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

NeoPixel Jewel

  • 5V from Jewel to 3V on GEMMA
  • GND from Jewel to GND on GEMMA
  • DIN from Jewel to D2 on GEMMA

5V MiniBoost

  • VIN from MiniBoost to VOUT on GEMMA
  • GND from MiniBoost to GND on GEMMA

5VDC Fan

  • Voltage from fan to 5V on MiniBoost
  • Ground from fan to GND on MiniBoost


The Adafruit board can be powered via USB or JST using a 3.7v lipo battery. In this project, a 2200mAh lipo battery is used. The battery is rechargeable with a USB lipo charger. The switch is wired to a JST adapter.

This guide was first published on Aug 25, 2020. It was last updated on Jun 14, 2024.

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

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