Circuit Diagram

Circuit Diagram

This provides a visual reference for the wiring of the components. They aren't true to scale, just meant to be used as reference. 

To power this circuit, we'll use a 3.7v 2500mAh lipo battery. The PowerBoost has an on board regulator that will convert the voltage to 5V automatically. It also has on-board charging circuit, so we can recharge it over USB when the battery gets low.

  • Ground from PowerBoost to Switch
  • Enable from PowerBoost to Switch
  • 5V from PowerBoost to 5V on TFP401
  • Ground from PowerBoost to ground on TFP401
  • Battery to JST connector on PowerBoost
This guide was first published on May 31, 2017. It was last updated on May 31, 2017. This page (Circuit Diagram) was last updated on Aug 20, 2019.