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
