# 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.

**87 device listed.**

## LILYGO TO-ESP8266 OLED SH1106

ESP8266 development board with 1.3-inch SH1106 OLED display, 8 digital I/O pins, CH9102 USB-serial, 3.3V operation, WiFi 802.11 b/g/n, and JST 1.25mm LiPo connector — supports ESPHome and Tasmota firmware.

[Details](https://openhardware.directory/devices/lilygo-to-esp8266-oled-sh1106) | [Markdown](https://openhardware.directory/devices/lilygo-to-esp8266-oled-sh1106/md)

## M5Stack AtomS3

Ultra-compact ESP32-S3 dev board (24x24mm) with 0.85" IPS LCD (128x128), 6-axis IMU, 8MB flash, Wi-Fi, BLE 5.0, USB-C, and Grove port. Ideal for IoT prototyping and embedded UI projects.

[Details](https://openhardware.directory/devices/m5stack-atoms3) | [Markdown](https://openhardware.directory/devices/m5stack-atoms3/md)

## Heltec WiFi LoRa 32 V4

ESP32-S3 based LoRa development board with built-in 0.96" OLED display, SX1262 LoRa transceiver, WiFi, BLE 5.0, USB-C, and LiPo battery charging. One of the most popular boards for Meshtastic.

[Details](https://openhardware.directory/devices/heltec-wifi-lora-32-v4) | [Markdown](https://openhardware.directory/devices/heltec-wifi-lora-32-v4/md)

## ESP32-CAM

ESP32-based camera dev board with OV2640 2MP sensor, microSD slot, WiFi, Bluetooth, 4MB flash, and 520KB SRAM. Ideal for DIY security cameras, timelapse, and computer vision projects.

[Details](https://openhardware.directory/devices/esp32-cam) | [Markdown](https://openhardware.directory/devices/esp32-cam/md)

## WT32-ETH01

ESP32 module with built-in Ethernet (LAN8720A PHY), WiFi, and Bluetooth. Designed for wired IoT applications, gateways, and industrial automation where reliable network connectivity is essential.

[Details](https://openhardware.directory/devices/wt32-eth01) | [Markdown](https://openhardware.directory/devices/wt32-eth01/md)

## Seeed XIAO ESP32S3 Plus

Ultra-compact ESP32-S3 development board with OV2640 camera, digital microphone, 8MB PSRAM, 8MB flash, WiFi 802.11 b/g/n, BLE 5.0, extended GPIO, and battery charging — ideal for AI and IoT edge projects.

[Details](https://openhardware.directory/devices/xiao-esp32s3-plus) | [Markdown](https://openhardware.directory/devices/xiao-esp32s3-plus/md)

## M5Stack AtomS3 Lite

Ultra-compact ESP32-S3 dev board (24x24mm) by M5Stack without display. Features WiFi, BLE 5.0, 8MB flash, Grove port, RGB LED, button, and USB-C in a tiny enclosure for IoT and embedded projects.

[Details](https://openhardware.directory/devices/m5stack-atoms3-lite) | [Markdown](https://openhardware.directory/devices/m5stack-atoms3-lite/md)

## Prokyber AI-on-the-Edge-Cam

Open-source ESP32-S3 camera board with PoE, microSD, and Stemma QT designed for AI-powered utility meter reading using the AI-on-the-edge-device firmware with TensorFlow Lite inference.

[Details](https://openhardware.directory/devices/ai-on-the-edge-cam) | [Markdown](https://openhardware.directory/devices/ai-on-the-edge-cam/md)

## ESP32-S3 Nano

Compact ESP32-S3 dev board by Waveshare in Arduino Nano form factor. Features dual-core 240MHz LX7, 16MB flash, 8MB PSRAM, WiFi, BLE 5.0, and USB-C. Drop-in ESP32-S3 upgrade for Nano-sized projects.

[Details](https://openhardware.directory/devices/esp32-s3-nano) | [Markdown](https://openhardware.directory/devices/esp32-s3-nano/md)

## iCESugar-Pro FPGA Development Board

Open-source Lattice ECP5 FPGA dev board with 24K LUTs, 32MB SDRAM, 32MB SPI flash, 106 GPIO pins in DDR SODIMM form factor. Supports fully open-source toolchain (Yosys + Nextpnr) and RISC-V Linux.

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

## duckyPad Pro

20-key open-source mechanical macropad with duckyScript engine, ESP32-S3, 1.5\" OLED, Bluetooth 5.0, hot-swap switches, dual rotary encoders, and microSD — a powerful Stream Deck alternative.

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

## ESP32 WiFi Fancontroller

ESP32-S2-based WiFi fan controller with 4 independent PWM outputs, integrated HDC1080 temperature and humidity sensor, Qwiic expansion, and native Home Assistant integration via ESPHome.

[Details](https://openhardware.directory/devices/esp32-wifi-fancontroller) | [Markdown](https://openhardware.directory/devices/esp32-wifi-fancontroller/md)

## PicoGlitcher V3

Open-source voltage glitching tool for hardware security research, based on Raspberry Pi Pico 2 (RP2350) with dual high-power MOSFETs, 4 selectable voltage levels, and adjustable Schmitt trigger inputs.

[Details](https://openhardware.directory/devices/picoglitcher-v3) | [Markdown](https://openhardware.directory/devices/picoglitcher-v3/md)

## pic0rick Pico Ultrasound Pulse-Echo System

OSHWA-certified open-source ultrasound development kit built around the Raspberry Pi Pico (RP2040). Features a 60 Msps 10-bit ADC, AD8331 time-gain amplifier, and three-level bipolar pulser for NDT and education.

[Details](https://openhardware.directory/devices/pic0rick) | [Markdown](https://openhardware.directory/devices/pic0rick/md)

## madflight FC3v2 RP2350B Flight Controller

Open-source flight controller board with RP2350B MCU, 10-DOF sensor suite (gyro, accelerometer, barometer, magnetometer), INA226 battery monitor, microSD with 4-bit SDIO, and DC-DC converter. 50.7x41.6mm, 6.3g.

[Details](https://openhardware.directory/devices/madflight-fc3v2-rp2350b) | [Markdown](https://openhardware.directory/devices/madflight-fc3v2-rp2350b/md)

## UPduino v3.1

A low-cost, fully open source FPGA development board built on the Lattice ICE40UP5K with 5.3K LUTs, on-board FTDI FT232H USB programmer, 4MB qSPI flash, and 39 GPIO pins on PMOD-compatible headers.

[Details](https://openhardware.directory/devices/upduino-v3-1) | [Markdown](https://openhardware.directory/devices/upduino-v3-1/md)

## Raspberry Pi Pico W

Wireless microcontroller board featuring the RP2040 dual-core Cortex-M0+ processor with built-in WiFi 4 and Bluetooth 5.2 (BLE). Supports MicroPython, CircuitPython, and C/C++ development.

[Details](https://openhardware.directory/devices/raspberry-pi-pico-w) | [Markdown](https://openhardware.directory/devices/raspberry-pi-pico-w/md)

## Waveshare RP2040-Zero

Ultra-compact RP2040 microcontroller board in a tiny form factor. Features dual-core Cortex-M0+ at 133 MHz, USB-C, onboard WS2812 RGB LED, and castellated pads. Raspberry Pi Pico compatible.

[Details](https://openhardware.directory/devices/rp2040-zero) | [Markdown](https://openhardware.directory/devices/rp2040-zero/md)

## LOLIN D1 Mini V3

Compact WiFi development board based on the ESP8266-12F module. Features 4 MB flash, 11 digital I/O pins, Micro-USB, and a rich shield ecosystem. One of the most popular boards for IoT projects.

[Details](https://openhardware.directory/devices/d1-mini-v3) | [Markdown](https://openhardware.directory/devices/d1-mini-v3/md)

## Blue Pill STM32F103C8T6

Popular low-cost development board based on the STM32F103C8T6 ARM Cortex-M3 microcontroller running at 72 MHz. Features 64 KB flash, 20 KB SRAM, and extensive peripheral support for embedded development.

[Details](https://openhardware.directory/devices/blue-pill-stm32) | [Markdown](https://openhardware.directory/devices/blue-pill-stm32/md)

## Raspberry Pi 5

The latest Raspberry Pi single-board computer featuring a BCM2712 quad-core Cortex-A76 processor at 2.4GHz, PCIe 2.0, dual 4K HDMI output, USB 3.0, and available in 2GB, 4GB, 8GB, and 16GB RAM configurations.

[Details](https://openhardware.directory/devices/raspberry-pi-5) | [Markdown](https://openhardware.directory/devices/raspberry-pi-5/md)

## Waveshare LuckFox Lyra Pi

A compact Linux development board based on the Rockchip RK3506 with triple-core Cortex-A7 + Cortex-M0, 512MB DDR3L, dual Ethernet with PoE, optional Wi-Fi 6 and 4G LTE, and a 40-pin GPIO header.

[Details](https://openhardware.directory/devices/waveshare-luckfox-lyra-pi) | [Markdown](https://openhardware.directory/devices/waveshare-luckfox-lyra-pi/md)

## DFRobot Maixduino AI Development Kit

RISC-V AI development board combining the Kendryte K210 AI processor with ESP32 for WiFi/BT connectivity. Includes camera and microphone for computer vision and voice recognition applications.

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

## ESP8266 ESP-01S WiFi Module

Compact ESP8266-based WiFi dev board with 1MB flash, 2 GPIO pins, and 802.11 b/g/n. Runs Arduino, MicroPython, ESPHome, and Tasmota firmware for smart home and IoT projects.

[Details](https://openhardware.directory/devices/esp8266-esp-01s) | [Markdown](https://openhardware.directory/devices/esp8266-esp-01s/md)

## WiFi Devboard for Flipper Zero

ESP32-S2-based WiFi development board for Flipper Zero enabling wireless firmware updates, Black Magic Probe debugging over USB and WiFi, and WiFi pentesting with PMKID capture and deauth capabilities.

[Details](https://openhardware.directory/devices/flipper-zero-wifi-devboard) | [Markdown](https://openhardware.directory/devices/flipper-zero-wifi-devboard/md)

## Flipper Zero Video Game Module

RP2040-powered expansion module for Flipper Zero with DVI-D video output, 6-axis IMU motion sensor, 14-pin GPIO breakout, and USB-C. Fully open-source firmware and schematics.

[Details](https://openhardware.directory/devices/flipper-zero-video-game-module) | [Markdown](https://openhardware.directory/devices/flipper-zero-video-game-module/md)

## Flipper Zero

Portable open-source multi-tool for hardware exploration, combining Sub-GHz, NFC, RFID 125kHz, infrared, iButton, BLE, and GPIO in a pocket-sized device with a 1.4" monochrome LCD.

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

## Oui-Spy

ESP32-S3 based multi-mode BLE detection and security research tool with integrated piezo buzzer, MMCX antenna connector, and seven swappable firmware modes for surveillance detection, drone tracking, and RF direction finding.

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

## Micro Journal Rev.3: Nadia

A 48-key ortholinear mechanical keyboard designed as a distraction-free writing companion for phones and tablets, powered by RP2040 with QMK/Vial firmware and dual rotary encoders.

[Details](https://openhardware.directory/devices/micro-journal-rev3-nadia) | [Markdown](https://openhardware.directory/devices/micro-journal-rev3-nadia/md)

## Makerfabs ESP32 UWB DW3000

ESP32 + DW3000 UWB development board for centimeter-accurate indoor positioning and ranging. Supports UWB channels 5 and 9, FiRa compatible, Apple U1 interoperable. WiFi and Bluetooth for data relay.

[Details](https://openhardware.directory/devices/makerfabs-esp32-uwb-dw3000) | [Markdown](https://openhardware.directory/devices/makerfabs-esp32-uwb-dw3000/md)

## Grasshopper LoRaWAN Development Board

Ultra-compact 18x45mm LoRaWAN development board from Tlera Corp featuring Murata's FCC-certified CMWX1ZZABZ-078 module with STM32L082 Cortex-M0+ MCU and SX1276 LoRa radio, drawing just 2 uA in stop mode.

[Details](https://openhardware.directory/devices/grasshopper-lorawan-development-board) | [Markdown](https://openhardware.directory/devices/grasshopper-lorawan-development-board/md)

## TrackSenger

Compact Meshtastic-compatible LoRa communicator with push-button keyboard, built around the Heltec Wireless Tracker with ESP32-S3, SX1262 LoRa, GPS, and a 0.96" TFT display for off-grid mesh messaging.

[Details](https://openhardware.directory/devices/tracksenger) | [Markdown](https://openhardware.directory/devices/tracksenger/md)

## Wemos D1 Mini (ESP8266)

Compact ESP8266-based WiFi development board with 4MB flash, 11 digital I/O pins, micro-USB, and a rich shield ecosystem. The most popular board for Tasmota and ESPHome DIY home automation projects.

[Details](https://openhardware.directory/devices/wemos-d1-mini-esp8266) | [Markdown](https://openhardware.directory/devices/wemos-d1-mini-esp8266/md)

## Olimex ESP32-POE

Open-source ESP32 development board with built-in Ethernet, Power-over-Ethernet support, micro-SD card slot, and LiPo battery connector. Ideal for wired Tasmota nodes and industrial IoT applications.

[Details](https://openhardware.directory/devices/olimex-esp32-poe) | [Markdown](https://openhardware.directory/devices/olimex-esp32-poe/md)

## Waveshare ESP32-C6-GEEK

Compact USB-A dongle development board with ESP32-C6 RISC-V MCU, 1.14\" IPS LCD, WiFi 6, BLE 5.0, Zigbee 3.0, Thread, and microSD slot for portable IoT projects.

[Details](https://openhardware.directory/devices/waveshare-esp32-c6-geek) | [Markdown](https://openhardware.directory/devices/waveshare-esp32-c6-geek/md)

## Waveshare UGV Rover

Open-source 6-wheel 4WD AI robot platform with dual-controller architecture (ESP32 + Raspberry Pi), computer vision, pan-tilt camera, ESP-NOW communication, and ROS2 support for robotics education and autonomous navigation.

[Details](https://openhardware.directory/devices/waveshare-ugv-rover) | [Markdown](https://openhardware.directory/devices/waveshare-ugv-rover/md)

## LuckFox Pico

Ultra-compact Linux SBC (51x21mm) based on Rockchip RV1103 with ARM Cortex-A7 @ 1.2GHz, RISC-V MCU co-processor, 0.5 TOPS NPU, ISP 3.2, 64MB DDR2, MIPI CSI camera, and 24 GPIO pins in a Pico form factor.

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

## Waveshare ESP32-P4-Pico

Compact Pico-form-factor development board based on the ESP32-P4 RISC-V dual-core processor at 400MHz with 32MB PSRAM, 32MB flash, MIPI-DSI/CSI interfaces, onboard ES8311 audio codec with NS4150B amplifier, microSD slot, and USB 2.0 OTG HS.

[Details](https://openhardware.directory/devices/waveshare-esp32-p4-pico) | [Markdown](https://openhardware.directory/devices/waveshare-esp32-p4-pico/md)

## Waveshare ESP32-H2-Zero

Ultra-compact castellated ESP32-H2 development board with BLE 5.2, Zigbee 3.0, Thread 1.3, and Matter support. USB-C powered with WS2812 RGB LED, 15 GPIO pins, and 4MB flash in a tiny 23.5 x 15.2mm form factor.

[Details](https://openhardware.directory/devices/waveshare-esp32-h2-zero) | [Markdown](https://openhardware.directory/devices/waveshare-esp32-h2-zero/md)

## Waveshare CM5-DUAL-ETH-BASE

Gigabit + 2.5G dual Ethernet base board for Raspberry Pi Compute Module 5 with M.2 NVMe slot, dual HDMI 4K output, dual MIPI interfaces, wide 7-36V input, EEPROM, and encryption chip for industrial IoT applications.

[Details](https://openhardware.directory/devices/waveshare-cm5-dual-eth-base) | [Markdown](https://openhardware.directory/devices/waveshare-cm5-dual-eth-base/md)

## LuckFox Pico Mini

Tiny Linux SBC (28x21mm) based on Rockchip RV1103 with ARM Cortex-A7 @ 1.2GHz, RISC-V MCU, 0.5 TOPS NPU, 64MB DDR2, MIPI CSI camera, 17 GPIO pins, and castellated-hole design for direct soldering.

[Details](https://openhardware.directory/devices/luckfox-pico-mini) | [Markdown](https://openhardware.directory/devices/luckfox-pico-mini/md)

## LuckFox Pico Zero

Feature-rich Linux SBC based on Rockchip RV1106G3 with ARM Cortex-A7, 1.0 TOPS NPU, 256MB DDR3L, 8GB eMMC, WiFi 6, Bluetooth 5.2, 40-pin RPi-compatible GPIO, MIPI CSI 4-lane camera, and onboard microphone/speaker.

[Details](https://openhardware.directory/devices/luckfox-pico-zero) | [Markdown](https://openhardware.directory/devices/luckfox-pico-zero/md)

## Waveshare ESP32-P4-WIFI6

Pico-form-factor development board combining the ESP32-P4 RISC-V dual-core at 400MHz with an ESP32-C6 co-processor for WiFi 6 and Bluetooth 5 LE. Features 32MB PSRAM, 32MB flash, MIPI-DSI/CSI, onboard audio, microSD, and USB 2.0 OTG HS.

[Details](https://openhardware.directory/devices/waveshare-esp32-p4-wifi6) | [Markdown](https://openhardware.directory/devices/waveshare-esp32-p4-wifi6/md)

## LuckFox Pico Pro

Linux SBC based on Rockchip RV1106G2 with ARM Cortex-A7 @ 1.2GHz, 0.5 TOPS NPU, 128MB DDR3L, 256MB SPI NAND Flash, 100M Ethernet (RJ45), MIPI CSI camera, 26 GPIO pins, and RTC battery header in Pico form factor.

[Details](https://openhardware.directory/devices/luckfox-pico-pro) | [Markdown](https://openhardware.directory/devices/luckfox-pico-pro/md)

## Waveshare ESP32-P4-ETH

Pico-form-factor development board with ESP32-P4 RISC-V dual-core at 400MHz, 100Mbps Ethernet via IP101 PHY, 32MB PSRAM, 32MB flash, MIPI-DSI/CSI interfaces, onboard ES8311 audio codec with amplifier, microSD, USB 2.0 OTG HS, and PoE module header.

[Details](https://openhardware.directory/devices/waveshare-esp32-p4-eth) | [Markdown](https://openhardware.directory/devices/waveshare-esp32-p4-eth/md)

## LuckFox Pico Plus

Linux SBC based on Rockchip RV1103 with ARM Cortex-A7 @ 1.2GHz, RISC-V MCU, 0.5 TOPS NPU, 64MB DDR2, 128MB NAND Flash, 10/100M Ethernet (RJ45), MIPI CSI camera, and 25 GPIO pins in a Pico form factor.

[Details](https://openhardware.directory/devices/luckfox-pico-plus) | [Markdown](https://openhardware.directory/devices/luckfox-pico-plus/md)

## LuckFox Lyra

Compact Linux SBC based on Rockchip RK3506G2 with triple-core ARM Cortex-A7 @ 1.2GHz + Cortex-M0 MCU, 128MB DDR3L, MIPI DSI display output (up to 1280x800), 24 Rockchip Matrix IO pins, and built-in audio/video codec.

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

## Waveshare ESP32-P4-WIFI6-DEV-KIT

Full-featured ESP32-P4 development board with WiFi 6 and Bluetooth 5 LE via ESP32-C6, 100Mbps Ethernet, PoE header, 3.5mm headphone jack, USB OTG HS switchable host/device, 16MB flash, 32MB PSRAM, MIPI-DSI/CSI, and 28 GPIOs.

[Details](https://openhardware.directory/devices/waveshare-esp32-p4-wifi6-dev-kit) | [Markdown](https://openhardware.directory/devices/waveshare-esp32-p4-wifi6-dev-kit/md)

## LuckFox Lyra Ultra

Feature-rich Linux SBC based on Rockchip RK3506B with triple-core ARM Cortex-A7 @ 1.2GHz + Cortex-M0, 512MB DDR3L, 8GB eMMC, 100M Ethernet, optional WiFi 6/BT 5.2, MIPI DSI display, PoE header, and 33 GPIO pins.

[Details](https://openhardware.directory/devices/luckfox-lyra-ultra) | [Markdown](https://openhardware.directory/devices/luckfox-lyra-ultra/md)

## LuckFox Lyra Zero W

Compact Linux SBC based on Rockchip RK3506B with triple-core ARM Cortex-A7 @ 1.2GHz + Cortex-M0, 512MB DDR3L, 256MB NAND Flash, WiFi 6, Bluetooth 5.2, MIPI DSI display, 28 Matrix IO pins, and 40-pin RPi-compatible header.

[Details](https://openhardware.directory/devices/luckfox-lyra-zero-w) | [Markdown](https://openhardware.directory/devices/luckfox-lyra-zero-w/md)

## Waveshare ESP32-P4-WIFI6-POE-ETH

ESP32-P4 development board with WiFi 6 and Bluetooth 5 LE via ESP32-C6, 100Mbps PoE Ethernet via IP101GRI, IPEX external antenna, USB Type-A OTG HS, 32MB PSRAM, 16MB flash, MIPI-DSI/CSI, onboard audio, and 28 GPIOs.

[Details](https://openhardware.directory/devices/waveshare-esp32-p4-wifi6-poe-eth) | [Markdown](https://openhardware.directory/devices/waveshare-esp32-p4-wifi6-poe-eth/md)

## LuckFox Lyra Plus

Compact Linux SBC based on Rockchip RK3506G2 with triple-core ARM Cortex-A7 @ 1.2GHz + Cortex-M0, 128MB DDR3L, 256MB NAND Flash, 100M Ethernet, MIPI DSI display output, 24 Rockchip Matrix IO pins, and built-in audio/video codec.

[Details](https://openhardware.directory/devices/luckfox-lyra-plus) | [Markdown](https://openhardware.directory/devices/luckfox-lyra-plus/md)

## 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 Feather nRF52 Pro

Bluetooth 5.0 LE Feather board with nRF52832 ARM Cortex M4F at 64MHz, 512KB flash, 64KB SRAM, Apache Mynewt bootloader, SWD debug port, and built-in LiPo charging. For advanced BLE 5.0 open-source applications.

[Details](https://openhardware.directory/devices/adafruit-feather-nrf52-pro) | [Markdown](https://openhardware.directory/devices/adafruit-feather-nrf52-pro/md)

## Pycom GPy

ESP32-based triple-network MicroPython board with WiFi 802.11 b/g/n, Bluetooth LE, and LTE CAT-M1/NB1 cellular. 4MB RAM, 8MB flash, 22 GPIO, breadboard-compatible. Ideal for global LTE IoT deployments.

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

## Pycom FiPy

Five-network ESP32 MicroPython board with WiFi, Bluetooth LE, LoRa, SigFox, and dual LTE-M (CAT-M1/NB1). 4MB RAM, 8MB flash, 22 GPIO. The most connected Pycom module for versatile LPWAN IoT applications.

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

## Adafruit ItsyBitsy 32u4 3V 8MHz

Ultra-compact 3.3V Arduino-compatible board with ATmega32u4 at 8MHz, native USB HID, 23 GPIO pins, 2KB RAM, 28KB flash, and Micro USB. Measures 35mm × 17mm — smaller than a Feather with equivalent AVR capability.

[Details](https://openhardware.directory/devices/adafruit-itsybitsy-32u4-3v) | [Markdown](https://openhardware.directory/devices/adafruit-itsybitsy-32u4-3v/md)

## Adafruit ItsyBitsy 32u4 5V 16MHz

Ultra-compact 5V Arduino-compatible board with ATmega32u4 at 16MHz, native USB HID, 23 GPIO pins, 2KB RAM, 28KB flash, and Micro USB. Measures 35mm × 18mm — small form factor with full Arduino Leonardo capability.

[Details](https://openhardware.directory/devices/adafruit-itsybitsy-32u4-5v) | [Markdown](https://openhardware.directory/devices/adafruit-itsybitsy-32u4-5v/md)

## Pycom LoPy4

ESP32-based quad-network MicroPython board with WiFi, Bluetooth LE, LoRa (SX1276 868/915/433MHz), and SigFox. 4MB PSRAM, 8MB flash, 24 GPIO. Can function as a nano LoRa gateway. FCC/CE certified.

[Details](https://openhardware.directory/devices/pycom-lopy4) | [Markdown](https://openhardware.directory/devices/pycom-lopy4/md)

## Adafruit ItsyBitsy M0 Express

Compact 3.3V CircuitPython/Arduino board with ATSAMD21G18 Cortex M0+ at 48MHz, 32KB RAM, 256KB flash, 2MB SPI flash, 23 GPIO with 11 analog inputs, RGB DotStar LED, native USB. Measures 36mm × 18mm.

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

## Adafruit ItsyBitsy M4 Express

High-performance compact board with ATSAMD51 Cortex M4F at 120MHz, 192KB RAM, 512KB flash, 2MB SPI flash, dual 12-bit DAC/ADC, 18 PWM outputs, AES-256 crypto, and native USB. Measures 36mm × 18mm.

[Details](https://openhardware.directory/devices/adafruit-itsybitsy-m4-express) | [Markdown](https://openhardware.directory/devices/adafruit-itsybitsy-m4-express/md)

## Adafruit Feather M4 Express

High-performance Feather with ATSAMD51J19 Cortex M4F at 120MHz, 192KB RAM, 512KB flash, 2MB SPI flash, dual 12-bit DAC/ADC, AES-256 hardware crypto, LiPo charging, 21 GPIO, and native USB HID. Feather ecosystem compatible.

[Details](https://openhardware.directory/devices/adafruit-feather-m4-express) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m4-express/md)

## Adafruit Metro M4 Express AirLift

Arduino Uno-compatible board with ATSAMD51J19 Cortex M4F at 120MHz, ESP32 AirLift WiFi co-processor with TLS/SSL, 512KB flash, 192KB RAM, 2MB QSPI flash, 25 GPIO, dual DAC/ADC, and native USB. Arduino shield compatible.

[Details](https://openhardware.directory/devices/adafruit-metro-m4-airlift) | [Markdown](https://openhardware.directory/devices/adafruit-metro-m4-airlift/md)

## Adafruit Feather nRF52840 Express

Feather board with nRF52840 ARM Cortex-M4F at 64MHz, BLE 5.0, native USB (CDC/HID/MIDI/MSC), 1MB flash, 256KB SRAM, 2MB QSPI flash, 21 GPIO, SWD debug, and LiPo charging. Supports Arduino and CircuitPython.

[Details](https://openhardware.directory/devices/adafruit-feather-nrf52840-express) | [Markdown](https://openhardware.directory/devices/adafruit-feather-nrf52840-express/md)

## Adafruit Grand Central M4 Express

Arduino Mega-form-factor board with ATSAMD51P20 Cortex M4F at 120MHz, 1MB flash, 256KB RAM, 8MB QSPI flash, 70 GPIO pins, SD card slot, 8 SERCOM, 22 PWM outputs, dual DAC/ADC, AES-256, and native USB.

[Details](https://openhardware.directory/devices/adafruit-grand-central-m4-express) | [Markdown](https://openhardware.directory/devices/adafruit-grand-central-m4-express/md)

## M5Stack FIRE V2.7

Feature-rich ESP32 IoT dev kit with 2.0" IPS display, 8MB PSRAM, 16MB flash, MPU6886 IMU, BMM150 magnetometer, 10x SK6812 RGB LEDs, microphone, speaker, microSD, 500mAh battery, and M5GO charging base.

[Details](https://openhardware.directory/devices/m5stack-fire-v2-7) | [Markdown](https://openhardware.directory/devices/m5stack-fire-v2-7/md)

## Heltec WiFi Kit 8

ESP8266-based IoT development board by Heltec with built-in 0.91-inch OLED display, Li-Po battery management, and WiFi connectivity in a compact 50.9x18.2mm form factor.

[Details](https://openhardware.directory/devices/heltec-wifi-kit-8) | [Markdown](https://openhardware.directory/devices/heltec-wifi-kit-8/md)

## Heltec CubeCell AM02 Module Plus

Ultra-compact LoRa/LoRaWAN module based on the ASR6502 SoC (ARM Cortex-M0+ @ 48MHz + SX1262), designed for SMT integration into custom IoT sensor nodes with 3.5uA deep sleep current.

[Details](https://openhardware.directory/devices/heltec-cubecell-am02-module-plus) | [Markdown](https://openhardware.directory/devices/heltec-cubecell-am02-module-plus/md)

## BeagleBone AI-64

Powerful open-source AI/ML single board computer featuring TI TDA4VM SoC with dual Arm Cortex-A72 at 2.0 GHz, 8 TOPS deep-learning accelerator, C7x DSP, 4GB LPDDR4, 16GB eMMC, USB 3.0, Gigabit Ethernet, and BeagleBone cape compatibility.

[Details](https://openhardware.directory/devices/beaglebone-ai-64) | [Markdown](https://openhardware.directory/devices/beaglebone-ai-64/md)

## BeagleBone Black

Low-cost, community-supported ARM Cortex-A8 development platform with 512MB DDR3L, 4GB eMMC, HDMI, USB, 10/100M Ethernet, 2x PRUs, and expandable via BeagleBone capes. Boots Linux in under 10 seconds.

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

## BeagleBone Black Industrial

Industrial-rated BeagleBone Black with extended temperature range (-40°C to +85°C), TI Sitara AM3358 ARM Cortex-A8 at 1 GHz, full cape and software compatibility, for harsh environment deployments.

[Details](https://openhardware.directory/devices/beaglebone-black-industrial) | [Markdown](https://openhardware.directory/devices/beaglebone-black-industrial/md)

## BeagleV-Ahead

Open-source RISC-V single board computer with Alibaba T-Head TH1520 quad-core Xuantie C910 at 2GHz, 4 TOPS NPU, 4GB LPDDR4, 16GB eMMC, WiFi/Bluetooth, Gigabit Ethernet, micro-HDMI, and BeagleBone cape headers.

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

## BeagleV-Fire

RISC-V + FPGA single board computer powered by Microchip PolarFire MPFS025T with 4x RV64GC U54 cores at 667MHz, 23K FPGA logic elements, 2GB LPDDR4, 16GB eMMC, Gigabit Ethernet, M.2 E-Key, and BeagleBone cape headers.

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

## BigTreeTech BTT Pi V1.2

Single board computer by BigTreeTech with Allwinner H616 quad-core Cortex-A53, 1GB DDR3L RAM, WiFi, 100Mbps Ethernet, and 40-pin GPIO. Drop-in Raspberry Pi CM4 alternative for Klipper 3D printing.

[Details](https://openhardware.directory/devices/bigtreetech-btt-pi-v1-2) | [Markdown](https://openhardware.directory/devices/bigtreetech-btt-pi-v1-2/md)

## BigTreeTech CB2

Compute module by BigTreeTech powered by Rockchip RK3566 quad-core Cortex-A55 at 1.8GHz, 2GB/4GB LPDDR4, 32GB eMMC, Gigabit Ethernet, WiFi 5 (802.11ac), and Bluetooth 5.2. CM4-form-factor.

[Details](https://openhardware.directory/devices/bigtreetech-cb2) | [Markdown](https://openhardware.directory/devices/bigtreetech-cb2/md)

## BigTreeTech PAD 7

7-inch all-in-one 3D printer control panel with 1024x600 IPS touchscreen, pre-installed CB1 core board running Klipper, Ethernet, WiFi, 3x USB 2.0, CAN bus, and built-in speaker.

[Details](https://openhardware.directory/devices/bigtreetech-pad-7) | [Markdown](https://openhardware.directory/devices/bigtreetech-pad-7/md)

## Libre Computer Alta

Libre Computer Alta (AML-A311D-CC) — Amlogic A311D hexa-core SBC with 4GB LPDDR4, 5 TOPS NPU, Mali-G52 GPU, 4× USB 3.0, Gigabit Ethernet with PoE, and 4K HDR HDMI 2.0 in a Pi-compatible form factor.

[Details](https://openhardware.directory/devices/libre-computer-alta) | [Markdown](https://openhardware.directory/devices/libre-computer-alta/md)

## Libre Computer Solitude

Libre Computer Solitude (AML-S905D3-CC) — Amlogic S905D3 quad-core Cortex-A55 SBC with 2/4GB LPDDR4, 1.2 TOPS NPU, 4× USB 3.0, Gigabit Ethernet with PoE, and 4K HDR HDMI 2.0 in a Pi-compatible layout.

[Details](https://openhardware.directory/devices/libre-computer-solitude) | [Markdown](https://openhardware.directory/devices/libre-computer-solitude/md)

## Pine64 PineCone BL602

Open-source RISC-V evaluation board powered by the Bouffalo Lab BL602 WiFi+BLE5 SoC. Features 276KB SRAM, 2MB flash, USB-C with CH340 serial bridge, onboard RGB LED, JTAG header, and PCB antenna. Supports Arduino, NuttX, FreeRTOS, Rust, and OpenBeken firmware. Priced from $3.99.

[Details](https://openhardware.directory/devices/pine64-pinecone-bl602) | [Markdown](https://openhardware.directory/devices/pine64-pinecone-bl602/md)

## Milk-V Mars

Credit card-sized RISC-V SBC with quad-core StarFive JH7110 @ 1.5GHz, up to 8GB LPDDR4, Gigabit Ethernet with PoE, 40-pin GPIO, 4K HDMI. Raspberry Pi form factor.

[Details](https://openhardware.directory/devices/milk-v-mars) | [Markdown](https://openhardware.directory/devices/milk-v-mars/md)

## Milk-V Duo

Ultra-compact RISC-V dev board with dual-core CV1800B SoC, 64MB RAM, 0.5 TOPS TPU, running Linux and RTOS simultaneously. Just 21x51mm, starting at $5.

[Details](https://openhardware.directory/devices/milk-v-duo) | [Markdown](https://openhardware.directory/devices/milk-v-duo/md)

## Pine64 PineNut Model-01S

Ultra-compact BL602 RISC-V WiFi+BLE5 IoT module in ESP-01S form factor with 8-pin through-hole header. Features 276KB SRAM, 2MB flash, onboard RGB LED, and PCB antenna. Supports Arduino, NuttX, FreeRTOS, and OpenBeken firmware. Priced from $1.99.

[Details](https://openhardware.directory/devices/pine64-pinenut-01s) | [Markdown](https://openhardware.directory/devices/pine64-pinenut-01s/md)

## Milk-V Duo S

Compact RISC-V/ARM dev board with SG2000 SoC, 512MB RAM, optional WiFi 6/BT5, dual MIPI CSI cameras, 0.5 TOPS TPU. Runs Linux and RTOS simultaneously.

[Details](https://openhardware.directory/devices/milk-v-duo-s) | [Markdown](https://openhardware.directory/devices/milk-v-duo-s/md)

## Milk-V Meles

RISC-V SBC with quad-core T-Head TH1520 @ 1.85GHz, up to 16GB LPDDR4X, 4 TOPS NPU, WiFi 5/BT 5.2, 4K HDMI, Vulkan GPU. Credit card-sized form factor.

[Details](https://openhardware.directory/devices/milk-v-meles) | [Markdown](https://openhardware.directory/devices/milk-v-meles/md)

## Pine64 PineNut Model-12S

BL602 RISC-V WiFi+BLE5 stamp module with 16 castellated pads for SMT integration. Exposes 11 GPIOs with SPI, I2C, UART, SDIO, JTAG, ADC, and DAC. Features 276KB SRAM, 2MB flash, and PCB antenna. Priced from $1.99.

[Details](https://openhardware.directory/devices/pine64-pinenut-12s) | [Markdown](https://openhardware.directory/devices/pine64-pinenut-12s/md)

## Pine64 Ox64

Pico-sized RISC-V SBC powered by the Bouffalo Lab BL808 triple-core SoC with WiFi, BLE 5.0, and Zigbee. Features 64MB PSRAM, up to 16MB flash, microSD slot, USB-C with MIPI-CSI camera support, and 26 GPIO pins. Runs Linux, NuttX, and FreeRTOS. Priced from $6.

[Details](https://openhardware.directory/devices/pine64-ox64) | [Markdown](https://openhardware.directory/devices/pine64-ox64/md)

## Pine64 Oz64

RISC-V and ARM dual-ISA single board computer powered by the Sophgo SG2000 SoC with 512MB DDR3, WiFi 6, BLE 5.2, 10/100 Ethernet, dual MIPI-CSI camera ports, and 0.5 TOPS NPU. Hardware switch selects between RISC-V and ARM boot. Priced from $12.99.

[Details](https://openhardware.directory/devices/pine64-oz64) | [Markdown](https://openhardware.directory/devices/pine64-oz64/md)