Circuit Diagram

Wired Connections

The circuit diagram above shows how the components can be wired together. If you don't want to create the custom PCB, you can optionally wire the switches to the GPIO pins on the Adafruit Feather. This won't be 100% exact in the actual circuit but it's a very close approximation.

  • Slide switch to EN pin on Adafruit Feather 32u4 Bluefruit LE
  • Slide switch to GND pin on Adafruit Feather32u4 Bluefruit LE
  • Pin 5 from Adafruit Feather32u4 Bluefruit LE to Switch 1
  • Pin 6 from Adafruit Feather32u4 Bluefruit LE to Switch 2
  • Pin 9 from Adafruit Feather32u4 Bluefruit LE to Switch 3
  • Pin 10 from Adafruit Feather32u4 Bluefruit LE to Switch 4
  • Pin 11 from Adafruit Feather32u4 Bluefruit LE to Switch 5
  • Pin 12 from Adafruit Feather32u4 Bluefruit LE to Switch 6

Battery Power

The circuit will be powered by a 3.7V 350mAh Lithium ion battery via JST connection. The battery plugs directly into the Adafruit Feather 32u4 Bluefruit LE, which also has a built-in charging circuit over microUSB.

This guide was first published on Dec 21, 2016. It was last updated on Dec 21, 2016. This page (Circuit Diagram) was last updated on Dec 05, 2019.