Here’s a quick tip from @ladyada that will show you how you can use the EN (enable) pin to control the power on your Adafruit Feather with a SPDT slide switch.

Power Switch

Here is how to connect the switch to your Feather:

  • Feather GND -> Center pin on the switch
  • Feather EN -> One of the outer pins on the switch

You can now turn your Feather off by flipping the switch to the side that is connected to the EN pin.

For more info about the EN (enable) pin, check out this guide.