Open Hardware Directory

Pro Micro drop-in replacement wireless keyboard controller built on the nRF52840 with BLE 5.0, onboard LiPo charger, mid-mount USB-C, and UF2 bootloader. The most popular controller for ZMK wireless s

Breadboard-friendly open-source ESP32-C6 dev board with WiFi 6, Thread, Zigbee, BLE 5, built-in LiPo charger, and dual USB-C — all for under €9.

ESP32 plant sensor board with capacitive soil moisture, soil fertility, BH1750 light sensor, and DHT11/BME280 temperature/humidity — WiFi-connected smart plant care for gardens and greenhouses.

ARM Cortex-M0+ dev board with Bluetooth LE (nRF51822) in the compact Feather form factor. Features 256KB flash, 32KB RAM, native USB, and a built-in LiPo charger for wireless wearable and IoT projects

ESP32-P4 dual-core RISC-V AI development kit with hardware H.264 encoding at 1080p@30fps, MIPI CSI/DSI camera and display interfaces, ESP32-C6 WiFi 6 coprocessor, 32MB PSRAM, 16MB flash, PDM microphon

Intelligent power management module with ESP8684 MCU, 4MB flash, 2.4GHz WiFi, and dual USB outputs. Enables remote power control, consumption monitoring, countdown shutdown, and Home Assistant integra

Full-featured industrial carrier board for TQ-Systems TQMa8MPxL SOM with NXP i.MX 8M Plus, 4GB LPDDR4, 16GB eMMC, PCIe, SATA, dual Gigabit Ethernet, and 12V DC supply, designed for demanding industria

Intelligent wireless LoRaWAN DTU with isolated RS485 interface, powered by STM32WLE5CCU6 ARM Cortex-M4 MCU with integrated Sub-GHz radio. Wide 6-36V input for industrial deployment.

Compact castellated ESP32-S3 development board with Semtech LR1121 multi-band LoRa transceiver supporting Sub-GHz and 2.4GHz bands, WiFi, BLE 5.0, and Meshtastic compatibility in a 41x21mm form factor

ESP8266-based WiFi transceiver expansion module for BTT 3D printer control boards. Available in ESP12S and ESP-07 variants, enabling wireless connectivity and remote control via serial UART.

RP2040-powered 3×4 mechanical macropad with 12 NeoPixels, a 128×64 OLED display, rotary encoder, speaker, and STEMMA QT — fully programmable via CircuitPython or Arduino.

Espressif audio and multimedia development board with ESP32-S3, dual-microphone array for far-field wake-word detection, camera support, LCD interface, microSD, and Wi-Fi + BLE.

ESP32 board with SIM800L 2G GSM/GPRS modem for SMS alerts, voice calls, and cellular data — ideal for remote monitoring and IoT projects needing cellular fallback on a budget.

An ultra-compact Linux SBC powered by Rockchip RK3308B with quad-core Cortex-A35 at 1.3GHz, 512MB DDR3, 8GB eMMC, 100M Ethernet, optional Wi-Fi 6 and PoE, and an integrated audio codec with 8-channel

Industrial ESP32-S3 controller with 8-channel optocoupler-isolated digital inputs (5-36V), 8-channel Darlington outputs (500mA each), PoE Ethernet (W5500), isolated RS-485 and CAN bus, RTC, and DIN ra

The ODROID C4 is a capable single-board computer from Hardkernel powered by the Amlogic S905X3 quad-core Cortex-A55 SoC with 4GB DDR4 RAM. It offers USB 3.0, Gigabit Ethernet, and eMMC support at an a

Ultra-affordable RP2350 dual-architecture development board with switchable ARM Cortex-M33 / RISC-V cores, LiPo charging, 11 GPIO pins, and USB-C in a 25x20.5mm package.

DIN-rail mountable Linux IoT hub by JetHome, powered by the Amlogic S905W SoC with 2GB DDR4, 8GB eMMC, WiFi 802.11n, Bluetooth 4.0, Gigabit Ethernet, and 12V DC — compact smart home controller for pan

ESP32-S3 development board with a 1.64" ICNA3311 AMOLED display at 280×456 resolution, 16MB Flash, 8MB PSRAM, Wi-Fi and Bluetooth 5 LE connectivity.

High-end ESP32-S3 Ethernet development board with W5500 SPI Ethernet, Power-over-Ethernet support, 16MB flash, 8MB PSRAM, and modular LoRa/LTE expansion shield system.

The ODROID N2+ is a powerful single-board computer from Hardkernel featuring the Amlogic S922X hexa-core SoC, 4GB DDR4 RAM, and Gigabit Ethernet. It excels as a media center, home automation hub, or g

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.

ESP32-WROVER-E development board with A7670E LTE Cat-1 modem supporting voice calls, SMS, and GPS positioning. Available with multiple regional frequency variants for global 4G deployments.

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.

Ultra-compact ESP32-S3 board with a 0.85-inch GC9107 IPS display (128×128), 2MB PSRAM, WiFi, BLE 5.0, and USB-C — one of the smallest ESP32-S3 development boards available.