# 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.

**6 device listed.**

## Adafruit METRO M0 Express

Arduino Uno-compatible development board powered by ATSAMD21G18 Cortex M0+ at 48MHz with 256KB flash, 32KB SRAM, 2MB SPI flash, and CircuitPython pre-loaded. Features Arduino shield compatibility and native USB.

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

## Adafruit PyBadge LC

Low-cost credit card-sized gaming/badge board with ATSAMD51J19 at 120MHz, 1.8\" 160x128 TFT, 8 game buttons, 1 NeoPixel, light sensor, buzzer, 2MB SPI flash, and MicroSD. Supports MakeCode Arcade, CircuitPython, and Arduino.

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

## Adafruit PyBadge

Credit card-sized gaming and badge board with ATSAMD51J19 at 120MHz, 1.8\" 160x128 TFT, 8 game buttons, 5 NeoPixels, LIS3DH accelerometer, light sensor, 2W speaker, 2MB SPI flash, Feather headers, STEMMA connectors, and LiPo charging.

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

## BIQU RGBDuino UNO V1.2

Arduino UNO-compatible development board based on ATmega328P-AU at 16MHz/5V, featuring RGB LED indicators. Available in Geek Duck (V1.1) and Jenny (V1.2) variants for maker and education projects.

[Details](https://openhardware.directory/devices/biqu-rgbduino-uno-v1-2) | [Markdown](https://openhardware.directory/devices/biqu-rgbduino-uno-v1-2/md)

## BigTreeTech Rodent V1.0

ESP32-based CNC controller board co-developed with RatRig, featuring 4x TMC2160 drivers (up to 56V/4.7A RMS), FluidNC firmware, WiFi, RS-485, CAN, USB-C, and OLED display support for engraving machines.

[Details](https://openhardware.directory/devices/bigtreetech-rodent-v1-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-rodent-v1-0/md)

## BIQU AJAX TD1S

Filament Transmission Distance (TD) and HEX color measurement tool for 3D printing. Captures true filament color and TD values for HueForge integration to build accurate filament libraries and fix color shifts in multi-color prints.

[Details](https://openhardware.directory/devices/biqu-ajax-td1s) | [Markdown](https://openhardware.directory/devices/biqu-ajax-td1s/md)