Circuit Diagram

Click to enlarge.

The lipoly backpack sits atop the audio FX board with the provided headers. Other connections as follows:

  • trigger pin 2 -> GND
  • potentiometer first leg -> GND
  • potentiometer second leg -> audio board R
  • potentiometer third leg -> amp A+
  • amp A- -> GND
  • amp Vin -> 5V
  • amp GND -> GND
  • switch leads to lipoly backpack (after cutting connecting trace)
  • switch LED + -> 220 ohm resistor -> 5V
  • switch LED - -> GND
  • amp outputs to speaker
This guide was first published on Feb 18, 2015. It was last updated on Feb 18, 2015. This page (Circuit Diagram) was last updated on Sep 18, 2019.