# 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 v2

Tiny 27mm round sewable wearable microcontroller with ATtiny85 at 8 MHz, 3 GPIO, Micro USB programming, 3.3V power, and reverse-polarity protection — ideal for small LED and NeoPixel wearable projects.

[Details](https://openhardware.directory/devices/adafruit-gemma-v2) | [Markdown](https://openhardware.directory/devices/adafruit-gemma-v2/md)