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Open Hardware Directory

Find Devices Flashable with Your Own Firmware.

Build your own ideas using ready-made boards — no electrical engineering degree required. Flash your firmware, customise the hardware, and make it do exactly what you want.

 

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781devices

WT32-ETH01

Dev Board
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.

ESP32520KB SRAM4MB12 GPIOWiFi 802.11 b/g/nBLE BLE 4.2Ethernet 10/100 Mbps
~$15View

Khadas VIM4

Khadas VIM4

Amlogic A311D2 SBC with 8GB LPDDR4X, WiFi 6, HDMI 2.1 output + input, 3.2 TOPS NPU, and a 40-pin GPIO header — Khadas's flagship single-board computer for AI, media, and smart home applications.

ARM Cortex-A73 ×4 @ 2.2GHz + Cortex-A53 ×4 @ 2.0GHz8GB LPDDR4X @ 2016MHz32GB eMMC 5.1 + 32MB SPI FlashWiFi 802.11 a/b/g/n/ac/ax (WiFi 6), 2×2 MIMO (AP6275S)BLE Bluetooth 5.1 (AP6275S)Ethernet Gigabit Ethernet (10/100/1000M)
~$220View

Heltec Vision Master E290

Heltec Vision Master E290

ESP32-S3 development board with 2.9-inch e-ink display and optional SX1262 LoRa radio, featuring Raspberry Pi GPIO header, Meshtastic support, and 18uA deep sleep for battery-powered IoT and mesh netw

Xtensa LX7 dual-core @ 240MHz, FPU, vector instructions, AESSHA hardware crypto512KB SRAM16KB RTC SRAM16MB (QSPI, W25Q128)WiFi 802.11 b/g/nBLE BLE 5.0
~$20View

LILYGO T-Display P4

ESP32 P4
LILYGO T-Display P4

High-performance ESP32-P4 development board with dual-core 360MHz RISC-V, 4.1" AMOLED or 4.05" TFT touchscreen, 2MP camera, SX1262 LoRa, GPS, 9-axis IMU, and ESP32-C6 for Wi-Fi 6 and Bluetooth 5.

ESP32-P4 (Dual-core RISC-V 360MHz + 40MHz)16MBWiFi 802.11ax (WiFi 6)BLE BLE 5.0
~$97View

LuckFox Pico Pi

Dev Board
LuckFox Pico Pi

Rockchip RV1106 Linux development board with 40-pin RPi-compatible GPIO, 100M Ethernet, optional WiFi 6, 4G LTE M.2 slot, MIPI CSI camera, 4x USB-A host ports, 8GB eMMC, audio jack, and onboard microp

ARM Cortex-A7 @ 1.2GHz + RISC-V MCU, 1 TOPS NPU (Pi A) / 0.5 TOPS (Pi B)256MB DDR3L8GB eMMCWiFi WiFi 6 (802.11ax) 2.4/5GHzBLE Bluetooth 5.2Ethernet 10/100 Mbps
~$42View

Adafruit Feather 32u4 RFM95 LoRa 868/915 MHz

Dev Board
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.

ATmega32u4 @ 8 MHz2.5KB SRAM32KB
~$35View

BigTreeTech CB2

Single Board Computer
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.

Rockchip RK3566 Quad-core Cortex-A55 @ 1.8GHz2GB LPDDR432GB eMMC40-pin GPIOWiFiBLEEthernet

Heltec HT-M2802 Indoor LoRa Gateway

Heltec HT-M2802 Indoor LoRa Gateway

Indoor edge computing LoRaWAN gateway with Rockchip RK3566 quad-core Cortex-A55 processor, SX1303+SX1250 8-channel LoRa radio, 2GB DDR4, 32GB eMMC, Gigabit Ethernet, dual-band WiFi, Bluetooth 4.0, and

ARM Cortex-A55 quad-core @ 1.8GHz, Mali-G52 GPU, 1 TOPS NPU2GB DDR432GB eMMC 5.1WiFi 802.11 b/g/n 2.4GHz/5GHzBLE BT 4.0 (HS), BLEEthernet Gigabit (10/100/1000M)
~$199View

DFRobot Beetle RP2040

DFRobot Beetle RP2040

Compact RP2040 dual-core ARM Cortex-M0+ development board with USB-C, 8 GPIO pins, and beginner-friendly immersion gold pads in a 27x20mm form factor.

ARM Cortex-M0+ dual-core @ 133MHz264KB SRAM2MB

Adafruit KB2040

Keyboard Pcb
Adafruit KB2040

Arduino Pro Micro-compatible RP2040 keyboard controller with 8 MB flash, 20 GPIO, STEMMA QT, castellated USB pads, NeoPixel, and QMK/KMK/CircuitPython support for custom mechanical keyboards.

ARM Cortex-M0+ dual-core @ 125 MHz (RP2040)264 KB SRAM8MB SiP

FaikOut WiFi Aircon Controller

IoT Controller
FaikOut WiFi Aircon Controller

Open-source ESP32-S3 WiFi controller for Daikin air conditioners with local-only control via MQTT and Home Assistant. Replaces cloud-dependent Daikin WiFi modules with privacy-first, no-internet-requi

ESP32-S3-PICO-1 Xtensa LX7 dual-core @ 240MHz512KB SRAM8MBWiFi 802.11 b/g/nBLE BLE 5.0
~$42View

Adafruit ItsyBitsy RP2040

Microcontroller Board
Adafruit ItsyBitsy RP2040

Tiny 36×18mm breadboard-friendly board with Raspberry Pi RP2040 dual-core Cortex-M0+ @ 133MHz, 264KB SRAM, 8MB Flash, 23 GPIO, 4 ADC, 2 PIO peripherals, and Micro-USB. Runs CircuitPython and MicroPyth

Dual ARM Cortex-M0+ @ 133MHz (RP2040)264KB SRAM8MB SPI FlashWiFi falseBLE falseZigbee falseEthernet false
~$10View

LILYGO T-Connect

Dev Board
LILYGO T-Connect

ESP32-S3 industrial communication board with three RS485 ports and one CAN bus — enables multi-protocol data switching for automation, sensor networks, and legacy equipment integration.

ESP32-S3-R8 Xtensa LX7 dual-core @ 240MHz512KB SRAM16MBWiFi 802.11 b/g/nBLE BLE 5.0
~$38View

Waveshare ESP32-S3-RS485-CAN

Dev Board
Waveshare ESP32-S3-RS485-CAN

Industrial ESP32-S3 control board with isolated RS-485 and CAN bus interfaces, 7-36V wide voltage input, PCF85063 RTC, DIN rail enclosure, and WiFi/Bluetooth for industrial IoT and automation applicat

Xtensa LX7 dual-core @ 240MHz, FPU, AI vector instructions512KB SRAM16MBWiFi 802.11 b/g/nBLE BLE 5.0
~$19View

makerdiary nRF52840-MDK USB Dongle

nRF52840
makerdiary nRF52840-MDK USB Dongle

Open-source multi-protocol wireless USB dongle based on the Nordic nRF52840 SoC. Supports BLE 5.4, Thread, Zigbee, 802.15.4, NFC, and USB 2.0 with UF2 drag-and-drop bootloader. Priced at $12.99.

ARM Cortex-M4F @ 64MHz, FPU, DSP, CryptoCell-310 (RSA, ECC, SHA-256, AES)256 KB SRAM1 MBBLE Bluetooth 5.4 BLE + MeshZigbee Zigbee 3.0
~$13View

LuckFox Pico WebBee

Dev Board
LuckFox Pico WebBee

Ultra-compact Rockchip RV1103 Linux micro development board in USB dongle form factor with 10/100Mbps Ethernet, 64MB DDR2, 128MB NAND flash, and ABS protective case. Ideal for lightweight web servers,

ARM Cortex-A7 @ 1.2GHz + RISC-V MCU, 0.5 TOPS NPU64MB DDR2128MB SLC NANDEthernet 10/100 Mbps
~$20View

FriendlyElec NanoPi R3S LTS

FriendlyElec NanoPi R3S LTS

Compact 57×57mm dual-GbE router board with RK3566 quad-core Cortex-A55, up to 2GB RAM, 32GB eMMC, HDMI, and USB-C power — the long-term-support mini network appliance from FriendlyElec.

ARM Cortex-A55 ×4 @ 1.8GHz1GB / 2GB LPDDR4X32GB eMMC (optional)Ethernet 1× Native GbE + 1× PCIe GbE (dual Gigabit)
~$35View

M5Stack GPS Module V2.1

module
M5Stack GPS Module V2.1

ATGM336H-based GPS/GNSS module supporting GPS, BeiDou, Galileo, GLONASS with external active antenna, DIP switch for TX/RX config, and PPS output.

AT6668 GNSS SoCN/AN/A
~$22View

BigTreeTech CEB CAN Expansion Board

Expansion Board
BigTreeTech CEB CAN Expansion Board

CAN bus power distribution and expansion board for BigTreeTech toolhead boards. Provides multiple 24V + CAN pass-through ports to daisy-chain toolhead boards in Klipper 3D printer setups.

Passive (no MCU)NoNo
~$14View

Grasshopper LoRaWAN Development Board

Dev Board
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 mo

ARM Cortex-M0+ single-core @ 32MHz, HW crypto (AES-128/256)20KB SRAM192KB19 GPIO
~$40View

LILYGO T-HMI

Dev Board
LILYGO T-HMI

ESP32-S3 HMI development board with a 2.8-inch resistive touchscreen, GROVE connectors, 16MB flash, 8MB PSRAM, and USB-C — designed for industrial HMI panels and interactive control interfaces.

Xtensa LX7 dual-core @ 240MHz, FPU, AI vector extensions, HW crypto (AES/SHA/RSA)512KB SRAM16MBWiFi 802.11 b/g/nBLE BLE 5.0
~$18View

LuckFox Omni3576

sbc
LuckFox Omni3576

Rockchip RK3576 octa-core edge computing SBC with 6 TOPS NPU, dual Gigabit Ethernet, WiFi 6, dual MIPI CSI camera inputs, HDMI 2.1 4K@120Hz output, and M.2 NVMe slot. Supports Debian, Ubuntu, Android

ARM Cortex-A72 4x @ 2.3GHz + Cortex-A53 4x @ 2.2GHz, Mali G52 MC3 GPU, 6 TOPS NPU4GB LPDDR4X32GB eMMCWiFi WiFi 6 (802.11ax) 2.4/5GHzBLE BLE 5.0Ethernet 2x Gigabit (1x PoE IEEE 802.3af)
~$130View

Raspberry Pi Zero v1.3

Dev Board
Raspberry Pi Zero v1.3

Ultra-compact $10 single-board Linux computer with BCM2835 ARM at 1 GHz, 512MB RAM, micro SD, mini HDMI, two micro USB ports, and camera connector — the original Raspberry Pi Zero with camera support

BCM2835 ARM11 @ 1 GHz512 MBnone (microSD)
~$10View

Heltec HT1303

LoRa Concentrator Module
Heltec HT1303

A mini-PCIe LoRaWAN concentrator module based on Semtech SX1303 + SX1250, enabling easy integration of LPWAN gateway capabilities into routers, Raspberry Pi, or other platforms with standard mini-PCIe

SX1303SX1250N/A (host-dependent)N/A (host-dependent)
~$49View

M5Stack CoreS3

Dev Board
M5Stack CoreS3

Third-generation M5Stack Core with ESP32-S3 dual-core 240MHz, 2.0\" capacitive touch IPS display, GC0308 camera, dual microphones, 1W speaker, BMI270 IMU, BMM150 magnetometer, proximity sensor, RTC, 5

Xtensa LX7 dual-core @ 240MHz, FPU, AI instructions512KB SRAM16MBWiFi 802.11 b/g/nBLE BLE 5.0
~$73View

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