# 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.

**2 device listed.**

## Circuit Playground Classic

All-in-one ATmega32u4 learning board with 10 NeoPixels, LIS3DH accelerometer, microphone, speaker, light and temperature sensors, and 8 capacitive touch pads in a circular 2-inch form factor.

[Details](https://openhardware.directory/devices/circuit-playground-classic) | [Markdown](https://openhardware.directory/devices/circuit-playground-classic/md)

## Circuit Playground Express

All-in-one ATSAMD21 learning board with 10 NeoPixels, LIS3DH accelerometer, MEMS microphone, speaker with class D amp, IR transmit/receive, 7 capacitive touch pads, and 2MB SPI flash for CircuitPython code storage.

[Details](https://openhardware.directory/devices/circuit-playground-express) | [Markdown](https://openhardware.directory/devices/circuit-playground-express/md)