Circuit Diagram

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

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Wired Connections

The Prop-Maker FeatherWing is fitted on top of Adafruit Feather M4 Express via extra female headers on the Feather M4 and male headers on the Prop Maker FeatherWIng. The speaker is connected via a molex picoblade connector.


The Adafruit Feather M4 Express can be powered via USB or JST using a 3.7v lipo battery. In this project, a 1200mAh lipo battery is used. The lipo battery is rechargeable via the USB port on the Adafruit Feather. The RGB LED pushbutton is wired to the enable and ground pins on the Prop-Maker FeatherWing.


  • INT from NeoTrellis to Pin #5 on Prop-Maker FeatherWing
  • VIN from NeoTrellis to 3V on Prop-Maker FeatherWing
  • GND from NeoTrellis to Ground on Prop-Maker FeatherWin
  • SCL from NeoTrellis to SCL on Prop-Maker FeatherWing
  • SDA from NeoTrellis to SDA on Pro-Maker FeatherWing


  • red pin (R-) to red pin on Prop-Maker FeatherWing
  • green pin (G-) to green pin on Prop-Maker FeatherWing
  • blue pin (B-) to blue pin on Prop-Maker FeatherWing
  • voltage pin (V+) to V+ pin on Prop-Maker FeatherWing

Push Button

  • button to SW pin on Prop-Maker FeatherWing
  • button to –(ground) pin on Prop-Maker FeatherWing


  • Voltage and ground to Prop-Maker speaker port

On/Off Switch

  • Middle pin to enable pin on Prop-Maker
  • Far left or right pin to ground on Prop-Maker

Reset Button

  • button to RESET pin on Prop-Maker FeatherWing
  • button to ground pin on PropMaker FeatherWing

This guide was first published on Jul 16, 2019. It was last updated on Jun 12, 2024.

This page (Circuit Diagram) was last updated on Mar 08, 2024.

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