The diagram below provides a visual reference for wiring of the components. This diagram was created using the software package Fritzing.

Adafruit Library for Fritzing

Use Adafruit's Fritzing parts library to create circuit diagrams for your projects. Download the library or just grab individual parts. Get the library and parts from GitHub - Adafruit Fritzing Parts.

Wired Connections

  • Switch to GND
  • Switch to EN
  • SDA from MLX to SDA on PyBadge
  • SCL from MLX to SCL on PyBadge
  • VCC from MLX to VCC on PyBadge
  • GND from MLX to GND on PyBadge
  • Button to RESET 
  • Button to GND


The Adafruit board can be powered via USB or JST using a 3.7v lipo battery. In this project, a 420mAh lipo battery is used. The lipo battery is rechargeable via the USB port on the board. The switch is wired to the enable and ground pins on the board.

This guide was first published on Apr 24, 2020. It was last updated on Mar 08, 2024.

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

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