# 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. **16 device listed.** ## CUBEEK CubeSat Educational Kit Open-source 1U CubeSat educational kit powered by Arduino Pro Mini with LoRa communication, multi-sensor payload (IMU, barometer, GPS, temperature), solar-powered EPS, and ground station dashboard for learning satellite engineering. [Details](https://openhardware.directory/devices/cubeek-cubesat-educational-kit) | [Markdown](https://openhardware.directory/devices/cubeek-cubesat-educational-kit/md) ## AVR-HF ADX-MI3 Pre-built digital mode QRP transceiver for amateur radio, supporting FT8, FT4, JS8, and WSPR on HF bands from 160m to 6m with ~5W output, OLED display, and single USB-C cable operation. [Details](https://openhardware.directory/devices/avr-hf-adx-mi3) | [Markdown](https://openhardware.directory/devices/avr-hf-adx-mi3/md) ## DFRobot Beetle CM-32U4 Ultra-compact Arduino Leonardo-compatible microcontroller board with ATmega32U4, integrated lithium battery charging, and native USB in a tiny 22x20.5mm form factor. [Details](https://openhardware.directory/devices/dfrobot-beetle-cm-32u4) | [Markdown](https://openhardware.directory/devices/dfrobot-beetle-cm-32u4/md) ## DFRobot Beetle BLE Ultra-compact Arduino Uno-compatible board with BLE 4.0 (CC2540), ATmega328P, sewable gold-plated I/O pads, and wireless programming in a 28.8x33.1mm wearable form factor. [Details](https://openhardware.directory/devices/dfrobot-beetle-ble) | [Markdown](https://openhardware.directory/devices/dfrobot-beetle-ble/md) ## DFRobot FireBeetle 328P BLE 4.1 Low-power Arduino-compatible board with ATmega328P and Dialog BLE 4.1 chip, featuring 14 digital I/O, 6 analog inputs, wireless OTA programming, 25uA deep sleep, onboard LiPo charging, and dual interrupt wakeup in a compact 58x29mm form factor. [Details](https://openhardware.directory/devices/dfrobot-firebeetle-328p-ble) | [Markdown](https://openhardware.directory/devices/dfrobot-firebeetle-328p-ble/md) ## DFRobot Beetle Board The original coin-sized Arduino Leonardo-compatible board with ATmega32U4, native USB, 10 digital and 5 analog pins, and sewable gold-plated pads in a 20x22mm form factor. [Details](https://openhardware.directory/devices/dfrobot-beetle-board) | [Markdown](https://openhardware.directory/devices/dfrobot-beetle-board/md) ## 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) ## Seeeduino Cloud Arduino Yun-compatible board combining ATmega32u4 with a Dragino HE Linux WiFi module running OpenWRT. Features 802.11 b/g/n WiFi, Ethernet, 14 digital I/O pins, and USB host for IoT gateway applications. [Details](https://openhardware.directory/devices/seeeduino-cloud) | [Markdown](https://openhardware.directory/devices/seeeduino-cloud/md) ## Adafruit Feather 32u4 RFM69HCW 868/915 MHz ATmega32u4 Feather board with RFM69HCW sub-GHz radio supporting 868/915 MHz with up to +20 dBm transmit power, AES-128 encryption, and 100mA LiPo charger for long-range IoT sensor networks. [Details](https://openhardware.directory/devices/adafruit-feather-32u4-rfm69hcw-868-915) | [Markdown](https://openhardware.directory/devices/adafruit-feather-32u4-rfm69hcw-868-915/md) ## Adafruit Feather 32u4 RFM69HCW 433 MHz ATmega32u4 Feather board with RFM69HCW sub-GHz radio at 433 MHz with up to +20 dBm transmit power, AES-128 encryption, and built-in LiPo charger for long-range sensor networks in the 433 MHz ISM band. [Details](https://openhardware.directory/devices/adafruit-feather-32u4-rfm69hcw-433) | [Markdown](https://openhardware.directory/devices/adafruit-feather-32u4-rfm69hcw-433/md) ## Adafruit Feather 32u4 RFM95 LoRa 868/915 MHz ATmega32u4 Feather board with RFM95W SX1276 LoRa radio for 868/915 MHz long-range communication. Achieves 2+ km range, supports spreading factors SF6-SF12, and includes a built-in LiPo charger. [Details](https://openhardware.directory/devices/adafruit-feather-32u4-rfm95-lora-868-915) | [Markdown](https://openhardware.directory/devices/adafruit-feather-32u4-rfm95-lora-868-915/md) ## Adafruit Feather 32u4 RFM96 LoRa 433 MHz ATmega32u4 Feather board with RFM96W SX1278 LoRa radio for 433 MHz long-range communication. Achieves 2+ km range with quarter-wave antennas, supports LoRaWAN, and includes a built-in LiPo charger. [Details](https://openhardware.directory/devices/adafruit-feather-32u4-rfm96-lora-433) | [Markdown](https://openhardware.directory/devices/adafruit-feather-32u4-rfm96-lora-433/md) ## Arduino UNO Mini Limited Edition Miniaturised collector's Arduino UNO with ATmega328P at 16 MHz in a 34.2 × 26.7 mm form factor with USB-C, individually numbered and signed by Arduino's founders. [Details](https://openhardware.directory/devices/arduino-uno-mini-limited-edition) | [Markdown](https://openhardware.directory/devices/arduino-uno-mini-limited-edition/md) ## Arduino Uno R3 The quintessential beginner microcontroller board with ATmega328P @ 16MHz, 32KB Flash, 2KB SRAM, 14 digital I/O, 6 analog inputs, USB-B for programming, DC barrel jack, and the R3 expanded shield header. Open-source hardware. [Details](https://openhardware.directory/devices/arduino-uno-r3) | [Markdown](https://openhardware.directory/devices/arduino-uno-r3/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 MicroProbe V2.0 Compact automatic bed leveling probe for 3D printers including Ender-3, B1, and H2 extruder platforms. Supports Voron Stealthburner, EVA, and other popular toolhead mounts. Open source hardware. [Details](https://openhardware.directory/devices/bigtreetech-microprobe-v2-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-microprobe-v2-0/md)