgrade/
00:00 – A look at the old switchboard
03:29 – Single Phase
04:57 – Surge protection
05:28 – Old school ceramic fuses
06:04 – Inside the infamous Rats Nest!
08:29 – Simon from Insight Electrical
09:09 – Could you still do wiring like this?
10:04 – What’s the plan?
11:12 – A look at the Hager surge protector
https://hager.com/au/products/download/product/asset/file/SURGE_BROCHURE_AUS_LOWRES.PDF
11:42 – Lightning strikes
12:19 – Current clamps and wiring looms
12:55 – Service neutral
13:16 – When did they stop using fuses?
14:14 – Tesla brand DIN housing
15:36 – Why use Hager circuit breakers?
16:16 – Electrician toolbag and multimeter
https://www.kew-ltd.co.jp/en/products/detail/00036/
17:07 – Let’s go!
17:53 – This is easy peasy
18:22 – What’s this outdoor switchboard rubbish?
19:00 – What’s your worst electrical shock?
19:41 – Troubleshooting bad wiring & dodgy brand circuit breakers
21:02 – I now have a Tesla brand switchboard
21:58 – It’s looking good!
23:05 – Busses
24:10 – Asbestos panels?
24:47 – Service neutral and Level 1 vs Level 2 vs Level 3 electrical licenses
25:49 – Future upgrades?
26:46 – Average sized Australian home
27:34 – Wire strippers are for appentices!
27:47 – Made in China vs Made in Germany
28:09 – Why no bus bar for the neutral?
28:49 – How common is 3 phase in homes?
30:27 – Finished panel!
31:44 – A look at the final job next day
Related videos:
Smart Meter Installed: https://www.youtube.com/watch?v=X83SPqsf5kY
EDMI Smart Meter Teardown: https://www.youtube.com/watch?v=dm-yZ1N3xmc
Mains Ripple Injection: https://www.youtube.com/watch?v=Po4b7JhpxKQ
Time lapse video 1: https://www.youtube.com/watch?v=r4RCEMtHvgo
Time lapse video 2: https://www.youtube.com/watch?v=JsOMq35Z6L4
Review of the Sequre HT-140 USB-C Desoldering Tweezers
https://sequremall.com/collections/diy-tools/products/sequre-ht140-2in1-hot-tweezers-soldering-iron-desoldering-repair-tool-for-smd?variant=44204748275900
Forum: https://www.eevblog.com/forum/blog/eevblog-1650-sequre-ht-140-smd-desoldering-tweezers-review/
More mailbag!
00:00 – Everyones favourite segment!
01:00 – The very clever Edge Wedge from Metric Mind – Zero footprint programing header
https://metricmind.com/
05:19 – M5Stack Embedded processor modules
https://shop.m5stack.com/products/m5stack-core2-esp32-iot-development-kit
11:28 – Err, the polarity is BACKWARDS!
12:41 – The M5stack website and UIflow2 GUI software
21:20 – Teardown of the M5stack Core2 module
23:16 – Beelink EQi12 Mini PC
https://amzn.to/40kWbvb
26:46 – Mini PC teardown
33:42 – ZOYI / Zotech ZT-FS1 Handheld Anemometer
https://amzn.to/4e6FtCX
38:02 – ZOYI / Zotech ZT-MD1 LCR Tweezers
https://amzn.to/4frMejI
46:17 – ZT-MD1 Teardown
48:09 – Toughon 20,000mAh USB Battery Bank
https://toughon.com/products/tough-on-65w-20000mah-power-bank-bulit-in-usb-c-cable
Forum: https://www.eevblog.com/forum/blog/eevblog-1649-mailbag-m5stack-beelink-mini-pc-zoyi-lcr-toughon-battery/
USB Battery bank charger capacity explained. When you are comparing battery banks you want to use a measured Output Referred capacity figure, not an Input Referred mAh or Wh figure the manufacturers marketing department gives you.
Forum: https://www.eevblog.com/forum/blog/eevblog-1648-input-vs-output-referred-battery-capacity-explained/
You might have thought the Rouute road based energy system was gone, but like a phoenix it has returned from the grifting ashes as R-2ENERGY!
Sadly, Discount Morgan Freeman has been replaced by discount Joe Average
https://www.r-2e.com/
https://find-and-update.company-information.service.gov.uk/company/11768960
https://www.linkedin.com/company/r-2energy/
Forum: https://www.eevblog.com/forum/blog/eevblog-1647-road-based-energy-again-rouute-vs-r-2energy/
The original video has the full debunk on why this is fundamentally a stupid idea: https://www.youtube.com/watch?v=SGwHRImfE4E
FixHub portable soldering station REVIEW
https://www.ifixit.com/products/fixhub-power-series-portable-soldering-station
Just the iron:
https://www.ifixit.com/products/fixhub-power-series-smart-soldering-iron
Schematic:
https://www.ifixit.com/Document/MeQmLlLKT2LSSKFY/Portable-Power-Station-Electrical-Schematics.pdf
Repair Guide:
https://www.ifixit.com/Device/FixHub_Portable_Power_Station
3D Model:
https://www.printables.com/model/1018125-fixhub-power-series-portable-power-station/
How intercreate designed the FixHub:
https://www.intercreate.io/case-stories/ifixit-soldering-iron-and-smart-hub
00:00 – iFixIt FixHub Portable Soldering Station
01:26 – iFixit Screwdriver set + unboxing
02:41 – The smart iron
03:41 – The Portable Power hub
05:04 – The smart iron in detail
06:51 – Auto setup & motion detection
08:43 – Just the Tip
11:18 – You can buy the smart iron on it’s own
11:49 – The hate screens and buttons on iron handles
12:49 – Designed for repairability – Teardown Time
14:51 – Schematics!
15:16 – Concern about the battery terminal spacing
16:01 – Designed by Intercreate
16:47 – Complete bare PCB
18:01 – Dum Arse Dave got the battery to go sparky-spark
18:59 – It was DEAD out of the box!, repair time!
20:47 – Testing the iron from an external USB-C battery bank
22:06 – Testing the TS-80 tips
22:23 – Power meter water test
23:46 – Same power meter test with the JBC iron
24:53 – Same power meter test with the TS80P iron
25:13 – The temperature display is suspiciously consistant
25:52 – Power up timer and temperature comparison test
27:17 – Power up timer test on solder
28:06 – Basic copper clad ground plane soldering test
29:06 – Large package soldering test
29:40 – Small package soldering test
29:57 – Repetative ground plane solder test
30:28 – JBC reference test on large package
31:06 – Temperature accuracy test
31:46 – External USB device powering featurign the µSupply
32:02 – The magnetic stand
34:04 – Trying the computer connection and command line serial port
35:39 – Back to the water test with external power meter
36:54 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1646-ifixit-fixhub-portable-usb-soldering-station-review/
Follow-up video: https://www.youtube.com/watch?v=5vbg8QEZXfY
Is the US$80 Quick TS11 80W Soldering station any good?
SPOILER: Nope, it’s pretty terrible.
Forum: https://www.eevblog.com/forum/blog/eevblog-1645-$80-quick-ts11-soldering-station-review/
More mailbag!
00:00 – Crowview Monitor & Keyboard
https://www.elecrow.com/crowview-note-all-in-one-portable-monitor-phone-to-laptop-device-with-full-featured-type-c-sbcs-mini-pc-pc-game-console-compatibility.html
08:11 – Casio Border Army Game+Watch
11:34 – Minipa ET-1700 Pocket Multimeter
13:24 – Adafruit PCB Ruler
14:14 – PASS Card Game
15:13 – Crusty Raspberry Pi
17:40 – Sinusoid 4-20mA Rotary Encoder
29:29 – Wurkkos H1 USB Battery Bank
36:05 – Rulerize, transparent ruler sticker
https://www.rulerize.com/
Forum: https://www.eevblog.com/forum/blog/eevblog-1644-mailbag-crowview-monitor-casio-game-4-20ma-encoder-wurkkos-ba/itor-phone-to-laptop-device-with-full-featured-type-c-sbcs-mini-pc-pc-game-console-compatibility.html
You get what you pay for in EV chargers. Don’t buy this super cheap New Energy brand 7kW 32A EVSE Charger.
Does it even meet the IEC 62752 it claims on the label? Or the US UL 2231 standard?
MIDA brand EVSE: https://www.youtube.com/watch?v=SrZgN_EuRGw
Can I resurrect my first digital multimeter? A Soar ME-533
Forum: https://www.eevblog.com/forum/blog/eevblog-1641-can-i-resurrect-my-first-digital-multimeter/
00:00 – My first digital and analog multimeters, Soar ME-533 + Micronta 22-201U
03:20 – Battery terminal corrosion, of course
05:13 – My first pair of pliers and screwdriver
06:11 – Teardown
08:10 – Removing the LCD
10:24 – LCD under the microscope, the magic fluid escaped
15:14 – Conductive LCD traces on glass
Meter was also branded Dick Smith Q-1446 https://www.youtube.com/watch?v=I6C0HnkR7EM
How DC Solar Isolators Work (TEARDOWN)
00:00 – Teardown of Benedict LS25 Solar True DC Isolator Switch
04:29 – How the contacts work
06:02 – How arc chutes and arc barriers work
12:11 – 5000V arc testing
Datasheet: https://www.benedict.at/files/documents/6617533-DC-Switch-Disconnector-D946E.pdf
Forum: https://www.eevblog.com/forum/blog/eevblog-1641-how-dc-solar-isolators-work-(teardown)/
AllPowers R1500 1500W 1150Wh LiFeP04 Battery Review + Teardown
Code: EEVblog10 for 10% off
Forum: https://www.eevblog.com/forum/blog/allpowers-r1500-1500w-1150wh-lifep04-battery-review-teardown/
Teardown photos:
More interesting mailbag!
00:00 – Forest M Mimms Make: Maverick Scientist: My Adventures as an Amateur Scientist
https://amzn.to/4e7fSup
Signed copies: https://www.makershed.com/products/maverick-scientist-hardcover
Engineers Mini Notebook are still available!
https://amzn.to/3zvSkjJ
https://amzn.to/3XLRJnn
https://amzn.to/3XLMHY7
https://amzn.to/4dd9cJQ
In the Lab with Jay Jay: https://www.youtube.com/@InTheLabWithJayJay
03:30 – Unmanaged615
https://www.reddit.com/r/TheAmpHour/
04:40 – Piezo tranducer sensor thing + singing capacitors and hydrophones
08:18 – Simpson panel meter with GORGEOUS Beckman Panaplex display!
13:41 – 10GHz RF tank level sensor, teardown + how it works
Lightbox Engineering https://www.lightboxengineering.com/
20:16 – Tomlov TM 4K AF Max Microscope
https://s.click.aliexpress.com/e/_DDJDCgF
Forum: https://www.eevblog.com/forum/blog/eevblog-1640-mailbag-4k-microscope-panaplex-displays-piezo-singing-rf-magic/
Teardown of the new Keysight InfiniiVision HD3 14bit Megazoom V ASIC oscilloscope
https://www.keysight.com/us/en/products/oscilloscopes/infiniivision-2-4-channel-digital-oscilloscopes/infiniivision-hd3-series-oscilloscopes.html
Forum: https://www.eevblog.com/forum/blog/eevblog-1639-keysight-hd3-oscilloscope-teardown/
After 13 YEARS Keysight have finally released the new MegaZoom V ASIC oscilloscope! Let’s take an initial look at the HD3 / HD300 series released today.
NOTE: I only had this scope for 24 hours from when it arrived to when I released this video, so please excuse the crudity of the video, I didn’t have time to build it to scale or to paint it.
https://www.keysight.com/us/en/support/HD304MSO/infiniivision-oscilloscope-4-analog-channels.html
Forum: https://www.eevblog.com/forum/blog/eevblog-1638-new-keysight-megazoom-v-asic-1ghz-hd3-oscilloscope/
00:00 – NEW Keysight HD304MSO 14bit ADC Oscilloscope with Megazoom V ASIC!
08:19 – Boot up
10:24 – New User Interface
14:12 – A few bugs
15:40 – 100MHz Signal Gen
16:28 – USB & Quick Action
18:13 – Intensity Graded Display DOWNGRADE?
19:30 – Ethernet remote and VNC
21:01 – Screen Scaling?
22:59 – Measurements
23:44 – Coming soon… X-Y & Roll
24:52 – 100uV/DIV ?
25:38 – Measurement on full data or screen?
27:34 – Trigger level range limitation, another coming soom feature
28:02 – Comparison to R&S MXO4, Half the noise, and 14bit vs 12bit
29:57 – Update rate comparison
30:44 – Noise measurement at 1V/DIV
31:17 – Custom ADC speculation
31:55 – BRUTAL Update rate comparison, Megazoom Magic
35:13 – Lack of bandwidth filters, maybe another coming soon option…
36:53 – 16 HD mode vs 18bit HD
37:10 – 14bit ADC TESTED
38:14 – Window docking & Tiling & Full Screen
39:08 – Zone triggering
40:31 – Serial decode
41:43 – NEW FEATURE: Fault Hunter
45:50 – 1GHz Passive Probe!
46:43 – Conclusion
Reflect Orbital wants to put reflecting mirrors in space to sell sunlight to solar farms after dark. The numbers work out exactly as you expect them to. It’s Solar Freakin’ Space Mirror time!
https://www.reflectorbital.com/
BenNBuilds balloon test video: https://www.youtube.com/watch?v=4hUNCtDTIZc
First Principles interview with Ben Nowack: https://www.youtube.com/watch?v=yDV3v0Xb4ow
S3 Interview video with Reflect Orbital: https://www.youtube.com/watch?v=4BcDoDs89rc
S3 2nd interview with Ben Nowack & Tristan Semmelhack : https://www.youtube.com/watch?v=kmC-u-fXueA
Space.com article: https://www.space.com/orbiting-mirror-boost-solar-power-production
ClimateCapital investment: https://www.climatecapital.co/portfolio
Understanding the Duck Curve: https://www.nrel.gov/docs/fy16osti/65023.pdf
Real time US energy price tracker: https://www.iea.org/data-and-statistics/data-tools/real-time-electricity-tracker
Forum: https://www.eevblog.com/forum/blog/eevblog-1537-solar-freakin-space-mirrors-reflect-orbital-debunked/
00:00 – Reflect Orbital, Sunlight After Dark
01:18 – Ben Nowack from BenNBuilds Youtube channel & the balloon test
02:55 – Sun synchronous polar orbit reflecting mirror satellites
03:54 – A look at the website claims, a 5km sunlight spot for 4 minutes
05:58 – This isn’t new, the Russians did it with the Znamya 2, albeit unintentionally
06:56 – Who’s behind Reflect Orbital?
08:12 – What is the Duck Curve?
09:31 – CLAIM: A 10m x 10m satellite mylar reflector into a 12U Cubesat
10:09 – CLAIM: 10’s to 100’s if BILLIONS of dollar per year revenue!
10:35 – CLAIM: $50/MWh energy sale price after dark
11:18 – CLAIM: $175k/year revenue from each satellite & launch costs
11:58 – CLAIM: 200W/sqm? Err, in what universe?
12:24 – DaveCAD calculations
13:10 – 100kW maximum capture is reduced by the tilt angle
14:05 – 5mW/sqm. FIVE MILLIWATTS! Is this a JOKE?
14:50 – But WAIT, what if you combine and focus all the satellites?
16:02 – It gets WORSE! Capacity Factor is a problem.
18:14 – 20MWh/year WOW!, that’s a lot, right? Right?
19:22 – Even 20MWh/year become ZERO if it consumes more than it produces!
20:09 – How did nobody do a back-of-the-envelope calculation?
The ultimate beginners guide to multimeters. What are they, how to choose one, and how to use them to measure electrical things.
EEVblog meters: https://eevblog.store/
Cheap $20 meter AN8008
Fluke 101 for $50
Forum: https://www.eevblog.com/forum/blog/eevblog-1636-ultimate-multimeter-beginners-guide/
00:00 – The Ultimate Beginners Guide to Multimeters
00:35 – Display Counts Explained
01:17 – Range Switch or Push Button?
01:43 – Don’t get a rechargable type or permanent backlight
02:05 – Autoranging vs Manual Ranging
03:05 – Multimeter Probes
03:36 – Rubber Holster vs Overmoulded Rubber
03:50 – Battery powered & Auto Power Off
04:06 – What can a Multimeter Measure? Voltage, Resistance and Current
04:55 – Do you need Current measurement?
05:38 – Capacitance & Continuity
06:39 – Continuity Testing Demonstrated
07:08 – Diode and LED testing
07:59 – Thermocouple Temperature Measurement
08:37 – Non-Contact Electric Field (NCV) Testing
08:57- Frequency, Duty Cycle, and Min/Max/Avg
09:18 – True RMS vs Average Responding
10:13 – Practical usage demonstrated
10:47 – Modern Multimeters are very robust
11:10 – Here is where it gets dangerous, current measurement.
12:55 – CAT Safety rating and fuses
14:23 – UL and ETL Testing Certification
14:43 – BEWARE of Battery LEAKAGE!
15:00 – Don’t measure Ohms in-circuit
15:43 – Auto Touch Hold
16:17 – DC Voltage Measurements
17:35 – AC Voltage Measurement
18:08 – Current measurement demonstrated
19:50 – Capacitance measurements demonstrated
21:20 – Ohms cable measurement
22:07 – Manual ranging demonstrated
23:02 – Bargraph function
23:45 – Conclusion and Recommendations
Installing a 15kWh AERL Life2 LiFePo4 solar home storage battery to my Deye inverter.
Thanks to Peter Watkinson from AERL, one of my long time viewers!
AERL were the first to invent and patent the Maximum Power Point Tracker MPPT used in all modern solar systems.
Analysis video that was cut from this video: https://www.youtube.com/watch?v=gAu8CvMjDrU
Full talk with Peter: https://www.youtube.com/watch?v=eldXifbNm2A
https://www.aerl.com.au/mppt-solar-charge-controller-history/
https://www.aerl.com.au/
AERL Life2 datasheet: https://www.aerl.com.au/wp-content/uploads/2024/05/AERL_LiFe2_Datasheet_REV_004.pdf
Deye manual: https://www.sunovagroup.com.au/wp-content/uploads/2023/12/SUN-3-6K-SG04LP1-AU-1.pdf
Australian Standard for Home Battery Installations: https://store.standards.org.au/product/as-nzs-5139-2019
LG Battery recall: https://www.lgessbattery.com/au/recall/recallnotice.lg
Forum: https://www.eevblog.com/forum/blog/eevblog-1634-15kwh-aerl-lfp-home-storage-battery-install!/
00:00 – AERL Life2 LFP Home storage battery installation
01:08 – Pre-wired 19″ battery storage rack
03:23 – 4AWG cables, quick-connects and bus bar
05:03 – The old EEVblog garage lab!
05:19 – Rate my Home Assistant RPi setup
05:43 – Peter Wilkinson from AERL
06:21 – The first patented MPPT from 1984
07:49 – LFP battery management PCB
08:14 – The 5.1kWh Life2 LiFePo4 LFP Battery
08:30 – LFP vs NMC fire risk and battery safety
10:16 – Is it safe and legal to install in the gargage?
11:03 – The 19″ battery rack
11:51 – How does the battery talk to the Deye hybid inverter?
12:42 – Feed-in tarrifs and battery viability
13:25 – Should you 100% cycle an LFP battery? And self managed batteries.
16:01 – Do the batteries load balance?
16:56 – Installation! (+ extra solar installer FAIL)
18:48 – The 35mm cable and crimping
20:59 – Wiring up the battery cabinet
21:48 – Installing the batteries in the rack
22:31 – First power-up smoke test
23:02 – Connecting the other batteries
24:55 – Re-connecting the grid
26:07 – The next day…
27:32 – How does the Deye inverter know about the Enphase Micro Inverters?
29:21 – Big load testing with the EV, oven, and aircon
31:17 – Conclusion
A small Australian company called Deep Cycle Systems (DCS) is suing Youtuber Stephan Fischer from AllOffroad 4×4 Adventures for defamation for (IMO) an honest multi-year battery review and documenting other users experiences with DCS LFP batteries in their 4×4 vehicles.
If DCS win this insane lawsuit it will be a threat to the entire review industry, everyone will lose.
https://www.youtube.com/@UC825uQNChjLwDQC7B3yZdoQ
GoFundMe: https://www.gofundme.com/f/help-fight-for-truth-in-youtube-reviews
https://www.patreon.com/alloffroad
Defamation lawsuit playlist: https://www.youtube.com/playlist?list=PLA2XSq4ONOVJB3uj0xsjcZiGAS1Nd8skV
The two review videos he’s being sued for:
https://www.youtube.com/watch?v=vRcSPuBob-I
https://www.youtube.com/watch?v=FuiviCPpK-Y
The Australian government have tested DCS LFP home storage batteries:
https://arena.gov.au/projects/testing-the-performance-of-lithium-ion-batteries/
Report is here: https://arena.gov.au/assets/2018/05/lithium-ion-battery-testing-public-report-12.pdf
There is some precedent for defamation by companies against individuals in Australia:
https://www.austlii.edu.au/au/journals/CommsLawB/2020/14.pdf
https://gclegal.com.au/limelight-newsletters/defaming-through-google-reviews/
Defamation act 2005: https://legislation.nsw.gov.au/view/whole/html/inforce/current/act-2005-077
The battery capacity tester discussed:
https://www.amazon.com.au/MakerHawk-Adjustable-Electronic-Intelligent-Resistance/dp/B07F3NHHST
Deep Cycle System website:
https://www.deepcyclesystems.com.au/
https://www.deepcyclesystems.com.au/dcs-battery-tech/
Reviews: https://www.productreview.com.au/listings/deep-cycle-systems-dcs
Other videos discussing the DCS lawsuit:
Louis Rossman: https://www.youtube.com/results?search_query=louis+rossmann+dcs
John Cadogan: https://www.youtube.com/watch?v=ZUA1I_oMNl4
4×4 Adventures: https://www.youtube.com/watch?v=pka5U2NgEkI
The WAVJA Photon Energy System is supposed to generate up to 60x the output of regular solar panels using balls made of magical patented woo-woo material.
A 60mm ball can generate 300kW in one second!
Let’s bust that claim by looking at the Patent in this Part 2 video.
Part 1 is here: https://www.youtube.com/watch?v=R4WQhOVlOyA
https://wavja.com/
Product video: https://www.youtube.com/watch?v=H-8y8uG6Ojw
Patent: https://patents.google.com/patent/WO2024044280A1/en?oq=wo2024%2f044280
Patent PDF: https://patentimages.storage.googleapis.com/ae/bc/69/1c9d2f0e33e8a7/WO2024044280A1.pdf
New Solar Spheres Claim to be Better than Solar Panels
TIPA Solar Panel Debunked: https://www.youtube.com/watch?v=o1nWAUZVTPw
Forum: https://www.eevblog.com/forum/blog/eevblog-1633-wavja-photon-energy-system-busted-part-1/
00:00 – WAVJA Photon Energy System on Hack-a-Day
01:18 – The patent: Reflecting light, where have we seen this before?
02:47 – It uses NMC?
04:03 – This sucker can power an EV
05:05 – The patent is just scientific word salad…
06:23 – “Stimulation Current” of 40Ah, HUH?
07:52 – It’s not Over Unity, but it’s totally Over-Unity
08:42 – 300kW Balls!
10:06 – 3D Printed using WHAT?
11:34 – How is it not an Integrating Sphere? And how does the energy get out?
15:58 – 100MW is a very conserative estimate!
17:39 – Isn’t patenting over-unity not allowed?
18:37 – A 60mm sphere can generate 300kW of electricity in ONE SECOND!
19:24 – Tested with a laser power meter? HUH?
20:33 – It’s got AI, trust me bro.
21:02 – UNLIMITED POWER! and transparent mirrors…
23:21 – Where is all this in the demo?
24:31 – Why do they have half balls?
The WAVJA Photon Energy System is supposed to generate up to 60x the output of regular solar panels using balls made of magical patented woo-woo material.
Let’s examine claim with Dave’s superior Photon Irradiance Solar System technology!
This is Part 1.
Part 2 looks at the patent.
https://wavja.com/
Product video: https://www.youtube.com/watch?v=H-8y8uG6Ojw
Patent: https://patents.google.com/patent/WO2024044280A1/en?oq=wo2024%2f044280
Patent PDF: https://patentimages.storage.googleapis.com/ae/bc/69/1c9d2f0e33e8a7/WO2024044280A1.pdf
https://hackaday.com/2024/07/06/new-solar-spheres-claim-to-be-better-than-solar-panels/
TIPA Solar Panel Debunked: https://www.youtube.com/watch?v=o1nWAUZVTPw
00:00 – WAVJA Photon Energy System on Hack-a-Day
01:51 – This looks totally legit, so I BUILT MY OWN! The Photon Irradiance Solar System
04:15 – My balls work in near darkness! And produce 5 TIMES the power as WAVJA!
05:43 – What’s that you can smell?
06:52 – It’s got AI?
06:31 – Let’s watch the video and the claims made…
07:16 – Does it generate or absorb luminosity? It’s a tad confusing…
08:10 – 30 times smaller and 7.5x the output of solar panels!
08:57 – Capturing solar power is all about the Capture Area, dummy!
09:44 – It captures light and then WHAT?
10:43 – It’s Over-Unity BS!
11:39 – It’s got storage? 24 hour operation !
12:59 – Their test setup and “power meter” results are demonstable BS!
16:12 – Roughly 0.1W per ball, SO revolutionary!
16:25 – The “charge” just comes from a commercial power bank, LOL! They have NOTHING!
16:25 – Only 3000 hours to charge your Electric Truck battery pack
17:05 – It gets MORE RIDICULOUS! Flying cars, shipping container drones, electric trucks!
18:47 – The Patent & the Founders
19:59 – Where does the light go? I’m confused…
20:41 – Conclusion
21:57 – I’m GIVING AWAY my P.I.S.S Technology!
The solar installers screwed up the job a THIRD time! AND they tried to cover it up, literally!
This time it’s my Deye inverter when they came back to fix the 2nd problem as shown in this video:
https://www.youtube.com/watch?v=mztgHWnDkHo
Why do companies still sell 2CH oscilloscopes? Plus a massive tangent into test and production engineering showing one of my old test engineering projects.
LCR meter and Transmission Line Tester design: https://www.youtube.com/watch?v=fs2MfTW4o_Q
Relay Matrix IR Measurement: https://www.youtube.com/watch?v=-mavHYV-H6o
PC104 Embedded DOS PC: https://www.youtube.com/watch?v=6ad0KP5EvpU
Linus Tech Tips Test Rack: https://www.youtube.com/watch?v=b3x28s61q3c
Test rack Part 2: https://www.youtube.com/watch?v=MbSqSZevKo8
00:00 – Why do companies still sell 2CH Oscilloscopes?
02:50 – Price Point, obviously? Education?
05:19 – Test & Production Egnineering
07:30 – 19″ Rack mount Oscilloscopes
09:13 – Headless Low Profile Oscilloscopes
12:30 – Side benefits to end of production contracts…
13:03 – PXI Oscilloscopes
14:15 – Development time vs budget…
15:22 – R&D Time costs money
17:09 – Test Engienering & Linus Tech Tips test rack example
20:10 – Off-the-shelf vs Fully Custom
21:25 – One of my old test engineering products, a custom LCR / IR meter
Forum: https://www.eevblog.com/forum/blog/eevblog-1632-why-sell-2ch-oscilloscopes-test-engineering/
$230 Micsig MDP700 High Voltage Differential probe review and comparison with the older DP10007 and the EEVblog HVP70 probe. Have Micsig fixed the CMRR issue that plauged the DP10007 design?
https://s.click.aliexpress.com/e/_DnNvolN
CMRR measured and explained: https://www.youtube.com/watch?v=vDe_BHvRpks
GaN MOSFET Experiemnts with fibre optic high voltage probe: https://www.youtube.com/watch?v=qgZgSDqmVMg
Reverse engineering the DP10007: https://www.youtube.com/watch?v=GOk1BYKSsOI
00:00 – Micsig MDP700 High Voltage Differential probe unboxing
08:50 – Basic differential probe measurement test
12:00 – Noise measurements
15:20 – CMRR measurement using FRA
21:43 – Spot frequency CMRRR measurement technique
24:51 – Measuring Unicorn farts at 100MHz
26:45 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1630-micsig-mdp700-hv-differential-probe-review/
Is it worthwhile to run water through your rooftop solar panels to cool them down while pre-heating your hot water? Or maybe heating your pool? Also solar air and water heaters. As always, YMMV, but this is why I didn’t do it.
Answering a Twitter question:
https://x.com/axion2003/status/1812740667367460971
Heat Pump Hot Water vs Gas: https://www.youtube.com/watch?v=iavM2IqueM8
Heat Pump Hot Water Energy Usage: https://www.youtube.com/watch?v=WtGlolw-BxA
Pool heat pump sizing: https://www.youtube.com/watch?v=oWi6pgg1W1A
Forum: https://www.eevblog.com/forum/blog/eevblog-1630-solar-panels-for-water-pre-heating/
A Konika Minolta bizhub C284e A3 colour photocopier found in the dumpster. Enjoy Dave’s embarrassment at the redundant teardown.
Ebay listing for original modern art print: https://www.ebay.com.au/itm/226241082176
Forum: https://www.eevblog.com/forum/blog/eevblog-1629-dumpster-find-a3-colour-photocopier/
Reinstallation of the 5kW Enphase microinverter home solar power system, and installation of a new 5kW Deye Hybrid inverter string system did not go well…
Forum: https://www.eevblog.com/forum/blog/eevblog-1628-home-solar-re-install-upgrade-fail/
Deye user manual: https://www.sunovagroup.com.au/wp-content/uploads/2023/12/SUN-3-6K-SG04LP1-AU-1.pdf
00:00 – New Trina, old LG, and even older LG panels
03:44 – Salute the old Sunnyboy 3kW string inverter
05:23 – New 415W Trina, old 370W LG, and even older 250W LG panels. Plus some bonus 440W Trina panels.
06:45 – The old fuse box
10:00 – Roof racking installation
14:49 – Old 370W LG panels are getting reused
16:36 – Panel installation on the roof
20:46 – Timelapse
21:35 – New 5kW Deye Hybrid inverter installation has problems…
24:35 – And now the Solar Analytics system fails!
25:56 – I got it working!
30:30 – The Electrician with no Multimeter!
31:02 – Solar Assistant running on a Raspberry Pi 3
33:51 – Summary of the dodgy half and half pizza install
35:28 – Update on the various monitoring systems, Enphase, Solar Analytics, and MyEnergi Zappi
A talk with Scott Williams from Xentronics at the Electronex show about freelancing and running an electronics design consultancy business.
https://xentronics.com.au/
The Amp Hour Talk 1:
https://theamphour.com/624-design-manufacturing-consulting-with-scott-williams-from-xentronics/
Talk 2:
https://theamphour.com/645-moving-down-the-stack-with-scott-williams/
Forum: https://www.eevblog.com/forum/blog/eevblog-1627-electronex-engineering-consultancy-with-xentronics/
My solar power installer HAD ONE JOB but FAILED.
A short story. LOL along as they attempt to reinstall and commision my Enphase microinverter solar power system.
Aircon Install FAIL video: https://www.youtube.com/watch?v=XD5Emhqd5Ks
Forum: https://www.eevblog.com/forum/blog/eevblog-1626-you-had-one-job!-(solar-power-install-fail)/
Uni-T are making a surprising move into the mid end instrument market with some custom ASIC based oscilloscopes, spectrum analysers, signal generators and a bunch of other instruments.
A talk with Mark Isherwood from Rapid-Tech, the Australian dealer for Uni-T.
https://rapid-tech.com.au/uni-t-instruments/
Forum: https://www.eevblog.com/forum/blog/eevblog-1625-electronex-scope-wars-the-rise-of-uni-t/
An interview at the Liquid Instruments stand at Electronex 2024 about the Moku range of multi-function mixed signal oscilloscope, designed and built in Australia!
Thanks to Ben Price for answering the questions even though he’s the mechnical engineer!
https://www.liquidinstruments.com/
Forum: https://www.eevblog.com/forum/blog/eevblog-1624-electronex-liquid-instruments-moku-oscilloscope/
Walkthrough of the 2024 Electronex trade show in Sydney.
Forum: https://www.eevblog.com/forum/blog/eevblog-1623-electronex-2024-walkthrough/
This is the biggest mistake beginners often make when using a multimeter ohms function.
A customer returned an EEVblog BM235 multimeter because it was “Faulty”
Was it? Let’s find out what happens when you try and measuse a CAN bus with a multimeter.
Forum: https://www.eevblog.com/forum/blog/eevblog-1622-dont-make-this-multimeter-mistake/
00:00 – Don’t measure a CAN bus with a multimeter!
01:50 – Trying different multimeters
05:21 – Oscilloscope CAN bus measurement
06:30 – BEWARE measuring resistors in-circuit
08:16 – Power supply voltage example
More mailbag!
A look at the RadiaCode Radiation Monitor, and the LattePanda Mu Intel N100 Compute Module.
https://www.radiacode.com/
https://amzn.to/3yV5Gp4
https://www.lattepanda.com/lattepanda-mu
https://www.dfrobot.com/kit-004.html
Github: https://github.com/LattePandaTeam/LattePanda-Mu/tree/main/Electricals/Examples/%5BDFR1141%5DFull%20EVA%20Carrier%20for%20LattePanda%20Mu
Part 2: https://www.youtube.com/watch?v=UE_srZZdPjM
00:00 – Mailbag
00:30 – Radiacode 103 Radiation Detector & Spectrometer
07:48 – Teardown
14:09 – LattePanda Mu Intel N100 Compute Module
25:22 – Power up
Forum: https://www.eevblog.com/forum/blog/eevblog-1621-mailbag-radiacode-radiation-monitor-lattepanda-mu-compute-modu/
Extreme teardown of the Deye SUN-5K-SG04LP1 5kW hybrid solar inverter.
Will it contain the quality components claimed?
Also a topology reverse engineering of all the stages.
Hi-Res photos:
00:00 – A generous and coincidental donation from a viewer
00:37 – We have the brochure, let’s check the claims!
02:44 – Front panel PCB
03:46 – The gigantic heatsink
04:44 – Nippon Chemi-Con Capacitors? REALLY?
05:54 – Heatsunk and potted inductors and transformer teardown
10:19 – Main PCB’s and the confusing layout
12:53 – The fused battery input
13:37 – Are the MOSFET’s and IGBT’s as advertised?
15:10 – SMD high current links for PnP benefits
16:14 – Detailed circuit topology schematic reverse engineering
18:29 – Earth connection testing
19:07 – MOSFET vs IGBT
19:51 – Grid side IGBT switching and tri-level switching
20:46 – Solar Panels are capacitors to earth and that screws the CMRR
21:34 – HERIC switching topology and patent lawsuits!
23:50 – Grid and Load connections
25:07 – The battery bidirectional DC-DC converter
28:14 – H-Bridge and parallelism
30:14 – Switching drive stages
31:25 – Main processor PCB and a TI DSP ripoff?
32:51 – Redundant backup DSP controller?
34:40 – Genrator and Load conection relay switching
35:49 – Panasonic Relays? WHERE?
37:02 – User Connection PCB
38:25 – Conclusion
Datasheets:
https://www.fet.discoveree.io/datasheet.php?view=pdf&file=crmicro/crsq027n10n.pdf
https://www.magnachip.com/wp-content/uploads/2020/10/MBQ40T65QES-1.pdf
https://www.lcsc.com/datasheet/lcsc_datasheet_2209081730_Wuxi-NCE-Power-Semiconductor-NCE40TS120VTP_C5160411.pdf
https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2211151030_Vishay-Intertech-VS-EPX3007L-N3_C5263741.pdf
ADVchip DSP: https://file.elecfans.com/web2/M00/6F/21/poYBAGNEwS-AKpNeAIfcFmyDrAQ938.pdf
AVP32F335 DSP: http://advancechip.com/mobile/32fd/61.html
Fraunhofer ISE Successful in Patent Infringement Process for HERIC Inverter Technology:
https://www.ise.fraunhofer.de/en/press-media/press-releases/2022/fraunhofer-ise-successful-in-patent-infringement-process-for-inverter-technology.html
Forum: https://www.eevblog.com/forum/blog/eevblog-1620-deye-solar-hybrid-inverter-extreme-teardown/
More Mailbag!
00:00 – THE Don McKenzie! and a bonanza of embedded history
https://www.dontronics.com/jump-list.html
https://www.dontronics.com/First-pc.html
08:44- PBUFF prototype
18:38 – Photon, the world’s longest battery life camera (Open Source)
https://toaster.llc/photon/index.html
29:19 – Sanyo ICC-811 Mini Calculator from 1972
37:33 – Japanese Gadgets: USB to Bluetooth converter + USB Cable Tester
https://bit-trade-one.co.jp/
43:28 – Professional Electronic Design Best Practices Book
https://www.amazon.com/Professional-Electronic-Design-Best-Practices/dp/B0C1J56V97/
51:08 – Hoppes Brain MT-200 package adapter
https://hoppesbrain.com/
Forum: https://www.eevblog.com/forum/blog/eevblog-1619-mailbag-featuring-don-mckenzie/
How To Derive The Equation For Charge In A Capacitor, E = 1/2 C.V²
NOTE: Re-edited from an old impromptu video to remove all unrelated stuff about the dumpster whiteboard I found.
Forum: https://www.eevblog.com/forum/blog/eevblog1618-how-to-derive-the-equation-for-charge-in-a-capacitor/
Building and testing an architectural wall wash LED Lighting solution.
Part 2: https://www.youtube.com/watch?v=5mueaTsus8o
Counting LED photons: https://www.youtube.com/watch?v=TJcMgoJ4DOE
Forum: https://www.eevblog.com/forum/blog/eevblog-1617-architectural-led-lighting-build-test/
Datasheets:
https://havit.com.au/products/hv9693-6080-deep-square-up-down-aluminium-profile
https://cdn.shopify.com/s/files/1/1760/2029/files/HV9723-IP20-240-XK-2_Spec_Sheet_JUN23.pdf
https://cdn.shopify.com/s/files/1/1760/2029/files/HV9783-IP20-168-XK_Spec_Sheet_JUN23.pdf
https://havit.com.au/products/hv9783-ip20-168-4k-32-6w-ip20-led-strip-4000k
00:00 – Custom architectural LED wall wash lights
01:27 – Dual sided aluminimum profile
03:45 – 19W/m LED strip
06:08 – 32W/m LED strip
08:20 – Thermal adhesive backing
08:53 – EcoLamp LED Drivers
10:36 – Cable manage the design for replacement
12:30 – Testing
13:10 – LED strip analysis under the microscope
15:04 – Bench testing and verifiying the 19W/m spec
17:28 – Finding the SMD LED constant current driver chip
21:56 – Found it, the Crosschip DS-INK1101
24:47 – Bench testing and verifiying the 32W/m spec
26:52 – Bench testing the dimming
30:09 – Testing the driver adjustable dimming with external input
You can easily replace any chip crystal circuit with a dedicated external crystal oscillator. Reducing your BOM count, and making your design easier, smaller, and potentially more robust.
Cyber City Circuits: https://www.youtube.com/@cybercitycircuits
https://twitter.com/MakeAugusta/status/1788651197055827992
Forum: https://www.eevblog.com/forum/blog/eevblog-1614-circuit-design-tip-crystal-oscillators/
Apple just released the new iPad Pro M4. Normally I wouldn’t care, but it’s about Engineering vs Marketing, and we can run some numbers, so let’s dive in.
What can engineers do with an extra mm in thickness? How about double the battery capcity?
Better repairability would have been nice too!
Featuring DaveCalc.
https://twitter.com/peteoxenham/status/1788016699477983699
Forum: https://www.eevblog.com/forum/blog/eevblab-118-new-ipad-pro-volumetric-engineering-vs-marketing/
Simple repair on the neighbours $4500 Audiophile Chord Hugo DAC.
Replacing the rechargeable lithium ion batteries wasn’t quite as simple as expected though…
And is this thing worth $4500?
Forum: https://www.eevblog.com/forum/blog/eevbog-1613-audiophile-repair-chord-hugo-dac/
Siglent SDS1000X HD 12 bit Oscilloscope Teardown and brief play, noise measurement, and comparison to the SDS2000X HD
Hires photos:
SDS2000X HD Teardown: https://www.youtube.com/watch?v=lUAevbBh0rQ
Forum: https://www.eevblog.com/forum/blog/eevblog-1612-siglent-sds1000x-hd-12-bit-oscilloscope-teardown/
00:00 – Siglent SDS1000X HD 12 bit Oscilloscope
00:39 – Unboxing problem…
01:21 – For the film afficionardoes
01:31 – Brief look over
04:33 – Comparison to SDS2000X HD
05:17 – Teardown
07:26 – PSU differences
09:17 – Main PCB comparison to 2000X HD
12:35 – Front End comparison
14:56 – Cooling
15:15 – Front End Tweak function looks SCARY…
16:25 – There is no Manual memory depth setting
18:02 – ZERO BNC microphonics!
19:13 – Noise measurement
The TOP 5 Jellybean 7440 and 4000 series logic chips.
Forum: https://www.eevblog.com/forum/blog/eevblog-1611-top-5-jellybean-7400-4000-logic/
Schmitt Trigger video: https://www.youtube.com/watch?v=Ht48vv0rQYk
00:00 – Top 5 TTL and CMOS Jellybean chips
00:37 – Different 7400 series family types
01:52 – What makes a Jellybean component
3:27 – CD4051 / CD4052 / CD4053 Analog Multiplexer Switch
17:42 – 74HC595 8 Bit Latched Shift Register
20:58 – Used in the MXO4 oscilloscope
24:09 – Driving LED’s
26:12 – 74HC74 Dual D Flip Flop
27:00 – Used in the Rigol HDO1000 Oscilloscope
28:14 – Uses for a D Flip Flop
28:53 – Special Mention 74HC374/ 74HC574
30:35 – 74HC14 Hex Schmitt Trigger Inverter
35:18 – Last chip, what about NAND NOR or XOR?
36:06 – 74HC245
The jellybean Components Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHv268f0mW5m1t_hq_RVGRSA
A look at the Deye 5kW Hybrid Solar Inverter and attempted teardown.
SUN-5K-SG04LP1-AU
Forum: https://www.eevblog.com/forum/blog/eevblog-1610-deye-hybrid-solar-inverter/
Joule Power: https://joulepower.com.au/
Teardown video: https://www.youtube.com/watch?v=UO1lDaIDBo0
Manual: https://www.sunovagroup.com.au/wp-content/uploads/2023/12/SUN-3-6K-SG04LP1-AU-1.pdf
A lot of texbooks don’t teach Composite Amplifiers, but they are one of the most used circuit configurations to solve real world design poblems where you have multiple conflicting specifications.
Opamp Tutorial Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHu2FviAaZaiyXwN41G4b1Lf
Cascaded Compound Amplifiers: https://www.youtube.com/watch?v=ZvT9hHG17tQ
Forum: https://www.eevblog.com/forum/blog/eevblog-1609-composite-amplifier-tutorial-practical-demo/
00:00 – Composite vs Compound Amplifiers
02:53 – How a Composite Amplifier works
05:09 – Why not just cascade them?
07:23 – This doesn’t just apply to opamps
08:24 – An example with gain, and another way to look at it
09:37 – Composite gain vs stage gain
11:19 – What’s the catch? + rule of thumb for stability
12:42 – Another example: Composite precision high bandwidth amplifier
14:50 – Breadboard demonstration of Composite vs Compound amplfiers
19:09 – Changing to Composite configuration and Magic Happens
20:07 – More magic as it compensates for the buffer drop too
More mailbag!
00:00 – Jumperless Breadboard from Architeuthis Flux & WokWi
https://www.tindie.com/products/architeuthisflux/jumperless/
https://hackaday.io/project/191238-jumperless/log/222858-getting-started-using-your-jumperless
https://wokwi.com/
https://www.digikey.com/en/maker/projects/jumperless/2e62cc88ee6145bc924041dd486de76f
https://theamphour.com/599-an-interview-with-uri-shaked-wokwi-com/
08:42 – Trying the software, it didn’t go so well…
21:20 – Automated probe connection function
22:35 – My old IC Tester project
23:32 – 16TB Hard Drive
25:26 – Modius Headband: Induce sickness to loose weight?
Lime Forge Ltd Sense See Bike Light : https://seesense.cc/collections/icon3/products/new-see-sense-icon3
29:36 – Assembly Specialists Breadboard
https://assemblyspecialist.com/WebStore/breadboards.html
35:11 – Sanwa PS8A Pocket Multimeter
https://overseas.sanwa-meter.co.jp/products/digital_multimeters/ps8a.html
45:26 – BENQ IdeaCam S1 Webcam
https://www.benq.com/en-au/ideacam/supreme/s1-plus.html
Forum: https://www.eevblog.com/forum/blog/eevblog-1608-mailbag/
Physically vibrating your power supply at a sub harmonic of your PSU switching frequency can potentially lower your system noise. A practical demonstration.
AlienTek DP100: https://s.click.aliexpress.com/e/_DeWCLIN
Forum: https://www.eevblog.com/forum/blog/eevblog-1607-psu-switching-noise-reduction-via-vibration/
Linked videos:
Tesla AI PSU problem: https://www.youtube.com/watch?v=YIbQ3nudCA0
Vibration coherence: https://www.youtube.com/watch?v=uus_cpZiqsU
Vibration testing: https://www.youtube.com/watch?v=1Y2L6QLOi-c
AlienTek DP100 PSU: https://www.youtube.com/watch?v=Pd6LG7iP2GQ
Ceramic Cap Piezeoelectric effect: https://www.youtube.com/watch?v=F2gX-R1k7MM
Ceramic Capacitor Cracking: https://www.youtube.com/watch?v=QgKY5QWehME
AlienTek DP100 100W USB-C PSU REVIEW
https://s.click.aliexpress.com/e/_DeWCLIN
PSU Noise measurement: https://www.youtube.com/watch?v=G8Qoj3TpO9A
Forum: https://www.eevblog.com/forum/blog/eevblog-1606-$45-alientek-dp100-100w-usb-c-psu-review/
00:00 – AlienTek DP100 100W USB-C PSU Unboxing
02:43 – Power on and operation
08:57 – User Manual
10:01 – Trying USB-C source
10:44 – Setting Menu
12:00 – uSupply Inception
12:55 – Physical size comparison
13:16 – Teardown
14:44 – PCB Inspection and design analysis
18:14 – BOM Consolidation & MOSFET’s
19:15 – USB Power Delivery Chip
20:46 – MP9928 Buck Converter & PWM Current Limiting
23:37 – Zero drift opamps
24:14 – Processor
24:52 – Connector LED lighting
26:09 – Housing
26:39 – DC input testing
27:28 – Output noise measurement
28:57 – Classic Dave GOOF
29:57 – USB-A vs USB-C input noise
31:37 – Voltage Accuracy test
32:11 – Real noise measurements
33:08 – MAGIC SMOKE!
34:12 – Max 100W load testing
35:45 – Overshoot and CV/CC mode change testing
37:35 – Conclusion
Dave is chasing fart noises in this JBL Charge 3 waterproof speaker.
A teardown, and powerup on the bench to find the mysterious fart noises.
Will it get repaired, or will the fault do a Harold Holt?
Part 2: https://www.youtube.com/watch?v=u7sVGnrf0P0
Forum: https://www.eevblog.com/forum/blog/eevblog-1605-chasing-fart-noises-jbl-charge-3-repair/
00:00 – JBL Charge 3 Waterproof Speaker Fault
02:17 – Teardown
07:13 – Drivers
08:16 – Passive Radiators
09:58 – The Case Moulding
10:46 – Main PCB
11:36 – Under the microscope
15:30 – What’s this Power Rail doing?
18:07 – Power Rail Capture
20:16 – Are we chasing a red herring down a rabbit hole?
20:56 – Trying to capture the fault: Oscilloscope vs Microphone
22:22 – The Fault has done a Harold Holt
Burden Voltage is a BIG trap with Multimeters, don’t get caught out!
A short video demonstrating the impact of Burden Voltage / Shunt Resistance on current measurement.
Mutlimeter Shunt Tutorial Part1: https://www.youtube.com/watch?v=jx0dryLmUEQ
Part 2: https://www.youtube.com/watch?v=xSEYPP5Xsi0
Forum: https://www.eevblog.com/forum/blog/eevblog-1604-beware-multimeter-burden-voltage/
The 1km Colas Wattway Solar Roadway in Normandy in France is finally being scrapped.
Press F in the chat.
€5M of taxpayer money down the drain. That money could have bought a 5MW commercial solar farm that produced 15 times the output power, and lasted decades longer.
Forum: https://www.eevblog.com/forum/blog/eevblog-1603-colas-wattway-solar-roadways-is-dead/
Reference links:
https://www.auto-moto.com/en-bref/cette-route-solaire-qui-a-coute-5-millions-d-euros-va-etre-demantelee-30624
https://actu.fr/normandie/tourouvre-au-perche_61491/on-s-attendait-a-rencontrer-des-problemes-la-route-solaire-de-tourouvre-au-perche-une-idee-pas-si-lumineuse_53438905.html
https://time.com/4616912/solar-panel-france/
https://www.theguardian.com/environment/2016/dec/22/solar-panel-road-tourouvre-au-perche-normandy
https://www.forbes.com/sites/johnparnell/2019/08/21/frances-solar-highway-was-always-a-road-to-nowhere/?sh=783cb5c971b6
https://www.wired.co.uk/article/france-solar-panel-roads
https://www.businessinsider.com/first-solar-road-france-failure-photos-2019-8
https://www.colas.com/en/innovation/greater-mobility-lower-impact/
https://mymodernmet.com/france-wattway-solar-road/
https://www.marketwatch.com/guides/solar/solar-farm-cost/#:~:text=Solar%20Project%20Size&text=At%20an%20average%20price%20of,the%20intention%20of%20selling%20electricity.
https://www.popularmechanics.com/technology/infrastructure/a28720252/french-solar-road-failure/
https://www.digitaltrends.com/cars/frances-first-ever-solar-panel-road-appears-to-have-some-serious-issues/
https://www.wattwaybycolas.com/en/references/photos.html
Technical specs: https://www.wattwaybycolas.com/media/documents/documents-en-anglais/dp-wattway-pack-gb.pdf
Map: https://www.google.com.au/maps/@48.5872378,0.647139,3a,75y,189.86h,63.17t/data=!3m6!1e1!3m4!1sRGiblnJFqgFm2wye5_F_1Q!2e0!7i16384!8i8192?entry=ttu
My previous videos on Colas Wattway:
https://www.youtube.com/watch?v=RjbKYNcmFUw
https://www.youtube.com/watch?v=rpwx-8s1M38
The near 18 year grift of Solar Freak’n Roadways:
https://www.startengine.com/offering/solar-roadways
00:00 – Colas Wattway Solar Roadways is DEAD
07:47 – Not even the biggest road construction company can make Solar Roadways work
08:32 – Even Colas admit it’s a failed concept
10:13 – How may homes can it power?
11:29 – How big a solar farm can you buy for €5M ?
13:16 – One final walk down the biggest solar roadway in the world
16:37 – What ever happened to Solar Freak’n Roadways?
Repair of a Sony HCD-SBT20B Bluetooth Stereo. What it’s like to nail the repair and then, well come-a-gutsa and have to go down the rabbit hole to fix the fix all whilst battling bad design info.
How VFD displays work: https://www.youtube.com/watch?v=gZIRPJt69sM
Mud run video: https://www.youtube.com/watch?v=yAahT8_P-_E
Tektronix autopsy: https://www.youtube.com/watch?v=VZCokbsTwmQ
Forum: https://www.eevblog.com/forum/blog/eevblog-1603-sony-amplifier-repair/
00:00 – Sony HCD-SBT20B Bluetooth Stereo with a water ingress problem
01:17 – Water isn’t that bad actually, even mud.
02:49 – Comically long screwdriver time
04:09 – Vacuum Fluorescent display for all you VFD fanboys
05:10 – Annoying construction
06:14 – Logic level problem? Doesn’t seem to be the PSU.
07:57 – Yuck!
09:58 – PCB Cleaning time
12:11 – Did the cleaning work?
13:28 – Hang on, I think I see something…
14:36 – More corrosion
15:21 – Back to measuring voltages on the VFD
17:15 – Handy use of Auto Hold
18:00 – VFD dispaly under the microscope
19:33 – Cathode measurement
20:13 – Anode connection tracing
22:10 – I wouldn’t have designed it like this
23:08 – Sanity check
24:32 – What’s in the can?
28:16 – Schematic time. Sony service manuals are something else
33:22 – Don’t come-a-gutsa on dual diode pinouts
35:16 – Let’s power it up on the bench
37:19 – There’s something very strange about this…
40:04 – Oh FFS!
42:03 – Now it’ll work…
How VFD (Vacuum Fluorescent) Displays Work.
Extracted from a hacking video #717: https://www.youtube.com/watch?v=clUVEyi_YNM
Forum: https://www.eevblog.com/forum/blog/eevblog-1601-how-vfd-(vacuum-fluorescent)-displays-work/
ouute: Road Based Energy! Harvest kinestic energy from cars using speed bumps. Will this decarbonise and save the planet? Do the numbers add up?
https://www.rouute.com/road-based-energy
Discount Morgan Freeman promo video: https://www.youtube.com/watch?v=uGw2lcTS1gs
Introducing Rouute test video: https://www.youtube.com/watch?v=BxnksdL5nx8
https://www.electricaltimes.co.uk/worlds-first-road-based-energy-recovery-system-set-to-launch-to-market-to-help-drive-net-zero-agenda/
https://www.business-live.co.uk/manufacturing/grimsby-start-up-could-generate-26824298
https://www.facebook.com/rouutetechnologies/
Kinetic Energy Calculator: https://www.calculatorsoup.com/calculators/physics/kinetic.php
Forum: https://www.eevblog.com/forum/blog/eevblog-1600-rouute-road-based-energy-busted/
00:00 – Rouute Road Based Energy
01:58 – Discount Morgan Freeman narrates the video
03:21 – UN Goal 7 compliant
04:40 – The founder explains and shows a testing video
06:37 – Let’s look at their info pack
09:03 – Can we get serious now?
11:19 – Reminds of PaveGen that is still gaining millions in funding for energy harvesting pavements
12:41 – You canna’ change the laws of physics Captain!
13:30 – Let’s calculate the Kinetic Energy viability using their numbers
14:34 – They seem to be out by an order of magnitude at least…
16:15 – Converting kinetic energy into electrical energy is just energy THEFT on flat roads
19:57 – It works, but is all but impractical in most circumstances.
The TOP 5 Jellybean Bipolar Junction Transistors (BJT)
00:00 – What is a Jellybean Component?
01:30 – Low Power BJT: 2N3904 / 3906, SMD Marking 1A
06:49 – 2N2222
08:52 – BC547 fanboys
09:28 – Medium Power BJT: FMMT617-619 / 717-719
12:27 – SS8050 / 8550
15:08 – High Power BJT: 2N3055 / 2955
17:09 – Sneaky MOSFET, and the differences from BJT’s
19:30 – High Voltage BJT: FZT458 / 558, FMMT458/558
Jellybean Series Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHv268f0mW5m1t_hq_RVGRSA
Forum: https://www.eevblog.com/forum/blog/eevblog-1599-top-5-jellybean-bipolar-transistors/
Teardown and reverse engineering of the ANENG AC11 Smart Mains Socket Tester + DaveCAD schematic.
Forum: https://www.eevblog.com/forum/blog/eevblog-1598-aneng-ac11-socket-tester-teardown-schematic-reverse-eng/
00:00 – ANENG AC11 Mains socket wiring tester
00:59 – Simple mains passive socket tester with neon bulbs
03:33 – Fluke ST240+ RCD Socket Tester
06:06 – Testing
07:14 – Teardown
10:54 – The multi colour segmented LCD
12:15 – Reverse Engineering Schematic
14:54 – Chipset Datasheet
Looking at the new $80 Zoyi/Zotech ZT703S Dual channel 50MHz 25,000 count 0.05% handheld oscilloscope/multimeter compared to the single channel 10MHz 10,000 count ZT702S
ZT-702S review: https://www.youtube.com/watch?v=aUU-PGUnd0E
Forum: https://www.eevblog.com/forum/blog/eevblog-1597-zoyi-zt-703s-$80-2ch-50mhz-oscilloscopemultimeter-review/
Hi-Res photos:
00:00 – The new $80 ZT-703S vs the $60 ZT-702S
03:40 – Power on and screen differences
06:25 – Multimeter
07:49 – The Bargraph is still a complete JOKE
08:50 – Power-off memory test
09:41 – Dumb Arse Dave BRICKS the ZT-702S !
10:23 – The SAME current measurement FAIL
12:19 – 0.05% ?
13:17 – Same BNC connector issue
13:44 – The signal generator is still a joke
15:53 – Trigger level issue FIXED
16:39 – Range overload bug FIXED
19:10 – Teardown
25:07 – Oops…
25:21 – Battery life and current consumption test
26:54 – Conclusion
Teardown of the UNRELEASED Digilent Analog Discovery Pro ADP2230
It will be released on the 29th Feb 2024 for US$695
Featuring the AvE Widlarizer!
Hi-Res photos:
Analog Discovery 3 Review: https://www.youtube.com/watch?v=5SbNnaMM1tQ
00:00 – Mystery Mailbag – The Analog Discovery Pro ADP2230
02:24 – Turns out this won’t be released for 2 months!
02:58 – Product comparison with Analog Discovery 3
03:59 – Not even the Beta software has support yet
04:33 – Lower cost Pro model
06:01 – First impression
08:31 – Teardown
10:09 – This calls for the AvE Widlarizer!
11:19 – PCB
14:08 – PCB comparison with AD3
15:57 – Oscilloscope Front End
18:18 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1596-new-digilent-analog-discovery-pro-adp2230-teardown/
A Chinese startup has developed a tiny 50 year life diamond nuclear battery that’s going to change the world! Yeah, nah. Same old betavoltaic, same old limitations, and same old startup marketing hype.
Beijing Betavolt New Energy Technology Co., Ltd.
https://www.betavolt.tech
https://www.betavolt.tech/359485-359485_645066.html
https://www.betavolt.tech/cp_531390.html
https://newatlas.com/energy/betavolt-diamond-nuclear-battery/
https://www.neimagazine.com/news/newschinas-betavolt-develops-50-year-nuclear-battery-11439320
https://world-nuclear-news.org/Articles/Nuclear-battery-Chinese-firm-aiming-for-mass-mark
https://www.chinadaily.com.cn/a/202401/16/WS65a68ff7a3105f21a507c9b7.html
https://www.greencarcongress.com/2024/01/20240114-betavolt.html
https://www.batterypowertips.com/betavolt-achieves-miniaturization-of-atomic-batteries-with-50-year-autonomy/
https://www.eurasiantimes.com/chinas-nuclear-battery-can-power-mobile-phones/
https://www.thediplomaticaffairs.com/2024/01/13/the-dawn-of-nuclear-batteries-and-the-potential-reshaping-of-the-global-economy/
https://www.bristol.ac.uk/media-library/sites/cabot-institute-2018/documents/Diamond_battery_FAQs_Nov_2016.pdf
https://www.bristol.ac.uk/media-library/sites/cabot-institute-2018/documents/Diamond_battery_FAQs_Nov_2016.pdf
https://en.wikipedia.org/wiki/Diamond_battery
Nuclear Diamond Battery Debunked: https://www.youtube.com/watch?v=uzV_uzSTCTM
Nuclear Diamond Battery FRAUD!: https://www.youtube.com/watch?v=5M5MF6KE-jY
Mailbag with Nuclear Tritium battery: https://www.youtube.com/watch?v=yNQCaSNIrEM
Casio calculator test: https://www.youtube.com/watch?v=qo0mizb3CE8
Forum: https://www.eevblog.com/forum/blog/eevblog-1595-50-year-chinese-nuclear-diamond-battery!/
An in-depth look at the engineering inside a quantum computer, and also demonstrating the operational results live and how they are measured.
With Professor Andrea Morello who is the Scientia Professor of quantum engineering in the School of Electrical Engineering and Telecommunications at the University of New South Wales, and a Program Manager at the ARC Centre of Excellence for Quantum Computation and Communication Technology.
Previous in-depth discussion on how quantum computers work: https://www.youtube.com/watch?v=jDW9bWSepB0
Repairing the Haefely Trench PESD-1600 ESD Tester, plus some testing and discussion of the IEC 61000-4-2 standard.
Part 1 teardown: https://www.youtube.com/watch?v=-xtZvSG4N9I
Rotary encoder teardown: https://www.youtube.com/watch?v=UgpHZisG1PQ
Forum: https://www.eevblog.com/forum/blog/eevblog-1593-16kv-esd-tester-repair-part-2/
00:00 – Repair of the Haefely Trench PESD-1600 tester
01:40 – Special snowflake rotary encoder test
03:15 – Laugh at Dave as he solders before looking
05:06 – Nothing worse than a floppy pin
07:09 – Soldering the switches
11:01 – The reassembly nighmare
18:52 – Does it work?
19:53 – Battery pack replacement
22:27 – ESD Testing that’s good enough for Australia
Fluke 287 Multmeter Teardown.
HiRes teardown photos:
Testing video: https://www.youtube.com/watch?v=FgkD8K0Ssdc
Forum: https://www.eevblog.com/forum/blog/eevblog-1592-fluke-287-multimeter-teardown/
Colas Wattway is back with the two 1000sqm solar cycleway installations in the Netherlands!
The Dutch are riding their bikes on two new solar cycle paths
Just 4 months ago! https://www.youtube.com/watch?v=305EVbcCub4
Forum: https://www.eevblog.com/forum/blog/eevblog-1591-more-colas-wattway-solar-cycleways-in-the-netherlands!/
Some FAIL articles:
https://nos.nl/artikel/2484255-innovatief-zonnefietspad-bij-maartensdijk-levert-bijna-niets-op
https://www.dutchnews.nl/2023/07/solar-bike-path-fails-to-meet-electricity-targets-again/
https://www.wattisduurzaam.nl/37168/energie-beleid/utrechts-zonnefietspad-op-koers-voor-40-van-beoogde-opbrengst/
https://www.wattwaybycolas.com/en/references/photos.html
https://www.colas.com/en/media/press-releases/commissioning-two-wattway-photovoltaic-cycle-paths-netherlands/
https://s.www.colas.com/cdn/ff/t-EqIdIPRtCiY46vASJDMezejJHibBO8DoRPk9njM5Y/1702047018/public/2023-12/20231211_pr-colas_wattway-in-the-netherlands.pdf
Is a modern $33 boombox from Kmart any good?
Forum: https://www.eevblog.com/forum/blog/eevblog-1590-cheap-$33-boombox-teardown/
A closer look at the scanner array head from the dumpster FAX machine teardown.
00:00 – Linear Scanner Array
04:40 – CCD sensor grouping
08:24 – The optical zebra strip
11:30 – Under the x400 Olympus microscope
Forum: https://www.eevblog.com/forum/blog/eevblog-1589-ccd-scanner-array/
The Elon Musk vision of Hyperloop has come-a-gutsa. Vigin Hyperloop One has gone out of business. Who could have predicted it?
And who’s left standing in the Hyperloop world?
Forum: https://www.eevblog.com/forum/blog/eevblog-1588-virgin-hyperloop-one-goes-bust/
00:00 – Virgin Hyperloop has gone BUST!
02:54 – Well, it did actually carry humans.
04:33 – The Hyperloop isn’t actually an Elon Musk project
05:33 – Buying the Nevada test track for pennies on the dollar
07:23 – Australia was not immune to the madness
08:53 – It’ll cost next to nothing to run!, trust me bro
09:34 – Invetsment goes bye-bye
10:46 – It’s a fundamentally dumb idea
11:14 – They couldn’t even make it work as a cargo system
12:45 – DP World in Dubai lost their money
13:23 – Transpod Fluxjet and The Hyperloop Association!
15:45 – Nevomo Hyperloop
18:45 – Hardt Hyperloop, it’s all happening!
22:23 – Zeleros Hyperloop
24:32 – Swisspod
25:36 – Swisspod test track in Pueblo Texas
26:45 – Hyperloop Transportation Technologies
Teardown of a Brother FAX machine found in the dumpster, just because.
Forum: https://www.eevblog.com/forum/blog/eevblog-1587-dumpster-fax-teardown/
A $12 6 decade resistor box, is it any good?
And it’s not every day you have to repair a brand new product.
https://s.click.aliexpress.com/e/_Ddfe4PL
https://s.click.aliexpress.com/e/_DnK2irb
DIY Decade box: https://www.youtube.com/watch?v=G-QfDkgE2qA
IET Decade Box: https://www.youtube.com/watch?v=37gYHdY0DAM
Genrad Decade Box: https://www.youtube.com/watch?v=fKrvtYS_6fI
Forum: https://www.eevblog.com/forum/blog/eevblog-1586-stranger-things-decade-resistor-box/
00:00 – A $12 Decade Resistor Box?
01:37 – Binding Posts: You get what you get, and you don’t get upset
02:31 – Stranger Things and the Upside Down
03:52 – Figured it out
04:56 – Molding
05:15 – Wiggle Wiggle Wiggle Yeah Test
05:41 – Teardown
08:01 – Knobs
09:02 – Repair
10:01 – Perfect candidate for modding
10:44 – How the dual wipe contact works
14:37 – Conclusion
The Portable Kinetic Molecular Heater is an obvious SCAM.
We shouldn’t have to look at why, but let’s do it anyway.
Forum: https://www.eevblog.com/forum/blog/eevblog-1585-scam!-portable-kinetic-molecular-heater-busted/
00:00 – Portable Kinetic Molecular Heater
01:06 – Yep, it’s a scam
03:06 – A look at the ridiculous website claims
06:31 – It can heat your entire home and melt the snow on your roof!
07:27 – Running the numbers on the Latent Heat equation.
12:05 – The BS comes in many flavours
15:14 – Teardown of the actual Portable Kinetic Molecular Heater
17:52 – Thermal camera test
The US Department of Transport have authorised a $250M grant program to fund Wireless EV charging roads. A look at the pilot program in Detroit Michigan with the startup company Electreon:
https://electreon.com/
00:00 – Wireless EV road charging in Detroit
01:15 – $250M funding from the US Department of Transport!
03:18 – The inductive road coil
05:29 – This project is a half arsed approach to EV costs.
06:50 – Petrol/Gas vs Electric EV charging, still no contest.
07:14 – Reminds me of Adam Something and his take on Electric Busses
08:21 – Electreon gets UN Approval!
09:02 – Private company tech in roads?
09:41 – The location in Detroit
10:53 – The Chicken & Egg problem
13:52 – The problems are many
16:57 – Let’s watch the Electreon marketing video
18:16 – The EV retrofit is EASY!
20:25 – The motherload of wireless charging failure analysis document from DOT!
26:41 – They make it sound so easy!
27:56 – They want these on consumer EV’s, LOL!
Reference Links:
DOT failure analysis report: https://rosap.ntl.bts.gov/view/dot/57152
https://www.forbes.com/sites/billkoenig/2023/12/01/wireless-charging-for-electric-vehicles-may-be-advancing/?sh=5aa369e81d5f
https://apnews.com/press-release/business-wire/technology-europe-middle-east-business-israel-1894c77ba274467a8fd29373a1da4a0c
https://www.prnewswire.com/news-releases/redefining-green-transportation-new-federal-bill-boosts-wireless-ev-charging-program-301894508.html
https://www.detroitnews.com/story/business/autos/2023/11/29/detroit-road-electreon-charge-ev-14th-street/71728909007/
https://apnews.com/article/wireless-roadway-electric-vehicle-charging-detroit-22fcdeabd026d81712a0c1a12b190d9a
https://stevens.house.gov/media/press-releases/rep-stevens-introduces-bill-expand-wireless-ev-charging-programs-federal-level
https://www.frontiersin.org/articles/10.3389/fenrg.2022.926270/full
https://www.designboom.com/technology/ev-charging-highways-electreon-wireless-electric-vehicles-sweden-italy-05-24-2021/
https://www.youtube.com/watch?v=L2S2qzGkcis
https://www.theautopian.com/toyota-electreon-roads/
https://meticulousblog.org/top-10-companies-in-wireless-electric-vehicle-ev-charging-systems-market/
https://www.meticulousresearch.com/product/wireless-electric-vehicle-charging-systems-market-5178
https://australasiantransportresearchforum.org.au/wp-content/uploads/2022/05/ATRF2022_Resubmission_32.pdf
https://www.bbc.com/news/uk-england-nottinghamshire-63101889
https://www.osti.gov/biblio/1493137
A practical demonstration on how to use advanced oscillocope trigger features to trigger on an unsynchronised infrequent runt/glitch pulse.
Includes Pulse/Glitch, Runt, Interval, Zone triggering, and infinite persistence display, and waveform update speed demonstrated and explained.
Using the Rohde & Schwarz MXO4, Siglent SDS2154X HD, Keysight 3000T, Tektronix Series 2, and the Rigol DHO800.
Forum: https://www.eevblog.com/forum/blog/eevblog-1583-advanced-oscilloscope-triggering-glitchpulseruntinterval/
00:00 – Advanced oscilloscope triggering features
00:27 – The test glitch signal
01:25 – Infinite persistence mode is your first tool
02:33 – How to estimate how often you can cature this
04:39 – DaveCAD drawing of how capture windows work
05:45 – This is NOT about trigger level
06:53 – Demonstration of using Glitch/Pulse capture on the MXO4
09:46 – This glitch is actually a Runt pulse
11:31 – Can you use History mode? Yeah, but good luck…
12:47 – Interval Trigger Mode on the MXO4
13:37 – Check this out! We found another hidden glitch pulse
14:23 – Siglent SDS2354X HD
16:14 – You don’t need an expensive scope! The Rigol DHO800
17:34 – Keysight 3000T
17:47 – This is a non-synchronous free running organic glitch
18:36 – Tektronix 2 Series
18:57 – Can you use Zone Triggering? Yeah, nah.
A look at the FNIRSI DPOX180H 180MHz Handheld Digital Phosphor Oscilloscope for $123.
https://www.aliexpress.com/item/1005005564788266.html
https://eevblog.store/products/eevblog-bm036-ac-dc-clamp-meter
Forum: https://www.eevblog.com/forum/blog/eevblog-1582-fnirsi-dpox180h-180mhz-dpo-for-$123/
Elon Musk just announced that the Tesla Roadster is now open source! Do we get schematics? Let’s have a look…
https://service.tesla.com/roadster
Part 2: https://www.youtube.com/watch?v=r7Cw3GVXl44
More Mailbag!
00:00 – Mailbag Monday time
01:42 – T-88C Analog Multimeter
https://s.click.aliexpress.com/e/_DEojyDp
07:26 – Teardown
12:11 – PCB proto boards from Jon Newcomb
http://www.jnewcomb.com/
https://www.ebay.co.uk/usr/jon_newcomb
19:02 – 1990 Tandy Catalog from Ant Cross
https://www.youtube.com/@ANTandTEC
28:04 – Alcatel S12 Line Test Card
The Nuclear Diamond Battery that made a huge marketing splash back in Aug 2020 and raised $1.2M in funding, NDB Inc and it’s founder Nima Golsharifi is now being sued by the SEC for fraud. No product ever existed, no testing was ever done, and they had no customers. Oopsie!
Original Debunking video: https://www.youtube.com/watch?v=uzV_uzSTCTM
https://www.ans.org/news/article-5359/sec-files-lawsuit-against-nuclear-battery-startup/
https://www.sec.gov/files/litigation/complaints/2023/comp25829.pdf
https://www.sec.gov/Archives/edgar/data/1787068/000178706821000004/golsharifi.htm
https://www.sec.gov/Archives/edgar/data/1787068/000178706821000004/offering.htm
https://www.bidwells.co.uk/properties/origin—harlow-essex-cm17-
Forum: https://www.eevblog.com/forum/blog/eevblog-1579-nuclear-diamond-battery-fraud-lawsuit-by-sec!/
A multimeter without any screws? A 1990’s vintage Metrix MX44 multimeter torn down, tested and calibration adjusted.
Forum: https://www.eevblog.com/forum/blog/eevblog-1578-the-screwless-multimeter-metrix-mx44-teardown-calibration/
Kathy Joseph from Kathy Loves Physics joins me on The Amp Hour to discuss history and physics and we end up discussing the intricate history of the development of the Cathode Ray Tube.
Read Kathy’s Book The Lightning Tamers: https://tinyurl.com/TheLightningTamers
https://www.youtube.com/@KathyLovesPhysics
Forum: https://www.eevblog.com/forum/blog/eevblog-1577-history-of-cathode-ray-tubes-with-kathy-joseph/
Easy repair and teardown of the rather obscure Tektronix DMM916 Multimeter.
Ebay auction: https://www.ebay.com.au/itm/225848873343
Forum: https://www.eevblog.com/forum/blog/eevblog-1576-tektronix-dmm916-multimeter-teardown-(easy)-repair/
TIPA: The World’s Most Efficient Solar Panel raised £293,000 on Indiegogo and Kickstarter, AND also got a UK government innovation grant for £560,000!
They claim 3 times the power output of regular solar panels by using mirrors to reflect the light back on the solar cells (TIPA: Total Internal Photonic Absorption). They claim 80% of the light that hits a solar panel is reflected!
And when challeged by a solar cell researcher from the University of Freiburg on the claims of 80% reflectance and why they don’t independently test, there is a hirarious word salad response!
https://borchertlab.com/juliane/
Forum: https://www.eevblog.com/forum/blog/eevblog-1575-tipa-the-worlds-most-efficient-solar-panel-busted/
The owner has been busy: https://find-and-update.company-information.service.gov.uk/officers/koV1FIQV3bcKEHlZu4H5_6vAEDE/appointments
https://www.indiegogo.com/projects/tipa-the-world-s-most-efficient-solar-panel#/
https://www.kickstarter.com/projects/tipa/tipa-total-internal-photonic-absorption/description
https://gtr.ukri.org/projects?ref=105277
https://yellowstud.io/research
https://alt-things.com/about-us-3/
https://en.wikipedia.org/wiki/Shockley%E2%80%93Queisser_limit
https://www.nrel.gov/pv/reflectance-spectroscopy.html
https://www.youtube.com/@UClilz8CXhUFBRrdAUenRKWw
00:00 – Another Dodgy Crowd Funder
01:00 – £560,000 UK Government Innovation Grant!
01:42 – Let’s watch the video!
06:22 – How it works
06:58 – We can beat the Shockley Queisser Limit!
09:17 – $2BN valuation!
09:28 – The prototypes
10:15 – How they screwed up
12:06 – Reflective coatings and solar panel efficiency tradeoff
13:26 – Some actual reflection measurements using reflectance spectroscopy
15:18 – There ain’t no free lunch. The claims are BS
16:52 – The reflection/absorption efficiency tradeoff
17:54 – Let’s see what else they have developed at Yellow Studio!
19:21 – Electon Spin Battery Charging using magnetic forces!
19:55 – Solar Electromagnetic Energy Power Battery System using liquid nitrogen!
21:11 – Their other Kickstarter projects
24:14 – Hilarious word salad response to a solar cell researcher calling them out!
28:49 – Conclusion
Is a $42 Fluke multimeter any good? The Fluke 101 reviewed.
https://tinyurl.com/Fluke101
A thanks from Zotek founder: https://www.youtube.com/watch?v=2I7m43RyVWU
Pocket Multimeter shootout: https://www.youtube.com/watch?v=LCFEonQDkQU
Forum: https://www.eevblog.com/forum/blog/eevblog-1574-is-the-$42-fluke-101-multimeter-any-good/
00:00 – A $42 Fluke?
00:43 – Made in China, and the infamous Fluke 19
01:27 – Fluke 101 vs 106 vs 107
02:00 – Comaprison with ANENG AN8008
03:03 – The display vs the AvE Hammer
03:53 – The range switch
04:12 – The battery compartment and TL75 probe leads
06:09 – What are you buying here?
08:08 – Diode and capacitance test
09:33 – The biggest disappointment, no AutoHold
10:55 – 1200V overload test and accuracy testing
12:41 – Common mode conducted mode RFI test
13:10 – Drop testing
13:38 – Power on options
14:08 – Calibration seal and port
14:30 – Teardown
20:26 – A pocket multimeter?
21:51 – Battery life, power consumption measurements, and lithium battery test
42:09 – Conclusion
How a Rotary (Angle) Pulse Encoder works. This is entirely different to the normal quadrature phase encoder you have used before.
A teardown from the Haefely Trench PESD 1600 ESD Tester.
Unboxing & Testing video of 16kV ESD tester: https://www.eevblog.com/2023/10/13/exclusive-haefely-esd-gun-unboxing/
Pointless video about toggle switches: https://www.youtube.com/watch?v=k1C0qz8fR_U
Forum: https://www.eevblog.com/forum/blog/eevblog1573-teardown-how-a-rotary-(angle)-pulse-encoder-works/
00:00 – This is NOT a regular quadrature rotary encoder!
02:08 – Tool Tip, Pin Vice
05:41 – EDC tool shootout, Victorinox MiniChamp vs Gerber Dime vs Olight Otacle
06:34 – We’re in like Flynn!
07:13 – New Lab Jack for the Tagarno microscope
08:09 – Of course that’s how it works
09:59 – Why is this not used more often?
12:29 – How it works
14:49 – Is there another example of this type of encoder? if not, why not?
Teardown and Part 1 repair of a Haefely Trench PESD1600 16kV ESD tester.
If you can help identify the rotary encoder at 25:52 that would be awesome!
Unboxing and testing: https://www.eevblog.com/2023/10/13/exclusive-haefely-esg-gun-unboxing/
Forum thread for the rotary encoder: https://www.eevblog.com/forum/repair/help-finding-rotary-encoder/
Forum: https://www.eevblog.com/forum/blog/eevblog-1572-haefely-16kv-esd-tester-teardown-repair-part-1/
Bumper mailbag!
Send stuff to:
EEVblog Mailbag
PO Box 7949
Norwest NSW 2153
AUSTRALIA
00:00 – Mailbag
00:18 – Barry Marshall, Nobel Prize Winner returns a faulty 121GW
https://www.youtube.com/watch?v=yPLA69a5OOU
02:54 – Nobel Prize Chocolates
03:53 – Faulty 121GW
09:04 – TI SR-51 calculator from 1974
http://www.datamath.org/Sci/WEDGE/sr-51.htm
19:55 – TI SR-51 Teardown
25:15 – Digi-matic 8 calculator from 1972
29:47 – More retro calulators and assembly programming book
32:29 – Lean Multi-Platform Assembly Language Book
https://assemblytutorial.com/
https://www.amazon.com/Learn-Multiplatform-Assembly-Programming-ChibiAkumas/dp/B09VWHYDKJ/?&_encoding=UTF8&tag=ee04-20&linkCode=ur2&linkId=2b5042d0d5fc70e95e6f1cb0d2e1ddad&camp=1789&creative=9325
35:53 – Casio SL-760 credit card calculators + Sanyo
37:47 – Gent LC-517 wallet calculator
40:04 – DIY Scrabble Timer project using all discrete logic
Verilog: https://twitter.com/BrunoLevy01/status/1694973514002923808
Takachi Enclosures: https://www.takachi-enclosure.com/
More mailbag!
DIY Open Source Ploopy Headphones: https://ploopy.co/headphones/
EEtackle Probe Holder: https://www.eetackle.com/
Intertooth Wireless Bluetooth Networking Console : https://intertooth.com/
00:00 – Mailbag
00:24 – Ploopy DIY Open Source Headphones
13:32 – EEtackle Probe Holder
18:18 – Intertooth Wireless Bluetooth Networking Console
A Tesla Megapack 2.0 battery is on fire at the 100MWh Genex battery storage facility at Bouldercombe in Queensland.
https://www.abc.net.au/news/2023-09-27/tesla-battery-fire-at-queensland-renewable-energy-project/102905302
https://wattclarity.com.au/articles/2023/09/27sept-bouldercombe-bess-fire/
https://www.afr.com/companies/energy/fire-at-genex-power-battery-project-in-qld-a-rare-occurrence-20230927-p5e7ym
https://cleantechnica.com/2022/05/13/heres-what-tesla-learned-from-last-years-megapack-fire-in-australia/
https://genexpower.com.au/renew-economy-genex-eyes-trebling-of-revenue-says-new-battery-already-sopping-up-negative-prices/
Victoria Big Battery Fire Investigation Report: https://victorianbigbattery.com.au/wp-content/uploads/2022/12/VBB-Fire-Independent-Report-of-Technical-Findings.pdf
Does the $1200 IONA Tech StatIQ wireless ESD monitor band actually work? or is it just BS?
And if so, how does it work?
IONA Tech video: https://www.youtube.com/watch?v=c2Uzo5qL4JM
Wiresless ESD strap BUSTED: https://www.youtube.com/watch?v=nvgW5iWXbts
ESD Explained: https://www.youtube.com/watch?v=Uk5F3rQNUkU
ESD Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHsKCtJJ_rlRP5qE7lN-1EMX
Mud Run: https://www.youtube.com/watch?v=yAahT8_P-_E
DIY Field Mill project: https://www.youtube.com/watch?v=aTncxhQp9z0
Forum: https://www.eevblog.com/forum/blog/eevblog-1567-wireless-esd-monitor-the-iona-statiq-band-tested/
00:00 – A wireless ESD monitor? The IONA Tech StatIQ Band
02:06 – The Electric Field Mill sensor
03:27 – The Android app, and does it actually work?
06:15 – ESD ground impedance correlation
07:21 – What’s going on with the clean room bunny suit?
08:12 – Well, there’s your problem…
08:35 – Let’s try a WORKING ESD coat this time
09:23 – But is it just smoke and mirrors? Surface DC Voltmeter measurement time
11:30 – Validatd
11:52 – Calibration
12:15 – How it works
15:24 – The physics
18:09 – Conclusion
Has the new Rigol DHO800 and DHO900 oscilloscope changed the game in low end scopes?
Starts at $299 with 12bit ADC, HDMI, VESA mount, and USB-C power.
Teardown: https://www.youtube.com/watch?v=KQF4UzLPpr0
Fan upgrade test: https://www.youtube.com/watch?v=zoyaHOqp9gI
DIY Battery: https://www.youtube.com/watch?v=MbBq1AVIQAc
Forum: https://www.eevblog.com/forum/testgear/rigols-new-dho800-oscilloscope-unbox-teardown/
00:00 – History of game changing Rigol Oscilloscopes
03:27 – All the DHO1000 and DHO4000 goodness
05:14 – Compared to the DS1054Z
05:52 – The DHO900
06:38 – Unboxing
07:07 – Liteon USB-C PSU
07:30 – It’s TINY!
08:42 – VESA mount & Fan Noise
09:08 – HMDI, touch screen, and mouse
10:41 – USB-C physical connection
11:25 – External battery power
11:45 – The couch feet
12:01 – The boot time is not great
12:10 – Micro SD card Android O/S
12:36 – 7″ Capacitive touch screen
13:36 – The LED’s aren’t great
13:52 – Knobs
14:32 – The SMELL
15:01 – Sample rate and memory depth QUIRK
16:34 – A wasted button, and the Rigol Menu
17:13 – Measurements
18:11 – Trigger capability
18:36 – Vertical menu system
19:51 – It’s basically a $299 DHO4000
20:23 – DS1054Z size comparison
21:54 – Built down to a price
22:29 – 12 bit is great, but why not Eres?
22:57 – Waveform update rate TESTED
24:49 – It does drop
25:09 – And it’s impressive again
25:45 – Waveform window organisation
26:52 – Alias test
27:05 – The FFT waveform updating is impressive
28:04 – Peaks would be nice
28:16 – Can I have snappy cursors please
28:48 – A little bit annoying
29:01 – 12 bit FFT test FAIL
32:01 – FFT noise floor
32:15 – Siglent 1104X-E FFT and R&S MXO4 FFT comparison
33:17 – The pulse response TESTED
33:45 – Front end noise TESTED
35:12 – Input microphonics TESTED
35:27 – Here’s the money shot, the 12bit ADC resolution
36:22 – Vertical range BUG
37:19 – QUICK button and screen capture
38:22 – Date and Time is overrated
38:42 – RECORD mode, waterfall, mosaic, adjacent and perspective displays
43:00 – DVM
44:05 – Windows
44:53 – UART Serial decoder
46:27 – CRASH!
47:38 – SPI bus decoding
47:56 – Input Floating and Ground Connection
48:42 – Does the 12 bit give you more dynamic range?
49:31 – Display BUG or QUIRK?
50:10 – The DS1054Z Help system is still better
51:25 – Remote LXI LAN TESTED
53:47 – The probes are AWESOME! – Shootout with Siglent
56:49 – Conclusion
A tour of one of the electronics teaching labs and the makerspace at arguably the best electronics engineering university in Australia, UNSW. With Associate Professor Torsten Lehmann.
Forum: https://www.eevblog.com/forum/blog/university-of-nsw-electronics-lab-makerspace-tour/
00:00 – A tour of the UNSW electronic lab with Torsten Lehmann
02:57 – Why they chose the R&S RTB2000 oscilloscope
03:49 – Remotely interactive demo boards
04:52 – Does university teach practical skills any more?
08:41 – For the Siglent fanboys
10:50 – Soldering station
12:16 – Practical projects
15:13 – Thesis and learning to play an instrument analogy
16:39 – The 400kV High Voltage Lab
17:22 – Power systems laboratory
18:33 – Power electronics and drives laboratory
19:42 – Maker Space
A very interesting repair of an Agilent/Keysight U1273AX OLED display multimeter. It had two distinct unrelated faults. Ian Scott Johnston on The Amp Hour: https://theamphour.com/643-calibration-repair-with-ian-johnston/ Forum: https://www.eevblog.com/forum/blog/eevblog-1564-agilentkeysight-u1273ax-multimeter-repair/ 00:00 – Faulty Agilent / Keysight U1273AX OLED display multimeter 01:36 – Battery leakage, OF COURSE! 04:26 – Bottom of PCB 05:47 – The OLED display 10:09 – ...
Teardown of the new $389 12bit Rigol DHO800 oscilloscope!
Forum: https://www.eevblog.com/forum/blog/eevblog-1563-new-$389-12bit-rigol-dho800-scope-teardown/
EXCLUSIVE Unboxing and first impressions video: https://www.eevblog.com/2023/09/01/website-exclusive-rigol-hdo800-oscilloscope-unboxing/
HDO1000 Teardown: https://www.youtube.com/watch?v=qEpkVa_ysaw
HDO4000 Teardown: https://www.youtube.com/watch?v=W1Jl0rMRGSg
00:00 – Rigol’s NEW $389 DHO800 12 bit Oscilloscope!
02:43 – USB-C Powered
03:19 – Teardown of the Small Sparrow, and the DHO900
06:39 – Heatsink Removed and cost reduction
08:01 – Is the USB-C connector robust enough?
11:25 – Plastic moulding
12:13 – Back side of PCB
12:48 – PCB Comparison with HDO1000
13:56 – The ADC
15:13 – What is the missing memory?
15:42 – BOM cost INCREASE? Why?
16:40 – Bypass caps WTF. Madman Muntz is turning in his grave!
17:42 – Front end comparison with DHO1000 and HDO4000
20:00 – The Logic Analyser
21:15 – The Arbitrary Waveform Generator option in the DHO900
22:39 – PCB summary, and Dave doesn’t allow this type of production engineering!
22:31 – Serial boot dumping
25:56 – The boot Android O/S micro SD card
27:15 – Power consumption and summary
The Rigol HDO800 might very well be a revolution in the entry level oscilloscope market.
12bit, touch screen, HDMI, VESA mount, USB-C powered starting from from US$329
This is NUTS! And it’s super cute.
Are 8 bit scopes DEAD?
Teardown of THE 1980’s Boombox / Ghetto Blaster, the iconic Sharp GF-7600 That boombox from the iconic scene with John Cusak in Say Anything playing Peter Gabriel’s In Your Eyes Unboxing: https://www.youtube.com/watch?v=381wHMamsYQ Sony Walkman teardown: https://www.youtube.com/watch?v=a0B4CWfYE8I Forum: https://www.eevblog.com/forum/blog/eevblog-1562-the-1980s-boombox-teardown-sharp-gf-7600/ TEARDOWN PHOTOS:
Part 21 of the uSupply USB power supply design. An update on where the project got to and why. A look at the working unit, PCB and schematic. Design series Playlist: https://www.youtube.com/playlist?list=PLE37A0E6F75C37452 Forum: https://www.eevblog.com/forum/blog/eevblog-1561-usupply-usb-power-supply-part-20/
Tech Tip: How to use you Arbitrary Waveform Generator as a High Resolution DC Voltage Source! Siglent teardown: https://www.youtube.com/watch?v=Ijb_SzJ9Fs0 Forum: https://www.eevblog.com/forum/blog/eevblog-1560-tip-use-your-arb-gen-as-a-high-resolution-dc-voltage-source!/
Dave answers a Twitter question: How should I design a PCB trace to carry 80A of current, and can this be done on one PCB layer? The answer is, well, complicated. Let’s go down the PCB design rabbit hole of current rating PCB traces. Designing a PCB trace for 70-80A. How should I design the ...
More random mailbag! PocketFrog: https://standardmeasurement.us/ Omnifixo Maker’s Third Hand: https://kandaelectronics.com.au/products/omnifixo-of-m4-makers-third-hand NASA Red Crew: https://www.nasa.gov/feature/artemis-red-crew-team-helps-enable-successful-launch/ https://caberqu.com/ https://github.com/DanInvents/Rockit/ 00:00 – Mailbag 00:42 – PocketFrog USB Lab in your pocket 22:40 – Omnifixo OF-M4 Magnetic PCB Holder 28:32 – NASA Artemis 1 Red Crew – Billy Cairns 30:36 – Caberqu C2C USB-C Cable Tester 39:30 – Rocket Rocket-Operation ...
Review of the new Micsig SigOFIT Optical Fibre oscilloscope probe, including a practical demonstation of the incredible CMRR range of opticallly isolated probing of a 300V GaN transistor driver circuit. And a direct comparison with the HVP-70 high voltage differential probe to show you the incredible game changing difference optical fibre probes make. https://www.micsig.com/SigOFIT/ CMRR ...
To everyones shock, a SolaRoad cycleway installation in Maartensdijk in Utrecht province of the Netherlands only produed 26% of it’s projected output, AGAIN! When will this nonsense stop? Links:https://nos.nl/artikel/2484255-innovatief-zonnefietspad-bij-maartensdijk-levert-bijna-niets-op https://www.dutchnews.nl/2023/07/solar-bike-path-fails-to-meet-electricity-targets-again/ https://www.wattisduurzaam.nl/37168/energie-beleid/utrechts-zonnefietspad-op-koers-voor-40-van-beoogde-opbrengst/ https://www.wattisduurzaam.nl/16140/energie-opwekken/7-veelbelovende-innovaties-die-de-transitie-geen-steek-verder-helpen/ https://twitter.com/WattisDuurzaam/status/1525171198052782090 https://www.businessinsider.com/worlds-first-solar-road-turned-out-colossal-failure-2019-8 https://www.archpaper.com/2015/07/bike-path-pieces-skeptics-dismiss-dutch-solar-bike-path-solaroad-inefficient-cash-grab/ Solar roadways BUSTED Playlist: https://www.youtube.com/playlist?list=PLzET2ZHWnFA-6fnJu8WAhKmIruWDp8CQr Forum: https://www.eevblog.com/forum/blog/eevblog-1556-solaroad-solar-cycleway-fails-again!/
Has a Korean quantum research group cracked the holy grail of physics, an ambient temperature and pressure superconductor that will win them a Nobel prize and change humanity forever? Probably not. Dave completely busts the demo video of their LK-99 material with a pracitcal lab example, it’s such an embarrassing mistake you won’t believe it! ...
A teardown of a very interesting bit of optometry kit, a Shin Nippon NVISION K-5001 RefKeratometer (Auto Refractor Keratometer). It can measure the curvature of your cornea, and well as refractive error to diagnose near and far sightedness. Links: https://www.rexxam.co.jp/themes/eye-care/products/images/nvk5001/NvisionK5001.pdf https://www.academia.edu/59315264/Clinical_Evaluation_of_the_Shin_Nippon_NVision_K_5001_Grand_Seiko_WR_5100K_Autorefractor https://www.opticsforhire.com/blog/keratometer-optical-design/ Manual: https://www.yumpu.com/en/document/read/25018677/english-manual Forum: https://www.eevblog.com/forum/blog/eevblog-1554-optometrist-autorefractor-keratometer-teardown!/
Dave visists the world’s first commercial solar power station in White Cliffs, a small opal mining town in outback Australia. Built in 1981 and using 14 heliostatic tracking 5m diameter dishes, this concentrated thermal solar plant produced 25kW of power using a steam generator. Links: https://en.wikipedia.org/wiki/White_Cliffs_Solar_Power_Station Analysis report: https://eevblog.com/files/sustain_renew_solar_white_cliffs_project_report.pdf Mirror efficiency data: https://www.nrel.gov/docs/fy08osti/43695.pdf Heritage Listing: ...
Looking at a Ukrainian Starlink dish PCB that was DESTROYED by shrapnel! https://olegkutkov.me/ https://twitter.com/olegkutkov https://radionavlab.ae.utexas.edu/wp-content/uploads/2023/01/starlink_structure.pdf https://www.theverge.com/2021/11/11/22776563/spacex-starlink-rectangular-dish-router-mounting-internet-satellites https://i.blackhat.com/USA-22/Wednesday/US-22-Wouters-Glitched-On-Earth.pdf https://cdn.intechopen.com/pdfs/37016/InTech-Antenna_designs_with_electromagnetic_band_gap_structures.pdf https://onlinelibrary.wiley.com/doi/epdf/10.4218/etrij.2017-0197 00:00 – Ukrainian Starlink dish PCB that was DESTROYED by shrapnel! 15:18 – Snaptron Solderable tactile PCB Domes https://www.snaptron.com/ Forum: https://www.eevblog.com/forum/blog/eevblog-1551-destroyed-ukrainian-starlink-pcb!-mailbag/
Teardown the new Keysight E36731A Battery Emulator & Profiler https://www.keysight.com/us/en/product/E36731A/battery-emulator-and-profiler.html Forum: https://www.eevblog.com/forum/blog/eevblog-1550-keysight-e36731a-battery-emulator-teardown/ If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog Hi-Res Teardown Photos:
In this mailbag we take a look at some teardown artwork, USB power monitors, and a USB rechargeable multimeter. Grid Studios Teardown artwork: https://gridstudio.cc/ FNB58 USB power monitor: https://s.click.aliexpress.com/e/_Dlc6MlJ FNB48P: https://s.click.aliexpress.com/e/_DlifLtx https://ultraonedesign.com/ Fnirsi S1 Multimeter: https://s.click.aliexpress.com/e/_DC2hz2H Forum: https://www.eevblog.com/forum/blog/eevblog-1549-mailbag-teardown-art-usb-power-and-multimeter/ 00:00 – Mailbag 00:31 – Grid Studio Teardown artwork 06:06 – Fnirsi bonanza 07:46 – USB Power ...
The Moon Landing Hoax conspiricy theory BUSTED with Dave’s original proof. Dave does something no one else has done before – compare the original Apollo 17 16mm ascent camera footage to the Lunar Reconnaissance Orbiter (LRO) photos. Will footage from 40 years apart match up to confirm the moon landing? The Last Man On The ...
Digital logic circuit simplification using Karnaugh Maps. How to use a visual method to solve boolean algebraic equations and truth tables. Part 5 of the digital logic design tutorial series. Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHs2LwEdDwTp3n7mxb-MyBbo Forum: https://www.eevblog.com/forum/blog/eevacademy-digital-design-series-part-5-karnaugh-maps/ 00:00 – Part 5 of the digital logic design tutorial series 02:15 – Solving a logic truth table algebraically 04:17 – ...
Part 3. Tour of the NASA Canberra Deep Space Communications Complex at Tidbinbilla, with Richard Stephenson https://twitter.com/nascom1 Links: GaN solid state amplifier: https://ntrs.nasa.gov/api/citations/20190028651/downloads/20190028651.pdf Deep Space Network information https://descanso.jpl.nasa.gov/monograph/series10/03_Reid_chapt3.pdf https://descanso.jpl.nasa.gov/monograph/series10/04_Reid_chapt4.pdf https://descanso.jpl.nasa.gov/monograph/series10/05_Reid_chapt5.pdf Air exclusion zone: https://www.avsef.gov.au/sites/default/files/2023-03/documents/nsw-act-nat_r430_tidbinilla_increase_in_transmitting_power_0.pdf Maser amplifier: https://ntrs.nasa.gov/api/citations/19940025169/downloads/19940025169.pdf X band uplink: https://ipnpr.jpl.nasa.gov/progress_report/42-87/87O.PDF 34M Beam Waveguide antenna: https://descanso.jpl.nasa.gov/monograph/series4/Mono4_Ch6.pdf https://descanso.jpl.nasa.gov/monograph/series4/Mono4_Ch7.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1547-contacting-the-voyager-2-space-probe/ 00:00 – Tour of the NASA ...
Part 2 – PINGing the Voyager 2 space probe. Inside the control room at the Canberra Deep Space Communications Complex (CDSCC) while receving the Voyager 2 signal after a 30 hour PING time. A detailed look at the receiver control system screens. Follow Richard Stephenson on Twitter: https://twitter.com/nascom1 Forum: https://www.eevblog.com/forum/blog/eevblog-1547-contacting-the-voyager-2-space-probe/
How do you contact the Voyager 2 space probe? PART 1: A detailed explanation by Richard Stephenson from the NASA Canberra Deep Space Communications Complex in Canberra on how the 70m DSS-43 dish at the CDSCC is used to still contact the Voyager 2 probe. You can follow Richard on Twitter: https://twitter.com/nascom1 NOTE: This video ...
Teardown of a professional military grade industrial 4K DLP projector. The build quality and over-engineering is just nuts. This Projection Design F35 WQXGA Projector costs $30k And a look at how Digital Light Processing micromirror devices work under the microscope. Links: https://www.projectorcentral.com/pdf/projector_spec_5408.pdf https://www.projectorcentral.com/pdf/projector_manual_5408.pdf https://www.ti.com/lit/ds/symlink/dlp9000.pdf https://www.ti.com/lit/ml/dlpb010e/dlpb010e.pdf https://www.eenewseurope.com/en/from-projectors-to-heads-up-displays-how-dlp-works/ http://www2.optics.rochester.edu/workgroups/cml/opt307/spr05/john/ Forum: https://www.eevblog.com/forum/blog/eevblog-1546-insane-$30k-4k-panoramic-dlp-projector-teardown/
The world’s fastest oscilloscope, the Rohde & Schwarz MXO4 teardown! Wow, this is an impressive beast in more ways than one.
ADC: https://www.ti.com/lit/ds/slvsdr3c/slvsdr3c.pdf
FPGA: https://www.digikey.com/en/products/detail/amd-xilinx/XCZU7EG-1FBVB900I/7034695
Photos:
Forum: https://www.eevblog.com/forum/blog/eevblog-1545-worlds-fastest-oscilloscope-mxo4-teardown/
Hi-res teardown photos:00:00 – Rohde & Schwarz MXO4 The world’s fastest oscilloscope
00:55 – The handle doesn’t cut the mustard these days
02:02 – The production flap
03:54 – ALL scopes should use this power connection!
04:32 – This is gorgeous, and it just gets better.
06:38 – Look at it! Look at it!
08:14 – RF goodness
08:35 – Dual 100MHz Arb generator
08:54 – Best probe interface solution ever
09:55 – The world’s best low noise fan?
10:53 – Main PCB
13:17 – Inside the front end RF can
19:48 – The MXO4-EP ASIC
21:30 – External trigger system
22:43 – 12bit ADC
23:29 – The $3400 Xilinx Zynq FPGA and applications processor.
26:08 – I’m now uploading videos natively on Twitter
Unboxing and testing: https://www.youtube.com/watch?v=txPxo4TA0i4
Let’s BUST the new Platio Solar Pavement installation in the Netherlands using thier OWN production data on launch day! LOL PLUS a Solar Roadways UPDATE!
If you find my videos useful you may consider supporting the EEVblog on Patreon
00:00 – Platio Solar Pavement in the Netherlands BUSTED!
02:15 – The launch day unveiling video
03:43 – The location in Groningen. Absolutely nowhere else for panels, LOL
05:41 – We’ve BUSTED Platio before! The Spanish installation.
06:41 – BUSTING the numbers with DaveCAD
11:17 – The numbers are just embarrassing!
12:58 – Embodied energy anyone?
14:45 – Anyone remember the Dutch Solaroad project?
16:03 – Solar Freakin Roadways UPDATE
17:29 – ANOTHER ONE in the Netherlands? SERIOUSLY?
18:55 – I was WRONG, it’s worse, way worse.
Reference Links: https://platiosolar.com/europes-new-solar-footpath-from-recycled-plastic-waste-that-generates-electricity/
https://www.pv-magazine.com/2023/04/05/dutch-city-installs-solar-footpath/ https://www.oogtv.nl/2023/03/zonnevoetpad-op-europapark-levert-veel-energie-op/ https://www.youtube.com/watch?v=_L6n5hX3J8E
Location: https://www.google.com/maps/@53.2065629,6.5886968,397m/data=!3m1!1e3
Cost: https://www.pv-magazine.com/2020/04/23/solar-pavement-for-outdoor-applications/
PVoutput reference site: https://pvoutput.org/list.jsp?p=1&id=97903&sid=86280&gs=0&v=0&o=date&d=desc
Spanish Platio BUSTED video: https://www.youtube.com/watch?v=RIiiGReUZ3A
EEVblog2 Platio video short: https://www.youtube.com/watch?v=Kw3ZiQY2nKM
Solar Roadways StartEngine: https://www.startengine.com/offering/solar-roadways
Solar Roadways Webcam: https://solarroadways.click2stream.com/
Solaroad in the Netherlands FAIL photos: https://twitter.com/Stop_Solaroad/status/1189216271591772160
atching up with Steve Sanghi who was Microchip CEO for 31 years, now Executive Chair.
Check out his new book, Up and to the Right. How Microchip was built into one of the biggest and most pofitable chip companies in the world.
This is copied from The Amp Hour podcast, as it shuld be of great interest to EEVblog viewers.
In this episode we discussed:
The early microcontrollers, ROM, EPROM, EEPROM, FLASH.
Semiconductor Fab’s and locations.
How the US Government CHIPS act is a golden handcuffs trap.
US/China rhetoric.
What really happened durign the covid supply chain crisis.
How 90% of medical devices use Microchip parts.
Lead times.
Respect for the chip manufacturers and supply chains.
Just-In-Time becomes Just-In-Case. How the Toyota production system works and how it had to change. The impacts of a potential war in Taiwan.
How does it make sense to make thousands of part variants?
The secret to making part varients.
Why Microchip chose MIPS vs ARM.
Atmel didn’t make any money!
Pricing discipline.
How buying Atmel almost didn’t happen, and how Dialog Semiconductor goofed it.
Draconian NDA terms.
Atmel was bloated.
RISC-V plans.
Customer Driven Obsolescence.
Foundry vs In-House limitations.
Open Source FPGA tools?
Third party tool support.
Why not offer free optimised compilers?
It’s all about black swan events, down cycles, pointy haired bosses, and how All your Cost Bases Belong To Me.
Hobbyist vs professionals.
How Microchip is the largest aerospace chip maker in the world.
Nothing leaves earth without a Microchip part in it.
Radiation hardended parts.
Market value profitability.
Will Microchip ever get acquired.
Strained US vs China relations.
Forum: https://www.eevblog.com/forum/microcontrollers/talking-with-steve-sanghi-ceo-of-microchip-for-31-years/
A look at the $30 Fnirsi HS-01 USB PD Portable soldering iron. It is better than the E-Design Miniware TS-80P? https://s.click.aliexpress.com/e/_DFykRxj
If you find my videos useful you may consider supporting the EEVblog on Patreon
Forum: https://www.eevblog.com/forum/blog/eevblog1543-mailbag-fnirsi-hs-01-usb-portable-soldering-iron/
00:00 – The $30 Fnirsi HS-01 USB soldering iron
01:20 – The tips. Hakko T12?
02:54 – Sponge accident!
03:11 – This is a bit dodgy
04:08 – Soldering capacity tests
05:50 – Comparison with the Miniware TS-80P
07:49 – Anti-roll design
Highlights from a decades worth of diving the famous EEVblog dumpster! A compilation video. If you find my videos useful you may consider supporting the EEVblog on Patreon
Forum: https://www.eevblog.com/forum/blog/eevblog-1542-a-decade-of-dumpster-diving/
Searching for another blown SMD component.
Twitter thread: https://twitter.com/PoiSolutionsLLC/status/1652769442080620549
00:00 – Failed Hantek 2000 handheld oscilloscope
02:08 – PCB location is your best clue
04:21 – Voltage regulator maybe?
06:01 – You gotta ask yourself, do I feel lucky? Well, do you, punk?
07:38 – Dialing in that google foo
08:20 – Winner Winner Chicken Dinner
09:54 – Test Pins
11:17 – Can you play spot the difference?
13:43 – Category Search
https://datasheet.lcsc.com/lcsc/2001131003_Shikues-BRCL3130ME_C475652.pdf https://datasheet.lcsc.com/lcsc/2201121900_Shikues-SKCL3130ME_C2941741.pdf
Is an $80 combo oscilloscope/multimeter any good? A look at the Zotech ZT-702S, with street price around US$60 https://s.click.aliexpress.com/e/_DFsZNAV
If you find my videos useful you may consider supporting the EEVblog on Patreon
Forum: https://www.eevblog.com/forum/blog/eevblog-1540-the-$80-zotek-zt-702s-osciloscope-multimeter-review/
Which microcontroller is better for the new project, the ST ARM STM32L or the Microchip PIC24F. Datasheet power consumption comparisons. All may not be as it appears… Part 3 of the new project series. If you find my videos useful you may consider supporting the EEVblog on Patreon
Forum: https://www.eevblog.com/forum/blog/eevblog-1539-new-project-part-3-stm32l-vs-pic24f/
Part 2 in the new project design series, selecting a microcontroller. 32 Bit Timers, Real Time Clocks, and LCD animation. If you find my videos useful you may consider supporting the EEVblog on Patreon
Forum: https://www.eevblog.com/forum/blog/eevblog-1538-new-project-part-2-microcontroller-selection/
00:00 – Searching for a microcontroller, the requirements
02:12 – 32 bit Timer
04:22 – Supplier parametric search is useless in this case
06:05 – Let’s ask ChatGPT and watch it FAIL, Atmel ATmega
08:47 – PIC 18F series?
09:41 – How about TI MSP430?
11:52 – PIC 24F series
13:14 – LCD animation? I’m SOLD!
17:20 – But can we buy it? Is Chipageddon over?
20:03 – Dual PCB footprints
21:14 – Internal Timers and clock sources
Working on a new project, Dave failed at finding an off-the-shelf enclosure, can you find one? https://eevblog.com/wiki/
Forum: https://www.eevblog.com/forum/blog/eevblog-1537-project-enclosure-search-fail/ If you find my videos useful you may consider supporting the EEVblog on Patreon
Can we find a decent $50 analog oscilloscope on ebay? What about a decent digital storage oscilloscope for less than half the price of a new Rigol?
Forum: https://www.eevblog.com/forum/blog/eevblog-1536-how-to-find-a-$50-oscilloscope-on-ebay/
Is the AI Machine Learning based DeepPCB autorouter better than Dave at routing a simple double sided PCB? Let’s try it! TLDR; It sucks. Humans for the win. If you find my videos useful you may consider supporting the EEVblog on Patreon
Forum: https://www.eevblog.com/forum/blog/eevblog-1535-deeppcb-ai-autorouting-tested!/
The Test and Measurement Alliance have announced an effective ban on x1/x10 switchable scope probes with all new oscilloscopes going forward from Q3 2023. Do you agree? Signatories include practically every oscilloscope manufacturer! Keysight, Tektronix, Rohde & Schwarz, Lecroy, GW Instek, Siglent, Rigol, National Instruments, Hantek, Owon, Micsig and PicoScope.
https://tm-alliance.org/blog/2023-03-31/
If you find my videos useful you may consider supporting the EEVblog on Patreon:
Forum: https://www.eevblog.com/forum/blog/eevblab-111-the-tma-banning-x1x10-switchable-probes/
2023 brings us Solar Freakin’ RAILways! from Swiss start-up Sun-Ways A dumber idea than Solar Roadways?
Forum: https://www.eevblog.com/forum/blog/eevblog-1534-solar-freakin-railways!/
If you find my videos useful you may consider supporting the EEVblog on Patreon
00:00 – Solar Freakin’ RAILways!
00:56 – Yes, Solar Freakin’ Roadways are STILL going!
02:53 – EVERY solar roadways startup has failed, epicly.
05:12 – Let’s watch the promo video!
09:05 – Showstoppers as far as the eye can see
10:14 – You NEVER go full Brusaw! (Melting snow!)
11:16 – Err, dust anyone?
14:23 – Let’s look at the location. Is there are a better place to put solar panels?
16:49 – The South Korean’s have a solution
17:32 – Stop it. Just stop it. But the grift is real.
How to estimate the battery life of a product. In this example, the BM786 multimeter. How to measure battery current accurately, avoiding Burden voltage, and looking at battery datasheets characteristic curves. The difference between alkaline and lithium primary batteries. If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog
Forum: https://www.eevblog.com/forum/blog/eevblog-1533-how-to-estimate-product-battery-life/
00:00 – What is the battery life of the BM786 multimeter?
01:55 – DaveCAD – Linear Regulators are Constant Current loads.
03:49 – The Rohde & Schwarz NGA100 PSU is pretty schmick
05:00 – The Burden Voltage problem
06:34 – Current consumption in AC mode and backlight
07:58 – The battery cutout voltage and hysteresis
08:48 – Why do multimeters waste battery capacity?
09:21 – Alkaline Battery Datasheet time
10:06 – DC-DC Converters are Constant Power loads
12:00 – How good are Energizer Lithium batteries?
14:26 – Temperate effect on lithium batteries
15:30 – Different types of characteristic curves
16:36 – Extraporlating the curve
18:46 – Conclusion
Will the human perceived quality of the AI ChapGPT output eventually reach an inflection point where the quality decreases because there is now too much AI produced content to learn from?
WiGL have raised another $2.8M on StartEngine for their mobile phone charging wireless power grift, in addition to the $5M they raised a year ago. And yep, it’s STILL using off the shelf technology, but this time with a new partner PowerCast!
https://www.startengine.com/offering/wigl
Forum: https://www.eevblog.com/forum/blog/eevblog-1532-another-$2-8m-wigl-wireless-power-grift/ Busted article by Caleb Naysmith
The 5 biggest StartEngine successes by Caleb Naysmith
Powercast confirm the energy receive levels for the 3W EIRP transmitter used: https://www.powercastco.com/frequently-asked-questions/
If you find my videos useful you may consider supporting the EEVblog on Patreon
Can ChatGPT generate all the code for my Macgyver Project? Does ChatGPT understand what 7 segment displays and shift registers are, and can it integrate that knowledge with Arduino programming? Let’s find out! This is Part 3 of the Magyver project.
If you find my videos useful you may consider supporting the EEVblog on Patreon
Forum: https://www.eevblog.com/forum/blog/eevblog-1531-can-chatgpt-generate-all-the-code-for-my-macgyver-project/
The most amazing feature of the new Siglent SDS2000X HD 12 Bit Oscilloscope was surprising! Teardown time.
If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog
Forum: https://www.eevblog.com/forum/blog/eevblog-1530-siglent-sds2000x-hd-12-bit-oscilloscope-teardown/
Unboxing, first impression, and some experiments with the new Rohde & Schwarz MXO4 12bit oscilloscope. Is the new MXO-EP ASIC faster than the Keysight Megazoom IV ASIC?
If you find my videos useful you may consider supporting the EEVblog on Patreon
https://www.rohde-schwarz.com/us/products/test-and-measurement/oscilloscopes/rs-mxo-4-oscilloscope_63493-1164992.html
Brochure: https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_common_library/dl_brochures_and_datasheets/pdf_1/MXO_4_bro_en_3609-8473-12_v0402.pdf
A wheelie bin full of medical devices found in the dumpster! If you find my videos useful you may consider supporting the EEVblog on Patreon
Forum: https://www.eevblog.com/forum/blog/eevblog-1528-i-found-a-bin-full-of-dumpster-medical-devices!/
This Ebay Toshiba T1000LE vintage DOS In ROM laptop repair turned out looking promising until, well, it didn’t…
Forum: https://www.eevblog.com/forum/blog/eevblog-1527-toshiba-t1000le-dos-vintage-laptop-repair-hell/
00:00 – THE laptop that cointed the term Notebook, the Toshiba T1000 series
05:46 – It obsoleted the Tandy 100 and Tandy 200
07:00 – Powering up
10:16 – Opening up had a few issues – OOPS
12:12 – The first suspect
17:55 – Bad caps?
20:50 – Suspect process
23:18 – Backup battery SRAM problem
24:12 – Thermal camera
26:32 – Extra sneaky PSU
33:27 – Under the microscope, this looks BAD!
37:00 – Yuck!
44:28 – BUSTED
I found 283 mains double adpters in the dumpster. What happens if you put them all in series with a 2kW load? I’m glad you asked!
If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog
00:00 – I found 283 double adapters in the dumpster!
00:58 – We goofed it already
02:06 – Cable capaciitance
03:14 – Testing a 2kW load!
05:50 – DaveCalc, power loss per adapter
07:37 – Internal wiring and Teardown
09:56 – What is the resistance?
11:23 – Thermal camera test
14:06 – Ohmic Meditation Dumpster
Forum: https://www.eevblog.com/forum/blog/eevblog-1526-i-put-283-double-adapters-in-series-with-a-2kw-load/
If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog
00:00 – Comissioned component artwork
https://www.bad-dog-designs.co.uk/
01:48 – 1.3GHz DIY FET probe
https://hackaday.io/project/184924-diy-13-ghz-fet-probe https://github.com/makerprobe/FETProbe_tiny
07:53 – The uSupply makes an apperance!
09:14 – Ron Demcko sends in some goodies
14:23 – Mysterious Patent
19:10 – USB Power Injector Crowd Supply kit https://www.crowdsupply.com/board-outline
21:25 – Elimo Engineering electronic business card
https://elimo.io/
23:29 – Ambit Infusion Pump Teardown
30:20 – Metrawatt M2037 Multimeter Teardown
Forum: https://www.eevblog.com/forum/blog/eevblog-1525-commisioned-mailbag/
Youtube:
Checking out the new 10 cent WCH CH32V003 48MHz RISC V processor demo board and the MounRiver Eclipse IDE. Getting to blinky. The CH32V003 is a pin-for-pin alternative to the STM8S003 at 1/3rd the price, with more features.
If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog
http://www.wch-ic.com/products/CH32V003.html http://www.wch-ic.com/products/categories/47.html?pid=5 https://www.tindie.com/products/adz1122/ch32v003-risc-v-mcu-development-board/
http://www.mounriver.com/download
00:00 – WCH CH32V003 RISC V Processor
02:01 – CH32V003F4P6 Eval board
03:00 – Pin-for-pin replacement for the ST STM8S003
04:30 – Datasheet and reference manual
05:24 – MounRiver Eclipse IDE
07:13 – It just worked
10:58 – Open Source GNU RISC V Cross Compiler
11:38 – Download and flash a LED, maybe…
13:51 – Save the file first, dummy.
15:26 – All the includes and headers
17:37 – But can you buy them?
18:11 – How fast can the pin toggle?
Forum: https://www.eevblog.com/forum/blog/eevblog-1524-the-10-cent-risc-v-processor-ch32v003/
Youtube:
Stopping the robot uprising by tearing down a Samsung SR8980 robotic cleaning robot found in the dumpster.
Forum: https://www.eevblog.com/forum/blog/eevblog-1523-dumpster-samsung-cleaning-robot-teardown/
Youtube:
Part 2 of the BM786 troubleshooting repair, proving it’s the processor at fault.
Forum: https://www.eevblog.com/forum/blog/eevblog-1520-troubleshooting-a-faulty-bm786-multimeter/
Youtube:
ChatGPT has changed everything in the space of a month.
2023 will be the year of Conversational Search and computer code generation.
And how MidJourney and DALL-E have rendered artists obsolete, or at least turned ANYONE into a great and capable artist.
This video thumbnail was generated in seconds by Dave who has ZERO artistic skills.
Why The Chaser is setting up a futile paywall to stop the AI invastion.
Youtube:
What is Common Mode Rejection Ratio (CMRR) and how to measure it on a high voltage differential probe or differential amplifier.
Youtube:Extended 30min version: https://www.youtube.com/watch?v=4gi2B3LrCww
Differential Probe How It Works: https://www.youtube.com/watch?v=GOlgaEK2Hsk
High Voltage Probe reverse engineering: https://www.youtube.com/watch?v=GOk1BYKSsOI&t=2s
Forum: https://www.eevblog.com/forum/blog/eevblog-1521-how-to-measure-differential-probe-cmrr/
Looking at a faulty returned BM786 multimeter. Warning: Some components were harmed in the making of this video.
Forum: https://www.eevblog.com/forum/blog/eevblog-1520-troubleshooting-a-faulty-bm786-multimeter/
Youtube:
Hacking a dumpster Sonos Play 5 Gen 1 speaker to remove all the evil software locking and turn it into a dumb speaker with just line-in and basic wireless Bluetooth. Integrating a new Fosi Audio ZX-TB21 2+1 amplifier. https://amzn.to/3USD7xQ
Youtube:
Sonos, the Juicero of wireless speakers: https://www.youtube.com/watch?v=lLyjvXAJcLM
Forum: https://www.eevblog.com/forum/blog/eevblog-1519-free-your-sonos-speaker!-(hack)/
Depotting, teardown, and some reverse engineering analysis of the 400W Hoymiles solar microinverter. https://www.hoymiles.com/products/microinverter/
Hoymiles vs Enphase microinverter review: https://www.mcelectrical.com.au/hoymiles-microinverter-review/
Forum: https://www.eevblog.com/forum/blog/eevblog-1518-hoymiles-solar-microinverter-teardown/
Youtube:Odysee:
Installation of a Reclaim Heat Pump hot water system replacing a high efficiency gas tank hot water system. And anlysis of the results. Is a heat pump hot water system more efficient than a gas hot water system?
Forum: https://www.eevblog.com/forum/blog/eevblog-1517-heat-pump-hot-water-install-analysis/
Youtube:Odysee:00:00 – The existing gas tank hot water system
03:11 – Thermal IR camera measurements
05:16 – Installation of the new Reclaim heat pump hot water tank
08:20 – The pipework and tempering valve explained
11:55 – Water temperature measurements
12:32 – Standby power consumption
13:11 – Analysis of results after 9 days
18:58 – What is the efficiency of a gas tank hot water system?
20:35 – Gas vs heat pump energy usage
21:17 – 9 days data
25:03 – Estimating the Coefficient of Performance (COP)
29:44 – Tank thermal statification
Mailbag Bonanza!
Send stuff to: EEVblog Mailbag PO Box 7949 Norwest NSW 2153 AUSTRALIA
Forum: https://www.eevblog.com/forum/blog/eevblog-1516-mailbag-bonanza!/
00:00 – Mailbag Bonanza!
02:24 – Australian Signals Directorate 75th Aniversary 50 Cent Coin
05:07 – One-Shot Relay!
07:20 – Olight Torch Bonanza! https://www.olightstore.com.au/s/P7TWZN
08:20 – Olight Marauder 2 14,000 lumen torch
18:29 – Olight RN1500 Bike Light
23:02 – Olight Perun 2 Headlamp
29:54 – Dreo Macro Max S HEPA Air Purifier https://www.dreo.com/products/dreo-macro-max-s-air-purifier
38:34 – Does it produce any dangerous Ozone?
41:19 – Let’s check out the FCC report and teardown photos
46:01 – Hoymiles solar microinverters! https://www.hoymiles.com/au/products/microinverter/
51:06 – Is it potted?
55:31 – Noyafa NF8601S Ethernet cable tracer https://www.noyafa.com/products/tdr-cable-length-tester-nf-8601-s.html
Youtube:Odysee:
Upgrading the dumpster Tektronix TDS540D oscilloscope with an LCD had a few issues… Ebay listing if you want it: https://www.ebay.com.au/itm/225251897379 Forum: https://www.eevblog.com/forum/blog/eevblog-1515-dumpster-tektronix-tds540d-500mhz-oscilloscope-lcd-replacement/ Youtube:
A surprising dumptser diving find that might prove we live in a simulation. A Sony GTK-X1BT bluetooth enabled party jukebox Hi-Fi speaker system. Forum: https://www.eevblog.com/forum/blog/eevblog-1513-dumpster-tossers-have-no-shame/ Youtube: Odysee:
A surprising dumptser diving find that might prove we live in a simulation. A Sony GTK-X1BT bluetooth enabled party jukebox Hi-Fi speaker system. Forum: https://www.eevblog.com/forum/blog/eevblog-1513-dumpster-tossers-have-no-shame/ Youtube: Odysee:
A surprising dumptser diving find that might prove we live in a simulation. A Sony GTK-X1BT bluetooth enabled party jukebox Hi-Fi speaker system. Forum: https://www.eevblog.com/forum/blog/eevblog-1513-dumpster-tossers-have-no-shame/ Youtube: Odysee:
Comparing gas hot system to a heat pump hot water system before I install a Reclaim 415L heat pump hot water system at home to use my excess solar energy. Forum: https://www.eevblog.com/forum/blog/heat-pump-hot-water-system-vs-gas-hot-water/
Why add bypass capacitors on a PCB like THIS? Answering a Twitter question: https://twitter.com/furan/status/1586889993234038786 https://www.vgamuseum.info/index.php/cpu/item/993-s3-supersavage-ixc-sdr Forum: https://www.eevblog.com/forum/blog/eevblog-1512-why-bypass-your-pcb-like-this/ Youtube: Odysee:
Why add bypass capacitors on a PCB like THIS? Answering a Twitter question: https://twitter.com/furan/status/1586889993234038786 https://www.vgamuseum.info/index.php/cpu/item/993-s3-supersavage-ixc-sdr Forum: https://www.eevblog.com/forum/blog/eevblog-1512-why-bypass-your-pcb-like-this/ Youtube: Odysee:
Why add bypass capacitors on a PCB like THIS? Answering a Twitter question: https://twitter.com/furan/status/1586889993234038786 https://www.vgamuseum.info/index.php/cpu/item/993-s3-supersavage-ixc-sdr Forum: https://www.eevblog.com/forum/blog/eevblog-1512-why-bypass-your-pcb-like-this/ Youtube: Odysee:
The magic smoke was released from my solar analytics monitoring system. What was the culprit? Also Dumb Dave™ gets ZAPPED! Forum: https://www.eevblog.com/forum/blog/eevblog-1511-my-solar-analytics-system-failed/ Youtube: Odysee:
The magic smoke was released from my solar analytics monitoring system. What was the culprit? Also Dumb Dave™ gets ZAPPED! Forum: https://www.eevblog.com/forum/blog/eevblog-1511-my-solar-analytics-system-failed/ Youtube: Odysee:
The magic smoke was released from my solar analytics monitoring system. What was the culprit? Also Dumb Dave™ gets ZAPPED! Forum: https://www.eevblog.com/forum/blog/eevblog-1511-my-solar-analytics-system-failed/ Youtube: Odysee:
HUGE SURPRISE inside the new low end $699 Rigol 12bit low noise HDO1000 oscilloscope! Hacking forum thread: https://www.eevblog.com/forum/testgear/hacking-the-hdo1khdo4k-rigol-12-bit-scope/ Forum: https://www.eevblog.com/forum/blog/eevblog-1510-$699-rigol-12bit-hdo1000-teardown-woah/ Youtube: Odysee:
HUGE SURPRISE inside the new low end $699 Rigol 12bit low noise HDO1000 oscilloscope! Hacking forum thread: https://www.eevblog.com/forum/testgear/hacking-the-hdo1khdo4k-rigol-12-bit-scope/ Forum: https://www.eevblog.com/forum/blog/eevblog-1510-$699-rigol-12bit-hdo1000-teardown-woah/ Youtube: Odysee:
HUGE SURPRISE inside the new low end $699 Rigol 12bit low noise HDO1000 oscilloscope! Hacking forum thread: https://www.eevblog.com/forum/testgear/hacking-the-hdo1khdo4k-rigol-12-bit-scope/ Forum: https://www.eevblog.com/forum/blog/eevblog-1510-$699-rigol-12bit-hdo1000-teardown-woah/ Youtube: Odysee:
A look at and teardown of three different types of Australian made high security Ross safe locks. Ross 700 high security key lock Ross 1000 Electronic keypad lock Ross 1000 Bluetooth lock https://rosslocks.com.au/ 00:00 – Mailbag 01:32 – Three different types of safe locks 05:54 – Which lock type is best? 06:59 – Visual and ...
A look at and teardown of three different types of Australian made high security Ross safe locks. Ross 700 high security key lock Ross 1000 Electronic keypad lock Ross 1000 Bluetooth lock https://rosslocks.com.au/ 00:00 – Mailbag 01:32 – Three different types of safe locks 05:54 – Which lock type is best? 06:59 – Visual and ...
A look at and teardown of three different types of Australian made high security Ross safe locks. Ross 700 high security key lock Ross 1000 Electronic keypad lock Ross 1000 Bluetooth lock https://rosslocks.com.au/ 00:00 – Mailbag 01:32 – Three different types of safe locks 05:54 – Which lock type is best? 06:59 – Visual and ...
Is an $800 oscillscope overkill for a hobbyist? At what level does an oscilloscope become “overkill”? Forum: https://www.eevblog.com/forum/testgear/is-a-rigol-mso5000-overkill-for-a-hobbyist/
Is an $800 oscillscope overkill for a hobbyist? At what level does an oscilloscope become “overkill”? Forum: https://www.eevblog.com/forum/testgear/is-a-rigol-mso5000-overkill-for-a-hobbyist/
Is an $800 oscillscope overkill for a hobbyist? At what level does an oscilloscope become “overkill”? Forum: https://www.eevblog.com/forum/testgear/is-a-rigol-mso5000-overkill-for-a-hobbyist/
After the 3+ year experiment that started in March 2019 we FINALLY have some alkaline battery leakage failures! Did the Duracell’s fail? That pesky potassium hydroxide forming potassium carbonate. Youtube: Battery leakage video playlist: https://www.youtube.com/playlist?list=PL24OiKqd2iN9n2Xk_7Y0gN5t44vtBud_C Forum: https://www.eevblog.com/forum/blog/eevblog-1508-we-finally-got-alkaline-battery-leakage!/
After the 3+ year experiment that started in March 2019 we FINALLY have some alkaline battery leakage failures! Did the Duracell’s fail? That pesky potassium hydroxide forming potassium carbonate. Youtube: Battery leakage video playlist: https://www.youtube.com/playlist?list=PL24OiKqd2iN9n2Xk_7Y0gN5t44vtBud_C Forum: https://www.eevblog.com/forum/blog/eevblog-1508-we-finally-got-alkaline-battery-leakage!/
After the 3+ year experiment that started in March 2019 we FINALLY have some alkaline battery leakage failures! Did the Duracell’s fail? That pesky potassium hydroxide forming potassium carbonate. Youtube: Battery leakage video playlist: https://www.youtube.com/playlist?list=PL24OiKqd2iN9n2Xk_7Y0gN5t44vtBud_C Forum: https://www.eevblog.com/forum/blog/eevblog-1508-we-finally-got-alkaline-battery-leakage!/
Talking about the history of electricity and physics with Kathy Joseph from Kathey Loves Physics, and her new book: The Lightning Tamers: True Stories of the Dreamers and Schemers Who Harnessed Electricity and Transformed Our World. Also talk about her youtube channel and script and book writing process. Youtube: Odysee: LINKS: Website:https://bit.ly/GoKathyLovesPhysics The Lightning Tamers ...
My home takes 120W phantom standby power. Let’s do a complete audit and see what is consuming the most power, and how it can be reduced. Forum: https://www.eevblog.com/forum/blog/eevblog-1505-120w-home-phantom-power-audit-time!/ Youtube:
A very cool bit of electronics failure mode analysis that you missed at the 2022 Tesla AI Day presentation. And it’s got nothing to do with the Optimus Tesla Bot! A look at how ceramic capacitor vibration caused mechnical failure in a MEMS oscillator. Youtube: AI day video: https://www.youtube.com/watch?v=ODSJsviD_SU Forum: https://www.eevblog.com/forum/blog/eevblog-1504-the-cool-thing-you-missed-at-tesla-2022-ai-day/ Ceramic capacitor cracking: https://www.youtube.com/watch?v=QgKY5QWehME ...
Teardown of the new Rigol HDO4000 12bit ultra low noise oscilloscope Forum: https://www.eevblog.com/forum/testgear/rigol-hdo1000-and-hdo4000-12bit-oscilloscopes-launched-in-china/ High Res Teardown Photos:
Running through the numbers to see if home battery storage is viable on my home. And comparing Tesla Powerwall, Enphase IQ Battery, BYD LVS, and Greenbank battery pricing. All my solar videos: https://www.youtube.com/playlist?list=PLvOlSehNtuHvPZ1-dDC449w_r2M0R4jtc Forum: https://www.eevblog.com/forum/blog/eevblog-1502-is-home-battery-storage-financially-viable/ Youtube: Odysee:
Running through the numbers to see if home battery storage is viable on my home. And comparing Tesla Powerwall, Enphase IQ Battery, BYD LVS, and Greenbank battery pricing. All my solar videos: https://www.youtube.com/playlist?list=PLvOlSehNtuHvPZ1-dDC449w_r2M0R4jtc Forum: https://www.eevblog.com/forum/blog/eevblog-1502-is-home-battery-storage-financially-viable/ Youtube: Odysee:
Running through the numbers to see if home battery storage is viable on my home. And comparing Tesla Powerwall, Enphase IQ Battery, BYD LVS, and Greenbank battery pricing. All my solar videos: https://www.youtube.com/playlist?list=PLvOlSehNtuHvPZ1-dDC449w_r2M0R4jtc Forum: https://www.eevblog.com/forum/blog/eevblog-1502-is-home-battery-storage-financially-viable/ Youtube: Odysee:
Rigol’s new HDO4000 Series ultra low noise 12bit oscilloscope with Centaur chipset. Unboxing, first impression, and noise measurements. Forum: https://www.eevblog.com/forum/blog/eevblog-1501-rigol-hdo4000-low-noise-12bit-oscilloscope-unboxing-first-impre/
EXCLUSIVE video only available on my Odysee channel! – Sharp GF-7600 Boombox unboxing. THE Boombox of the 1980’s!
Automatic AC transfer switches are pretty cool devices. A look at what they do, a practical demo, teardown, and then reverse engineering to explain how it does it. Bonus look at how my automated home battery backup system will work. 00:00 – Automatic AC Transfer switch 02:05 – How I’m powering my home fridges from ...
Teardown of the EcoFlow Delta Pro 3.6kWh portable/home LiFePO4 battery solar inverter/generator. Back in the old EEVblog garage! US: https://us.ecoflow.com/products/delta-pro-portable-power-station?aff=349 Australia: https://au.ecoflow.com/products/delta-pro-portable-power-station?aff=8 Use coupon code EFPROEEV100 for $100 off until October 31st Youtube: Odysee: EcoFlow factory tour: https://www.youtube.com/watch?v=WxacBC6iISI Forum: https://www.eevblog.com/forum/blog/eevblog-1499-ecoflow-delta-pro-3-6kwh-portable-battery-teardown!/ Teardown Photos:
The Transpod FluxJet is Hyperloop based on the “New physics” of “Veillance Flux”! And plasma arc power transfer! $550M to create a reduced pressure Fluxjet link from Calgary to Edmonton in Canada. It’ll only cost $18B, what a bargain! And Sydney to Brisbane? Err, yeah, ok, let’s look at that… Youtube: https://www.transpod.com/ http://edition.cnn.com/travel/article/fluxjet-transpod-canada-hyperloop/index.html Feasibility study: ...
RIP this Fluke 3000 wireless multimeter. Thanks Energizer for the alkaline battery leakage! Youtube: PART 2 Repair: https://www.youtube.com/watch?v=qmcSEJehqZM Energizer battery leakage in liquid form: https://www.youtube.com/watch?v=YZCPlbOuxJY Forum: https://www.eevblog.com/forum/blog/eevblog-1497-rip-fluke-thanks-energizer-not/
Meet 13yo Josh, the winner of the Jaycar $5 scope, and designer of Framework laptop boards! https://lectronz.com/products/uart-expansion-card His Patreon: https://www.patreon.com/i2clabs More boards: https://imgur.com/a/SPRrFV7 Youtube: 00:00 – Meet Josh 03:22 – Mettler Toledo high volatge generator 04:41 – New electric field NASA space suits https://sservi.nasa.gov/wp-content/uploads/2015/08/farrell_spacesuit_pdf.pdf 05:37 – Teardown: OMG it’s full of rust! 10:06 – Casio ...
Yes, wireless power is BACK! And this time they are targetting gaming rigs. Quaze want to power gaming rigs up to 500W with 15MHz resonant RF wireless desktop power. Let’s take a look! How much is marketing hype? Place your bets now… https://www.quazetech.com/ Youtube: Odysee: Demo video: https://www.youtube.com/watch?v=VTwzKBM7ybw Focus Demo Day: https://www.youtube.com/watch?v=dJW3jGLWqFc https://zumtl.com/en/news/demo-day-focus-decouvrez-la-nouvelle-cohorte-dentrepreneurs/ https://www.laptopmag.com/au/features/quaze-maingear Energous: ...
FIVE different easy methods to crack into a cheap Sandleford safe found in the dumpster, WITHOUT using physical force. Including a bonus 6th method that doesn’t work on this one. Don’t buy cheap hardware store safes, they are garbage! Also advice on what to look for in a good quality home security safe, and TDR ...
Powering up the Banshee ultrasonic leak detector LED display to see how the display is multiplexed turned out to be very interesting! With special guest debugger, Sagan, who invents a new industry term “free range data”. Forum: https://www.eevblog.com/forum/blog/eevblog-1493-the-macgyver-project-part-2/ Youtube: Odysee:
The $5 Hantek oscilloscope is repaired, and I’m giving it away to a youngster in Australia. If you want the scope, enter here: https://www.eevblog.com/forum/contests/giveaway-(oz-only)-hantek-oscilloscope/ Forum: https://www.eevblog.com/forum/blog/eevblog-1492-$5-oscilloscope-repaired-oz-giveaway/ Youtube: Odysee:
Part 1 reverse engineering the interface on the LED display of the Banshee Ultrasonic gas leak detector to make a MacGyver type countdown timer THING (for demonetisation purposes). This will be a choose your own adventure project, I don’t have anything planned, so let me know what you want to see! Forum: https://www.eevblog.com/forum/blog/eevblog-1491-the-macgyver-project-part-1/ Youtube: Odysee:
Teardown of a bizarre looking Banshee 343 Ultrasonic Gas Leak Detector Thumbs up this video and pinned comment if you want to see a countdown timer refit project! Datasheet: https://www.instrumart.com/assets/Net-Safety-Banshee343-datasheet.pdf Manual: https://www.instrumart.com/assets/Net-Safety-Banshee343-manual.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1489-mystery-teardown/ Youtube: Odysee:
Dave tries Jeri Ellsworth’s Tilt Five augmented reality AR glasses for the first time! Unboxing, first reaction, and a bit of a first user review. 00:00 – Tilt Five AR Kickstarter Glasses 01:42 – Unboxing 06:34 – The retroreflective game board 08:58 – Plugging into USB3 and fan cooling 09:35 – The glasses design robustness ...
How much power do Enphase and other solar micro inverters draw at night time when switched off? It’s actually a very interesting question involving real and apparent/reactive power, the system topology, and whether your storage battery is on-grid or off-grid, and also its efficiency curve. Let’s measure it, do some calculations, and look at when ...
You might think you know how film capacitors fail and degrade in capacitance over time – self-healing due to surges, right? WRONG! Capacitor expert and AVX Fellow Ron Demcko confirms what’s really going on after a teardown of some failed and one good polypropylene X class capacitor. 00:00 – Teardown of a some failed film ...
The failed PedalCell CadenceX Bike Generator from the previous mailbag video is tested, torn down, analysed, hilrariously laughed at, and dodgily repaired. https://pedalcell.com/ 00:00 – Failed Pedalcell generator – getting the pinout 02:00 – The PCB 02:40 – Oscilloscope rotation test 03:45 – Dremel speed Captain! 04:22 – Generator teardown 05:32 – Hmm, what’s going ...
Extended version of the Mailbag 1483 teardown of the Kaba Mas X-09 High Security Electronic Lock Teardown Youtube: Odysee:
Bumper Mailbag! Forum: https://www.eevblog.com/forum/blog/eevblog-1483-holy-mailbag-bomb-batman/ SPOILERS: 00:00 – Contact Harald Covid Bluetooth Tracing 04:24 – Kaba Mas X09 High Security Electronic Tumbler Lock Teardown 16:53 – Failed PedalCell CadenceX Bike USB Power Generator 18:00 – Odysee vs Patreon for supporting creators 19:06 – PedalCell CadenceX Teardown 26:54 – TikStation Breadboard USB power supply https://www.tikstation.com/ 38:54 – ...
A follow up to the previous video on repairing the heater. A viewer asked how the capacitor diode rectifier gave a 24V output. The key is in the zener regulator, so this vidoe looks at how mains powered zener voltage regulators work, and their limitations. X class capacitor and self healing. Forum: https://www.eevblog.com/forum/blog/eevblog-1482-mains-capacitor-zener-regulator-circuit/ Youtube: Odysee:
A heater that doesn’t heat up should be an easy and quick repair, right? RIGHT? This Arlec space heater also has a rather dodgy and product recall worthy dangerous construction! 00:00 – Arlec space heater 03:20 – PRODUCT RECALL TIME! 05:12 – Heater element measurement 07:31 – PCB inspection 11:31 – Verifying the fault 12:50 ...
Are solar powered electric cars viable? Let’s look at the Lightyear Zero solar powered electric car and examine the claims. Can you get a useless extended range by adding solar panels to an electric car? Dave just so happens to drive a solar powered electric car, so let’s find out! Forum: https://www.eevblog.com/forum/blog/eevblog-1480-lightyear-zero-solar-powered-electric-car/ 00:00 – Lightyear ...
Is your calculator WRONG? It could be! Looking at the issue of implied multiplication and how it can affect your calculations. Why do some Casio and TI calculators give a different result to others? And why do they differ from your phone calculator, google calculator, or Wolfram Alpha? How Order of Operations matters. TI explains ...
Testing the new Tektronix 2 series waveform update rate vs older Keysight, Siglent, and Rigol scopes, and a glitch signal demonstration on how it matters in the real world. And also how to measure the waveform update rate on your scope. This is not a review, and was going to be a 2nd channel video, ...
A world exclusive teardown of the new generation Tektronix 2 Series MSO bench/portable oscilloscope! An innovative new design form factor you’re either going to love or hate! This is the upgrade to the 15yo MSO/DPO 2000B series to give a low end on the next generation 2/3/4/5/6 series. Youtube: High res teardwon photos:
Teardown of the Keithley 515A Megohm Wheatstone bridge, plus a tutorial on how Wheatsone bridges work and their applications. Manual & Schematic: https://download.tek.com/manual/515A(Model515A).pdf 1960’s Daven precision resistor and attenuator catalog: http://www.technicalaudio.com/pdf/Daven/Daven_attenuator_switch_lab_Catalog.pdf 00:00 Keithley 515A Megohm Wheatstone bridge 03:50 – The Magic smoke test 04:00 – Zero check test 04:40 – Standardise calibration step 05:30 – ...
Answering another viewer question. Can we identify or find an alternative for this SMD part? https://twitter.com/PoiSolutionsLLC/status/1529065036433571840 Forum: https://www.eevblog.com/forum/blog/eevblog-1475-smd-part-indentification-substitution-search/ Youtube: Odysee:
Can you measure capacitors in-circuit with an LCR meter? Forum: https://www.eevblog.com/forum/blog/eevblog-1473-how-your-lcr-meter-works/ Youtube: Odysee:
How an LCR meter works. Forum: https://www.eevblog.com/forum/blog/eevblog-1473-how-your-lcr-meter-works/ Youtube: Odysee: Utreon:
How to solve the resistor cube problem using equipotential nodes, short and open techniques, and circuit simplification. Twitter: https://twitter.com/engineers_feed/status/1519561534787051521 Forum: https://www.eevblog.com/forum/blog/eevblog-1472-resistor-cube-problem-solved/ 00:00 – The Resistor Cube problem 04:28 – The SECRET to circuit simplification using equipotential nodes 06:04 – Analysis “by inspection” 14:22 – Summary of the solution 16:14 – Let’s BUILD it! 19:28 – ...
What’s in the Mailbag? SPOILER: 00:00 – Mailbag 00:41 – Laser etched Delorean Time Machine https://momentsetchedintime.com.au/ 03:29 – Encryption Class C wall mount rack cabinet 05:30 – Russian multimeter with a most UNUSUAL range switch! 08:44 – Smell’o’vision 11:51 – Bob Widlar PCB plaque 15:16 – How to get 5 different colours on a PCB ...
Complex numbers are NOT complex! How complex numbers are used in AC circuit analysis. 00:00 – Complex Numbers 00:44 – Phasor graphical addition 01:22 – Why do calculators have the R-P and P-R buttons? 02:44 – Phasor diagram 03:59 – The AC voltage equation 04:47 – The complex plane and j vs i imaginary axis ...
Part 2 of the AC Basics tutorial series. What are phasors and doing phasor addition. In-phase, out of phase, and leading and lagging waveforms. Phi vs Theta phase angle. Leading into complex numbers in Part 3. 00:00 – AC Basics Theory 00:40 – How an AC waveform is produced 01:37 – Degrees, Radians and Gradians ...
A walk around the 2022 Electronex show in Sydney. 00:00 – Electronex 2022 01:13 – Phoenix Contact 01:38 – Tektronix 03:14 – Siglent 04:37 – John South at Emona + New Rigol StationMax Oscilloscope 07:38 – Harbuch Electronix isolation transformers 09:38 – Mantis remote 3D viewing microscope 12:05 – SMCBA talks 15:04 – Wago 16:33 ...
Stanford University researchers have made a solar panel that works at nighttime! It will reduce or eliminate the need for battery storage! TAKE THAT Big Oil! You can probably guess how it works… Let’s BUST this impractical boondoggle wide open. The research paper: https://aip.scitation.org/doi/pdf/10.1063/5.0085205 Forum: https://www.eevblog.com/forum/blog/eevblog-1466-stanford-solar-power-at-nightime-busted/ 00:00 – Pulitzer prize winning twitter Blue Checkmark time ...
It’s been a while since the dumpster has delivered a computer. Today we get a HP Proliant ML350p Gen8 xeon server. Does it work? Forum: https://www.eevblog.com/forum/blog/eevblog-1466-dumpster-dive-xeon-server/ Youtube: Odysee: Utreon:
Modifying an old Maggy/Luxo magnifying lamp to get LED lighting and work from a Sony NP-FW50 battery.Video available on Odysee and Utreon
How you can use your multimeters capacitance range to measure inductors, using the reciprocal method. Forum: https://www.eevblog.com/forum/blog/eevblog-1465-measure-inductors-using-a-multimeter/
The TOP 5 Jellybean comparators, plus a bonus and special snowflake choice. 00:00 – Jellybean Comparators 01:20 – Traps for young players using Opamps as comparators 04:43 – Is the old School LM311 still THE jellybean? https://www.ti.com/lit/ds/symlink/lm311-n.pdf 11:17 – TS391 Small single comparator https://www.mouser.com/datasheet/2/389/cd00001660-1795546.pdf 16:33 – LM393/LM2903 Dual comparator https://www.ti.com/lit/ds/symlink/lm393a.pdf 21:27 – LM339/LM2901 Quad comparator ...
What’s in Dave’s Mailbag? Forum: https://www.eevblog.com/forum/blog/eevblog-1463-mailbag/ SPOILERS: 00:00 – Mailbag Bonanza! 03:24 – 3M IDC Crimping tool 04:57 – Bulova Accutron Watchmaster battery tester 06:52 – The best button EVER! 07:24 – Continentak Specialties Corporation breadboard 07:53 – Moving Iron AC ammeter 09:29 – Analog Devices power brick 09:57 – Heathkit Digital Design Experimenter 15:31 ...
As if Dymo adding DRM to force you to use their labels wasn’t low enough, they have been BUSTED reusing their old 450/4XL Amazon listings in order to keep all their old positive reviews to make you think people are positively reviewing their new 550/5XL DRM model! This deception should be reported to Amazon.
Don’t buy the new Dymo 550 or 5XL label printers, they now use DRM NFC/RFID technology in the paper rolls to force you into using their labels at 10 TIMES the cost! EFF: https://www.eff.org/deeplinks/2022/02/worst-timeline-printer-company-putting-drm-paper-now NXP NFC chip: https://www.nxp.com/docs/en/data-sheet/SL2S2602.pdfSLRC610 RFID/NFC frontend: https://au.mouser.com/datasheet/2/302/SLRC610-1127743.pdf Forum: https://www.eevblog.com/forum/reviews/dymo-550-thermal-printer-drm-hacking/ Photos:
Join Dave in the search for an alternative replacement MOSFET. It might not be as easy as it sounds. Talk about how to identify components and circuit function, MOSFET parameters, and using google and parametric searches on supplier and manufacturer websites. Can YOU find a -30V 17A P Channel SO-8 MOSFET WITH ESD protection? Forum: ...
Dave repairs his failed Aputure Amaran HR672C LED studio light which is mysteriously killing batteries and falsely indicates charging when no batteries are installed. And salvaging the spare part from an old dumpster laptop! Forum: https://www.eevblog.com/forum/blog/eevblog1460-interesting-repair-of-an-aputure-amaran-led-studio-light/
Is it worth salvaging parts from a consumer HP office Inkjet Printer/Scanner from the dumpster? Forum: https://www.eevblog.com/forum/blog/eevblog-1459-is-it-worth-parts-salvaging-an-inkjet-printerscanner/
Can’t see those pesky laser etched part numbers on chips? Dave demonstrates what’s happening with the microscope polarising filter lenses on Twitter that’s blowing people’s minds. Does it actually work? And other tricks of the trade. https://twitter.com/azonenberg/status/1494061604161220615 https://twitter.com/ghidraninja/status/1494343655053832203 Aputure Amaran AL-M9 LED light https://amzn.to/3H0O5KW Leica microscope brochure: https://downloads.leica-microsystems.com/Leica%20LED3000%20RL/Brochures/Leica%20LED3000-5000_Brochure_EN.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1458-microscope-polarising-magic!/
Old school mailbag. Forum: https://www.eevblog.com/forum/blog/eevblog1457-old-school-mailbag/ SPOILERS: 00:00 – Old School Mailbag 01:09 – TOASTY Quadcopter ESC 08:07 – The best XMAS Tree LED light yet https://www.elimo.io/ 11:26 – Kaiweets ST600Y Multimeter https://s.click.aliexpress.com/e/_ALpSqJ 16:00 – UK Radio Teleswitch Protocol: http://downloads.bbc.co.uk/rd/pubs/reports/1984-19.pdf
Repairing a Sega Toys Deathstar, err, Homestar Flux Planetarium https://amzn.to/3BsaIH7 Forum: https://www.eevblog.com/forum/blog/eevblog-1456-sega-toys-homestar-planetarium-repair/
Electrolytic capacitors produce current when they are reflow soldered! Enough to possibly light up a high efficiency LED. What is going on? A initial investigation with experiments and measurements. https://twitter.com/GregDavill/status/1491235709071818752 00:00 – WTF? 01:42 – Practical experiment heating up an electrolytic capacitor 07:37 – Data logging 09:55 – Analysing the spreadsheet graph Forum: https://www.eevblog.com/forum/blog/eevblog-1455-capacitors-produce-current-during-reflow-soldering-wtf/
Another Indiegogo marketing takedown. Kara Pure raised $1M for a water-from-air dessicant dehumidifier that costs US$1800 uses a $20 alkaline mineral filter to give you tasty filtered water for the cost only 14kWh/day in energy, at best. So dumb it hurts. https://www.alibaba.com/product-detail/ALK-alkaline-water-filter-cartridge_62009370049.html https://www.indiegogo.com/projects/kara-pure-make-pure-water-from-the-air Forum: https://www.eevblog.com/forum/blog/eevblog-1454-water-from-air-again-the-kara-pure/
Teardown of the Elgato Key Light https://amzn.to/3oqObEW Forum: https://www.eevblog.com/forum/blog/eevblog-1453-elgato-key-light-teardown/
Repairing the Fluke/Philips PM3370B combiscope. Or have we? Service manual with schematic: https://www.manualslib.com/manual/1441823/Fluke-Autoranging-Combiscope-Pm3370b.html Forum: https://www.eevblog.com/forum/blog/eevblog-1452-fluke-pm3370b-combiscope-repair/
Showing you all the tools and techniques I use to shoot videos. Cameras, lighting, sound, streaming, editing, macro phototography, microscopes, green screen, and ATEM live production system. Locals: https://locals.com/member/EEVblog
A $99 Fluke PM3370B Combiscope score from Ebay! Will it work? Unboxing video: https://odysee.com/@eevblog:7/2022-01-18-FlukeScopeUnboxing:f 00:00 – Fluke Combiscope Ebay Score 03:26 – Will it work? 05:32 – WTF was THAT?! 10:25 – Teardown 15:48 – Unusual ASIC Bypassing! 17:11 – Dodge of the day AWARD WINNER! Forum: https://www.eevblog.com/forum/blog/eevblog-1450-$99-fluke-combiscope-ebay-score/
A BM235 customer has a BM235 that drains the batteries in OFF switch mode, lets look at the PCB to find out the possible culprits. Potentially applicable to any battery powered product. Forum: https://www.eevblog.com/forum/blog/eevblog-1449-what-causes-excess-battery-drain-(bm235)/
How to convert a Fluke 77 IV average responding multimeter into a True RMS model 177 for 10 cents. *Plus calibration gear Should also work for converting a Fluke 83V to 87V True RMS measurement vs Average Responding And how to calibrate a Fluke multimeter. Fluke 87V service manual with schematic: https://xdevs.com/doc/Fluke/87V/Fluke_87V_Full_service_manual_with_schematic_and_electrical_parts_list_Service_Manual-87VANFullService.pdf 00:00 – Hacking ...
Why are Fluke multimeters so expensive? PART 2 A teardown of the Fluke 70/170 series vs the Brymen BM786. Is there any design and construction difference that justifies 2-3 times the price? 00:00 – Fluke vs Brymen 01:07 – The Yellow Peer Pressure 01:57 – Fluke 77/177 vs Brymen BM786 04:01 – Ruggedness 05:05 – ...
Analog Watt Hour energy meters are fascinating! How they work, teardown, and experiments. Thanks to Max Button for sending this in to the mailbag. 00:00 – Watt Hour Energy Meters 02:11 – Teardown 05:13 – What’s to stop it taking off? 06:40 – Does it work? Testing with a load. 07:24 – Can you get ...
How to simulate a x1 oscilloscope probe in LTSPICE. And how to use the lossy transmission line model in practice with the spice directive. Forum: https://www.eevblog.com/forum/blog/eevblog-1445-how-to-simulate-an-oscilloscope-probe-in-ltspice/
8 industry reasons why Fluke meters are so expensive, and why people still buy them. You might be surprised by some of the reasons and have not encountered this thinking before in the industry. NOT sponsored by Fluke. In fact you should buy my BM786 for 20% off using the coupon code 555, way cheaper ...
XMAS Mailbag featuring Mrs EEVblog, Sagan, and Huxley! Forum: https://www.eevblog.com/forum/blog/eevblog-1444-xmas-mailbag/ SPOILERS: Badge https://bit.ly/3m3t4Yj RF Antenna DigitalCool PCB Coaster: https://www.tindie.com/stores/digitalcool/ Neon photos from a future Indian EE Casio OH-7000G overhead projector calculator Trevor’s Bench https://www.youtube.com/c/TrevorsBench Circuit Mess Nibble STEM kit: https://circuitmess.com/nibble/ kWh meter Spotty solder paste dispenser: https://avdweb.nl/tech-tips/pcb/solder-paste-dispenser 1980’s Appliance control from your phone Curz Scanner: ...
A follow-up video to the Electrodynamic Shaker, showing you the critical importance of Coherence measurement. Something you’ll only get taught in the school of hard knocks! Using the Ling Electrodynamic shaker, a measurement accelerometer, and a Dynamic Signal Analyser to set up a vibration test system. 00:00 – Electrodynamic Shaker 01:20 – The most inportant ...
An innocent TO-220 regulator gets tortured using a mystery device from the bunker. The art of environmental PCB testing. 00:00 – What is this thing? 01:00 – I used to use these all the time 02:40 – Electrodynamic Shaker 03:56 – How PCB’s are vibration tested 07:00 – Teardown 08:10 – Accelerometers 12:27 – The ...
Repsonding to Adam Something’s video claiming that electric buses are a scam. Lets analyse his claims and look at what’s really happening with the cost benefit anlysis of electric buses vs diesel and electric trolley buses. Adam’s video: https://www.youtube.com/watch?v=AqHsXv7Umvw 00:00 – Electric buses are a scam 01:20 – The claims 01:50 – Growth of electric ...
Teardown of a mid 90’s vintage Pentax IQZoomEZY film camera. Forum: https://www.eevblog.com/forum/blog/eevblog-1440-pentax-film-camera-teardown/
Dave analyses Veritasium’s video “The Big Misconception About Electricity” and how energy flows in the Poynting vector in the electromagnetic field OUTSIDE the wire instead of inside the wire. 00:00 – Veritasium’s video “The Big Misconception About Electricity” 00:32 – Rection to the points in the video 01:11 – This is a bit MISLEADING! 02:28 ...
Dave looks at his TOP 5 (plus change) Jellybean Voltage Regulators and References, and explains why you need to know them. 00:00 – Jellybean Voltage Regulator & References 01:52 – 78xx Linear Voltage Regulator 08:01 – Adjustable Voltage Regulator 13:52 – 1117 Low Dropout Regulator 15:21 – LDO Stability 20:01 – LM4040/4041 Voltage Reference 24:38 ...
How does an Electric Car charger work? A teardown of the Myenergi Zappi 7kW EVSE and experiments demonstrating how the car detection system and charge mode works. 00:00 – Zappi 7kW Single Phase EVSE Charger 02:46 – Type 2 Charging Standards 08:30 – Teardown 17:32 – Power Up 20:56 – Experiments! Forum: https://www.eevblog.com/forum/blog/eevblog-1437-zappi-7kw-electric-car-charger-teardown-experiment/ Installation & ...
Dave looks at his TOP 5 (plus change) Jellybean OPAMP’s, and explains why you need to know them. Forum: https://www.eevblog.com/forum/blog/eevblog-1436-the-top-5-jellybean-opamps/ 00:00 – Jellybean OPAMP’s 01:47 – LM358 07:51 – FET Input TL071/72/74 11:28 – CMOS LMV358 15:17 – LM324 17:23 – The LM321 is NOT a thing 19:09 – Oh, all right, the LM741 19:41 ...
Dave goes hunting for the most expensive IC on Digikey and ends up finding a bunch of unusual stuff! Forum: https://www.eevblog.com/forum/blog/eevblog-1435-the-worlds-most-expensive-catalog-ic/
Teardown of a Cadex C7000 commercial battery analyser. Forum: https://www.eevblog.com/forum/blog/eevblog-1434-cadex-c7000-battery-analyser-teardown/ 00:00 – Cadex C7000 Battery Analyser 04:20 – Universal probe teardown 09:45 – Main unit teardown 22:14 – Power up
Dave eventually finds the (a) fault in the Sony RX100 MkIV camera. WARNING: No happy ending, just an hour and ten minutes of Dave getting his arse kicked by Murphy. 00:00 – Sony RX100 Mk4 Repair Part 3 01:03 – Down the schematic rabbit hole 06:23 – That looks important 15:46 – The least likely ...
Dave shares his thoughts on owning a fully electric Hyundai IONIQ car after 12 Months & 17,000km Forum: https://www.eevblog.com/forum/blog/eevblog-1432-owning-an-electric-car-for-12-months-17-000km/
Teardown of the new Keysight EDU33212A 20MHz Function Generator Odysee exclusive: https://odysee.com/@eevblog:7/Photo-Spectrometer-Teardown:7 Forum: https://www.eevblog.com/forum/blog/eevblog-1431-keysight-edu33212a-function-generator-teardown/
Dave goes through the real calculations of what it ultimately cost him to rent an office vs buying an office back on 2015. And on the importance of being your own bank, compounding interest reduction, paying off your loan early, and offset accounts for cash flow benefits. Forum: https://www.eevblog.com/forum/blog/eevblog-1430-rent-vs-buy-my-$400-000-mistake!/
PART 2 Troubleshooting the Sony RX100 Mk4 camera. Service manual: https://www.eevblog.org/files/dsc-rx100m4-sm2.pdf Schematics: https://www.eevblog.org/files/dsc-rx100m4.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1428-sony-rx100-camera-repair-and-then-wtf!/
Dave “repairs” his Sony RX100-IV camera only to go WTF?! A long video that is mostly disassembly and reassembly, so use the time markers if you are bored. 00:00 – Sony RX100 Mk4 Repair 04:30 – Teardown 14:44 – Dave gets ZAPPED! 23:19 – Processor Board 25:51 – Lens assembly 30:00 – Finally IN to ...
From the EEVblog forum, an infuriating electronics exam question! Plus a bonus job interview tip. 00:00 – The Forum question 02:12 – Is this a good job interview question? 03:36 – Dave’s working… 07:04 – The Solution 08:08 – Other forum responses 11:40 – Kirchoff’s Current Law MUST Hold! 12:51 – REBEL against The System! ...
Dave tracks down why his old 3kW system that was moved was now showing a 20% drop in output power at the same time every day. Is it inverter temperature, inverter mains voltage, solar panel cracking, dodgy connection resistance, or shading? Forum: https://www.eevblog.com/forum/blog/eevblog-1426-this-problem-can-drop-solar-output-by-20/
Part 2 of the Fluke 23 multimeter repair by digging into the bunker meter archives from episode #84 Experimenting with alfoil Forum: https://www.eevblog.com/forum/blog/eevblog-1425-fluke-repair-2-electric-boogaloo/
Repair of an original Fluke 23 Multimeter. Forum: https://www.eevblog.com/forum/blog/eevblog-1424-fluke-23-multimeter-repair/
Dave released the magic smoke during a repair! Brain was not engaged… 00:00 – Alien LED driver 01:34 – New microscope measurment setup! 02:46 – Teardown 07:45 – Brown Black Burnt 09:31 – This sucks! 16:08 – BANG! 18:49 – It seemed reasonable at the time… 19:41 – Reverse Engineering
The report has been released on the Tesla Moorabool Victoria Big battery fire by Energy Safe Victoria, let’s go through it and discuss the cause. https://esv.vic.gov.au/news/cooling-system-leak-led-to-victorian-big-battery-fire/ Report: https://esv.vic.gov.au/wp-content/uploads/2021/09/VBB_StatementOfFindings_FINAL_28Sep2021.pdf Forum: https://www.eevblog.com/forum/renewable-energy/australias-biggest-tesla-battery-storage-system-at-moorabool-is-on-fire/msg3715759/#msg3715759 00:00 – Overview Tesla Moorabool Fire 02:44 – Finding on the cause of the fire 07:14 – Corrections and improvements required to get back online ...
Dave hacks a dumpster find to power it up because of a PITA power connector. Then does some bonus PCB imaging. Forum: https://www.eevblog.com/forum/blog/eevblog-1421-dumpster-hack/
1 hour Mailbag! Forum: https://www.eevblog.com/forum/blog/eevblog-1420-mailbag/ SPOILERS: 00:00 – Pleo the Dinosaur! The designer talking about Pleo: https://www.youtube.com/watch?v=BOba_zGoZq8 The Commodore Collector: https://www.thecommodorecollector.com/ 06:23 – Amazing workbench of the week from voltnut Xdevs! https://xdevs.com/ 14:25 – DEC VAX 370/11 135A 5V PSU teardown 22:22 – Emizon MCM Electronics alarm panel + AdPlayer LCD screen Mike’s LED Shed: ...
RIP Sir Clive Sinclair. Dave finally gets around to starting to take apart and restore the classic Sinclair C5 electric vehicle.
Forum: https://www.eevblog.com/forum/blog/eevblog-1420-sinclair-c5-restoration-part-2/
This “Repair” of a Keysight DSOX1102G oscilloscope was a tad embarrassing…
Forum: https://www.eevblog.com/forum/blog/eevblog-1418-the-most-embarrassing-repair/
Following in from the DC circuit fundamanetals series starts the AC circuti fundamentals series. This part 1 looks at:
– What is Alternating Current
– How AC is created using a generator
– Angular Frequency
– The sinusoidal waveform, benefits and downsides
– Average, peak, peak to peak, and RMS waveforms, calculation and conversions.
– Non-sinusoidal waveforms
– Crest factor and its impact on multimeter RMS measurement
DC theory series playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtVLq2MDPIz82BWMIZcuwhK
Forum: https://www.eevblog.com/forum/blog/eevblog-1417-alternating-current-ac-basics-part-1/
Random teardown from the lab, a Sennheiser EW100 true diversity wireless microphone receiver. Plus an explanation of how antenna diversity works.
Transmitter and camera receiver teardown: https://www.youtube.com/watch?v=dFvN04Woihk
Gary: https://twitter.com/Gary43696951
Forum: https://www.eevblog.com/forum/blog/eevblog-1416-random-teardown-sennheiser-ew100-true-diversity-receiver/
Reverse engineering the Micsig DP10007 high voltage differential probe. Turning the PCB into a schematic.
Forum: https://www.eevblog.com/forum/blog/eevblog-1415-reverse-engineering-the-dp10007-differential-probe/
Reverse enginering how-to for the Rigol oscilloscope: https://www.youtube.com/watch?v=lJVrTV_BeGg
DIY light box for PCB photography: https://www.youtube.com/watch?v=6ZH2KeplSrs
Can Dave destroy the Micsig DP10007 high voltage differential probe by turning the voltage up to 1100V RMS? Plus a teardown of course. https://www.eevblog.com/product/hvp70/
Forum: https://www.eevblog.com/forum/testgear/new-eevblog-hv-probe/
Teardown and measurements with the Micsig CP2100B 2.5MHz oscilloscope current probe. Also a demonstration of mains switch mode power supply current and noise measurement, and also some performance tests.
Use the coupon code FLUX for 15% off! And paying with crypto gets you a further discount on top of that! https://www.eevblog.com/product/cp2100b/ Or get the cheaper lower bandwidth 800KHz CP2100A model: https://s.click.aliexpress.com/e/_A1gq4i https://s.click.aliexpress.com/e/_AKl2Y2
00:00 – Intro
05:39 – Teardown of base unit
14:25 – Clamp unit teardown
23:40 – Mains switchmode current measurement
34:00 – Measuring the Earth’s magnetic field!
34:42 – Noise measurement
35:26 – Low current measurement
Forum: https://www.eevblog.com/forum/blog/eevblog-1413-micsig-cp2100b-current-probe-teardown-and-test/
Dave tears down the 10W Coherent 300C Argon Ion laser. All 42kg, 1.2m and 24kW worth!
The App Hour podcast episode: https://theamphour.com/521-outdoor-laser-projection-object-mapping-with-daryl-tewksbury/
Forum: https://www.eevblog.com/forum/blog/eevblog-1412-argon-ion-laser-teardown/
Mailbag!
Froum: https://www.eevblog.com/forum/blog/eevblog-1410-mailbag/
SPOILERS:
00:00 – Dancom RT403B 25W VHF Marine Transceiver teardown.
09:07 – Workbench of the week, Tony Albus: https://www.youtube.com/channel/UCwLPcv2xiA3D9lfGArF58ww
TEA: https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/
12:36 – Riedon SSA-100 100A Differential Isolated Current Sensor. https://riedon.com/ https://www.digikey.com/en/products/detail/riedon/SSA-100/12149327
22:19 – DODGY! Soviet era mains rechargable torch
27:36 – Jon Newcomb’s Microcontroller Proto Boards https://www.ebay.com/usr/jon_newcomb
33:57 – Affable Snake Breadboard LED bargraph https://www.tindie.com/products/affablesnake/slim-breadboard-indicator-green-8-position/
35:34 – Mystery $2 ebay item DESTROYED by Widlarizer!
37:47 – Present from a 13yo viewer
39:40 – Multimeter PicoProbes: https://www.tindie.com/products/twires/picoprobes/
A practical demonstration of Lenz’s law and back EMF in an inductive relay coil and how to solve it using a Freewheeling/Flywheel/Flyback/Snubber/Clamp diode. Also the downsides of clamping diodes, and switch arcing supression. Also a look at an AMAZING potential phenomenon you probably haven’t seen before! Actually, two rather cool things you probably haven’t seen before. Along with transistor ratings, transistor storage current, and Collector-Emitter breakdown voltage, there is a lot to unpack in this video. This is a follow-on from the DC Transients Fundamentals video
00:00 – Recap of Relays, Inductors, Faraday & Lenz’s Laws
02:30 – Relay Back EMF Explained
07:09 – The Flywheel analogy of Inductors
08:30 – Relay circuit demonstration
12:35 – 700V Back EMF!
14:43 – BJT Transistor Storage Time
17:03 – Back EMF Diode clamp demonstrated
19:06 – An AMAZING demonstration!
24:43 – Trap for young players
25:23 – DOWNSIDES of Back EMF Diodes
28:38 – BONUS cool effect of Back EMF diode DEMONSTRATED
Forum: https://www.eevblog.com/forum/blog/eevblog-1409-the-huge-trap-of-inductor-back-emf/
WiGL have raised almost 5 MILLION dollars on StartEngine. What’s worse than another wireless charging technology startup? – One that doesn’t really have any original technology and simply uses off the shelf RF energy harvesting chips! This one is just embarrassing. And they want to comepete with Energous, WiTricity, Ossia and others, LOL. For a near identical product, and one that contains some actual original tech to try and do 5W wireless charging, see my debunk of the Xiaomi wireless charger.
This is EXACTLY what the WiGL will have to be if it wants to receive 5W directed RF power. The numbers and issues will be exactly the same, so just replace the word Xiaomi with WiGL and you have another Part 2 debunk of WiGL: https://www.youtube.com/watch?v=X6JDOXjvKAI
Sorry for the length, here are some handy time markers:
00:00 – WiGL Raised $5M on StartEngine
02:50 – A look at the StartEngine campaign
07:15 – It’s like WiFi for Power! Where have we heard this before?
12:02 – Let’s comete with Enerous, HUAWEI, WiTricity, and Ossia. LOL
13:52 – Brand Dominance!
16:00 – Let’s watch the promo video!
17:38 – The AMAZING WiGL Energy Unit technology!
23:07 – A whopping 2.5mW!
25:56 – All hail the White Paper!
29:40 – The Patent
34:12 – Let’s charge an iPhone!
36:58 – Their latest technology demonstrator!
38:15 – WiGL Tech Talk with the founder showing off their latest tech!
45:26 – INFINITE POWER!
46:23 – We’ve already done it! No, no you haven’t.
47:49 – Uh-Oh! We have a SKEPTIC! WiGL Video: https://www.youtube.com/channel/UCp8St2LrfCuHuPd1UoXfjng StartEngine: https://www.startengine.com/wigl
White Paper: https://wiglpower.com/wp-content/uploads/2018/02/WigL-White-Paper-Download.pdf
Home page: https://www.wiglpower.com/
Patent: https://patents.google.com/patent/WO2018212805A1/en?oq=9985465 Forum: https://www.eevblog.com/forum/blog/eevblog-1408-$5m-wigl-wireless-charging-busted!/
The conclusion of the DC circuit fundmentals tutorial series. How a capacitor and inductor works, parallel and series configurations, exponential rise and decay, time constants, and basic differential calculus. Energy storage in capacitors and inductors and how a collapsing inductor magnetic field can be both a problem and a benefit.
Forum: https://www.eevblog.com/forum/blog/eevblog-1406-dc-circuit-transients-fundamentals/
A side-by-side teardown of the Focusrite Scarlett Solo and the Rode AI-1 USB audio interface.
The HP9845B 16 bit computer was revolutionary in 1979 and the early 1980’s, find out why. The 9845C colour version of this created the amazing war room images for the movie War Games
Forum: https://www.eevblog.com/forum/blog/eevblog-1404-the-amazing-hp-9845b-computer/
Teardown of the new NGA100 100V 2A NGA142/NGA102 Lab Power Supply, and a look at a few issues found. PLUS a GIVEAWAY of two units! https://www.rohde-schwarz.com/hk/products/test-and-measurement/dc-power-supplies/rs-nga100-power-supply-series_63493-959872.html
Forum: https://www.eevblog.com/forum/blog/eevblog-1402-rohde-schwarz-nga100-psu-teardown-giveaway/
Forum GIVEAWAY: https://www.eevblog.com/forum/contests/giveaway-rohde-schwarz-nga102-psu/
Schools/Makerspace GIVEAWAY: https://www.eevblog.com/forum/contests/schools-makerspace-giveaway-rohde-schwarz-nga142-psu/
Dave closes out the basic DC circuit series with DC Power, Efficiency, & Maximum Power Transfer Theory tutorial. Includes Ohm’s law refresher. DC Fundamentals
Forum: https://www.eevblog.com/forum/blog/eevblog-1401-dc-power-efficiency-maximum-power-transfer-theory/
Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtVLq2MDPIz82BWMIZcuwhK