Open Hardware Directory

Coin-sized ESP32-C3 RISC-V IoT development board with WiFi, BLE 5.0, integrated LiPo charging, 13 GPIO pins, and USB-C in a 25x20.5mm form factor.

The Raspberry Pi Compute Module 3+ is a SODIMM-form-factor system-on-module with the BCM2837B0 quad-core Cortex-A53 at 1.2GHz, 1GB LPDDR2 RAM, and eMMC storage variants of 8GB, 16GB, 32GB, or the stor

Feather-format ATSAMD21 ARM Cortex-M0+ data logger at 48 MHz, 3.3V with microSD slot, 256KB flash, 32KB RAM, LiPo charging, native USB, and 12-bit ADC — 32-bit power for field data collection.

Credit-card-tiny Linux SBC with a quad-core Cortex-A53 at 1 GHz, 512 MB RAM, 2.4 GHz WiFi, Bluetooth 4.2, a 40-pin GPIO header footprint, mini HDMI, and a CSI camera connector.

High-performance Arduino-compatible board powered by the NXP iMX RT1011 Cortex-M7 at 500 MHz, with 8MB QSPI flash, microSD slot, STEMMA QT, and USB-C.

A Raspberry Pi Zero form-factor development board based on the RP2040 dual-core Cortex-M0+ MCU with 16MB flash, Mini HDMI (DVI) output via PIO bitbanging, USB-C, PIO-USB host port, microSD card slot,

ESP32-C6 based 2-channel AC relay module with WiFi 6, Zigbee 3.0, and Thread support. Compact relay board compatible with Arduino and ESPHome for smart home AC switching up to 10A per channel.

Mini-ITX RISC-V board with quad-core SiFive P550 @ 1.8GHz (ESWIN EIC7700X), up to 32GB LPDDR5, 19.95 TOPS NPU, 8K video codec, PCIe x8 slot, SATA3.

Open-source ROS2 AI robot with tracked chassis, Raspberry Pi 4B/5, ESP32 sub-controller, 5MP camera with pan-tilt, IMU, and support for LiDAR expansion. Programmable via Python, OpenCV, and ROS2.

LILYGO T-Mini E-Paper S3 is a compact ESP32-S3 board with a 1.02-inch 128×80 e-paper display, 4MB flash, 2MB PSRAM, WiFi, BLE 5, TF card slot, and support for 18350 battery. Available in 868MHz and 91

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 fact

Espressif ESP32-H2 MINI module with 4MB flash and PCB antenna, supporting Bluetooth 5 LE, Zigbee 3.0, Thread, and Matter — a compact bare module for custom PCB designs without Wi-Fi.

Solar-powered nRF52840 + SX1262 LoRa dev board with integrated BMS supporting 1-4 cell lithium batteries, MPPT solar charging, and USB PD3.0. Designed for Meshtastic solar nodes.

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.

Compact Rockchip RK3328 SBC with up to 4GB DDR4, eMMC, microSD, Gigabit + Fast Ethernet, USB 3.0, optional WiFi/BT, and USB-C power — a versatile small Linux board for networking and IoT.

ESP32-S2 Feather with an onboard BME280 temperature, humidity, and barometric pressure sensor, plus 4 MB flash, 2 MB PSRAM, native USB-C, STEMMA QT, and LiPoly charging.

ESP32-S3 based air quality monitor with SEN55 particulate/VOC sensor, SCD40 CO2 sensor, 1.54" e-ink display, 600mAh battery, and Grove connector.

ATSAMD21G18 ARM Cortex-M0+ Feather board with RFM69HCW sub-GHz radio at 868/915 MHz. Up to +20 dBm TX power, AES-128 encryption, 256KB flash, 32KB RAM, native USB, and built-in LiPo charger.

Compact ESP32-S3 development board with wired Ethernet (W5500 SPI), WiFi, BLE, microSD slot, and optional PoE and camera shields for reliable networked IoT edge nodes.

The ODROID M1 is a maker-focused single-board computer from Hardkernel powered by the Rockchip RK3568 quad-core SoC with up to 8GB LPDDR4 RAM and M.2 NVMe support. It combines industrial-grade feature

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

Coin-sized (25×20.5mm) ESP32-C6 wearable dev board with WiFi 6, BLE 5, Thread, Zigbee, Matter, integrated LiPo charger, and 14µA deep sleep — for $4.90.

ESP32-S3 walkie-talkie development board with SA868 UHF/VHF radio module, 0.96" OLED display, rotary encoder, WiFi, BLE, and 18650 battery support for two-way radio projects.

CAN bus control board for the Enraged Rabbit Carrot Feeder (ERCF) multi-material system. Features STM32G0B1 MCU, 4 EZ stepper driver slots, USB/CAN connectivity, and full Klipper support.

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, FreeRT