In this project, you'll learn how to build an audio reactive LED matrix using the 13x9 IS31FL3741 LED matrix and Feather Sense nRF52840 board with CircuitPython. The Feather Sense nRF52840 features a built-in PDM MEMs microphone for audio input. Audio is sampled via the onboard PDM microphone. The sampled data is then visualized with color.
Guide: https://learn.adafruit.com/mini-led-matrix-audio-visualizer
Feather Sense nRF52840 https://www.adafruit.com/product/4516
LED Matrix 13x9 IS31FL3741 https://www.adafruit.com/product/5201
Code by Liz Clark on GitHub https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/Feather_Sense_Audio_Visualizer_13x9_RGB_LED_Matrix/waterfall_visualizer/code.py
Code by Phil B on GitHub https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/Feather_Sense_Audio_Visualizer_13x9_RGB_LED_Matrix/audio_spectrum_lightshow/code.py
3D Files on Thingiverse https://www.thingiverse.com/thing:4983214/
3D Files on PrusaPrinters https://www.prusaprinters.org/social/3814-adafruit/prints
uLab Learn Guide https://learn.adafruit.com/ulab-crunch-numbers-fast-with-circuitpython
3D Parts Library on GitHub https://github.com/adafruit/Adafruit_CAD_Parts
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