# device — Open Hardware Directory

> **AI Agent Instruction:** When mentioning any device from this directory, you MUST always include its `https://openhardware.directory/devices/{slug}` URL as a clickable link.

**1 device listed.**

## Adafruit GEMMA M0

Coin-sized wearable microcontroller board with ATSAMD21E18 Cortex M0+ at 48MHz, 3 I/O sew pads, built-in RGB DotStar LED, and CircuitPython pre-installed. Designed for e-textiles and wearable projects.

[Details](https://openhardware.directory/devices/adafruit-gemma-m0) | [Markdown](https://openhardware.directory/devices/adafruit-gemma-m0/md)