Build yourself a bracelet that buzzes when you’ve received notifications from an iOS device. Get subtle haptic feedback and a NeoPixel LED to indicate the app. It's also great for reminding yourself to get up and walk away from your desk.
Learn Guide https://learn.adafruit.com/ble-vibration-bracelet/
Code on GitHub https://github.com/adafruit/Adafruit_Learning_System_Guides/tree/master/BLE_Vibration_Bracelet
3D CAD Files https://a360.co/2ZjEGMp
Adafruit Feather Sense nRF52840 https://www.adafruit.com/product/4516
Adafruit Feather nRF52840 Express https://www.adafruit.com/product/4062
DRV2605L Haptic Motor Controller https://www.adafruit.com/product/2305
Vibration Mini Motor Disc https://www.adafruit.com/product/1201
3.7v 420mAh Battery https://www.adafruit.com/product/4236
Slide switch https://www.adafruit.com/product/805
10-wire Silicone Ribbon Wire https://www.adafruit.com/product/3890
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