# 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.

**358 device listed.**

## LILYGO T-Watch S3

Open-source ESP32-S3 smartwatch with LoRa, 1.3" 240×240 IPS touchscreen, haptic feedback, accelerometer, speaker, microphone, IR transmitter, and 1500mAh battery. Supports Meshtastic, ESPHome, Arduino, and MicroPython.

[Details](https://openhardware.directory/devices/lilygo-t-watch-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t-watch-s3/md)

## LILYGO T-Display

Compact ESP32-PICO-D4 development board with integrated 1.14-inch ST7789V IPS LCD (135×240, 260 PPI), WiFi, Bluetooth 4.2/BLE, and Arduino/MicroPython support.

[Details](https://openhardware.directory/devices/lilygo-t-display) | [Markdown](https://openhardware.directory/devices/lilygo-t-display/md)

## LILYGO T-Beam

ESP32 development board combining LoRa radio (SX1276/SX1278), u-blox NEO-6M GPS, 0.96" OLED display, and 18650 battery support — the go-to board for Meshtastic and LoRa tracking projects.

[Details](https://openhardware.directory/devices/lilygo-t-beam) | [Markdown](https://openhardware.directory/devices/lilygo-t-beam/md)

## LILYGO T-Display S3

ESP32-S3 development board with 1.9-inch ST7789V TFT display (170×320), optional capacitive touch, 16MB flash, 8MB PSRAM, and USB-C. Popular for smart displays and IoT dashboards.

[Details](https://openhardware.directory/devices/lilygo-t-display-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t-display-s3/md)

## LILYGO T-Watch 2020 V3

Programmable ESP32 smartwatch with 1.54-inch touch IPS display, BMA423 accelerometer, PCF8563 RTC, PDM microphone, speaker, IR transmitter, and vibration motor — fully open-source and Arduino/MicroPython programmable.

[Details](https://openhardware.directory/devices/lilygo-t-watch-2020-v3) | [Markdown](https://openhardware.directory/devices/lilygo-t-watch-2020-v3/md)

## LILYGO T-Higrow

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.

[Details](https://openhardware.directory/devices/lilygo-t-higrow) | [Markdown](https://openhardware.directory/devices/lilygo-t-higrow/md)

## LILYGO T-QT Pro

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.

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

## LILYGO T-Display S3 AMOLED

ESP32-S3 board with 1.91-inch RM67162 AMOLED display (240×536), optional touch, 16MB flash, 8MB PSRAM, and USB-C — delivering vivid OLED visuals for IoT dashboards and smart displays.

[Details](https://openhardware.directory/devices/lilygo-t-display-s3-amoled) | [Markdown](https://openhardware.directory/devices/lilygo-t-display-s3-amoled/md)

## LILYGO T-Call SIM800

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.

[Details](https://openhardware.directory/devices/lilygo-t-call-sim800) | [Markdown](https://openhardware.directory/devices/lilygo-t-call-sim800/md)

## LILYGO T-Pico C3

Dual-MCU board combining RP2040 and ESP32-C3, with a 1.14-inch ST7789V display, WiFi, BLE 5.0, and Arduino/MicroPython support — bringing Raspberry Pi Pico connectivity to wireless IoT projects.

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

## LILYGO T-Echo

nRF52840 + SX1262 LoRa + L76K GPS all-in-one board with 1.54-inch e-paper display, 850mAh battery, Thread, Zigbee, and BLE 5.0 — runs Meshtastic, SoftRF, and custom NRF firmware out of the box.

[Details](https://openhardware.directory/devices/lilygo-t-echo) | [Markdown](https://openhardware.directory/devices/lilygo-t-echo/md)

## LILYGO T-Glass

Wearable ESP32-S3 development board with 1.1" full-color AMOLED display in a glasses prism form factor, microphone, RTC, and touch button for head-up display applications.

[Details](https://openhardware.directory/devices/lilygo-t-glass) | [Markdown](https://openhardware.directory/devices/lilygo-t-glass/md)

## LILYGO T-Display S3 Pro

Upgraded T-Display S3 with a larger 2.33" IPS touchscreen, ESP32-S3R8, OTG charging via SY6970, QWIIC ports, ambient light/proximity sensor, and optional camera module expansion via POGOpin.

[Details](https://openhardware.directory/devices/lilygo-t-display-s3-pro) | [Markdown](https://openhardware.directory/devices/lilygo-t-display-s3-pro/md)

## LILYGO T-TWR

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.

[Details](https://openhardware.directory/devices/lilygo-t-twr) | [Markdown](https://openhardware.directory/devices/lilygo-t-twr/md)

## LILYGO T-Beam Supreme

Upgraded T-Beam with ESP32-S3FN8, QMI8658 6-axis IMU, LoRa SX1262, dual GPS options (L76K or u-blox), SoftRF firmware support, and multi-frequency bands for Meshtastic and aircraft tracking.

[Details](https://openhardware.directory/devices/lilygo-t-beam-supreme) | [Markdown](https://openhardware.directory/devices/lilygo-t-beam-supreme/md)

## LILYGO T-Watch S3 Plus

ESP32-S3 smartwatch dev board with LoRa SX1262, GNSS, BMA423 accelerometer, MAX98357A audio, DRV2605 haptic feedback, AXP2101 PMIC, and 940mAh battery for wearable LoRa projects.

[Details](https://openhardware.directory/devices/lilygo-t-watch-s3-plus) | [Markdown](https://openhardware.directory/devices/lilygo-t-watch-s3-plus/md)

## LILYGO T-Embed CC1101

ESP32-S3 multi-protocol RF tool with CC1101 sub-GHz transceiver (300–928 MHz), 13.56 MHz RFID, IR transmit/receive, 1.9" IPS display, and rotary encoder for RF analysis and replay attacks.

[Details](https://openhardware.directory/devices/lilygo-t-embed-cc1101) | [Markdown](https://openhardware.directory/devices/lilygo-t-embed-cc1101/md)

## LILYGO T7 S3

Ultra-affordable ESP32-S3 development board with 16MB flash, 8MB PSRAM, USB 3.0, QWIIC/Stemma QT connector, power switch, and breadboard-compatible pinout at under $8.

[Details](https://openhardware.directory/devices/lilygo-t7-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t7-s3/md)

## LILYGO T-QT C6

Tiny ESP32-C6 dev board with WiFi 6, BLE 5, Zigbee/Thread (802.15.4), 0.85" 128×128 touchscreen, LiPo battery charging, and breathing LED in a thumbnail-sized form factor.

[Details](https://openhardware.directory/devices/lilygo-t-qt-c6) | [Markdown](https://openhardware.directory/devices/lilygo-t-qt-c6/md)

## LILYGO T-Circle S3

Compact ESP32-S3 board with a 0.75" round 160×160 TFT LCD (GC9D01N), 16MB flash, 8MB PSRAM, WiFi, and BLE 5 for wearable watchface and circular display applications.

[Details](https://openhardware.directory/devices/lilygo-t-circle-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t-circle-s3/md)

## LILYGO T-Relay S3

ESP32-S3 board with 6 onboard relays, 16MB flash, 8MB PSRAM, WiFi, and BLE for ESPHome smart home automation, controlling lights, appliances, and HVAC systems.

[Details](https://openhardware.directory/devices/lilygo-t-relay-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t-relay-s3/md)

## LILYGO T-Energy S3

Affordable ESP32-S3 development board with 16MB flash, 8MB PSRAM, integrated 18650 battery holder, WiFi, and BLE 5.0 for battery-powered IoT sensor nodes under $10.

[Details](https://openhardware.directory/devices/lilygo-t-energy-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t-energy-s3/md)

## LILYGO T-Knob

Smart rotary encoder controller based on ESP32-C6 with WiFi 6, BLE 5, Zigbee/Thread, 4 RGB LEDs, buzzer, and magnetic Hall-effect knob for wireless volume control and smart home automation.

[Details](https://openhardware.directory/devices/lilygo-t-knob) | [Markdown](https://openhardware.directory/devices/lilygo-t-knob/md)

## LILYGO T-Panel S3

Dual-MCU smart panel (ESP32-S3 + ESP32-H2) with 4" 480×480 IPS LCD (ST7701S), WiFi, BLE, native Zigbee/Thread/Matter via H2 co-processor, and optional RS485/CAN FD expansion for wall-mounted smart home controllers.

[Details](https://openhardware.directory/devices/lilygo-t-panel-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t-panel-s3/md)

## LILYGO T3 S3

ESP32-S3 LoRa development board with 0.96" OLED display, multiple LoRa module options (SX1262/SX1276/SX1280/LR1121), WiFi, BLE, and 18650 battery support for Meshtastic and IoT applications.

[Details](https://openhardware.directory/devices/lilygo-t3-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t3-s3/md)

## LILYGO T-SIM7080G S3

ESP32-S3 development board with SIM7080G NB-IoT/LTE-M/GNSS module, 16MB flash, 8MB PSRAM, 18650 battery support, and USB-C connectivity for low-power IoT applications.

[Details](https://openhardware.directory/devices/lilygo-t-sim7080g-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t-sim7080g-s3/md)

## LILYGO T-Embed SI4732

ESP32-S3 board with SI4732-A10 AM/FM/SW/LW radio receiver, 1.9" IPS display, 900mAh battery, and rotary encoder for a portable software-defined radio experience.

[Details](https://openhardware.directory/devices/lilygo-t-embed-si4732) | [Markdown](https://openhardware.directory/devices/lilygo-t-embed-si4732/md)

## LILYGO T7-C6

Compact ESP32-C6 development board with WiFi 6, BLE 5, and IEEE 802.15.4 (Zigbee/Thread/Matter) support, featuring 4MB flash and USB-C for next-generation IoT protocols.

[Details](https://openhardware.directory/devices/lilygo-t7-c6) | [Markdown](https://openhardware.directory/devices/lilygo-t7-c6/md)

## LILYGO T5 V2.3.1

LILYGO T5 V2.3.1 is a 2.13-inch e-paper display module with SSD1680 driver, supporting 212×104 black-and-white output via SPI. Ultra-low power design retains the image without any power supply.

[Details](https://openhardware.directory/devices/lilygo-t5-v2-3-1) | [Markdown](https://openhardware.directory/devices/lilygo-t5-v2-3-1/md)

## LILYGO T-Radar

LILYGO T-Radar is a radar sensor expansion module based on the Acconeer A121 pulsed coherent radar, designed for presence detection and distance measurement with LILYGO motherboards.

[Details](https://openhardware.directory/devices/lilygo-t-radar) | [Markdown](https://openhardware.directory/devices/lilygo-t-radar/md)

## LILYGO T-Keyboard

Compact ESP32-C3 keyboard terminal with a built-in 0.99" display, Wi-Fi, Bluetooth 4.2, 400mAh battery, and a 3D-printed shell for portable wireless input applications.

[Details](https://openhardware.directory/devices/lilygo-t-keyboard) | [Markdown](https://openhardware.directory/devices/lilygo-t-keyboard/md)

## LILYGO T-Wrist E-Paper

LILYGO T-Wrist E-Paper is an ESP32-based wearable development board with a 1.54-inch 200×200 e-paper display, vibration motor, optional GPS (LG77 GNSS), WiFi, Bluetooth 4.2, and 3D-printable watch shell.

[Details](https://openhardware.directory/devices/lilygo-t-wrist-e-paper) | [Markdown](https://openhardware.directory/devices/lilygo-t-wrist-e-paper/md)

## LILYGO T-Lora C6

LILYGO T-Lora C6 is a compact LoRa development board combining the ESP32-C6 module with SX1262 radio, supporting Wi-Fi 6, Bluetooth 5 LE, Zigbee, Thread, and sub-GHz LoRa communication.

[Details](https://openhardware.directory/devices/lilygo-t-lora-c6) | [Markdown](https://openhardware.directory/devices/lilygo-t-lora-c6/md)

## LILYGO T-Echo Lite

Simplified T-Echo with nRF52840, SX1262 LoRa, and optional L76K GPS — a low-cost, low-power LoRa node and Meshtastic-compatible board for off-grid mesh networking.

[Details](https://openhardware.directory/devices/lilygo-t-echo-lite) | [Markdown](https://openhardware.directory/devices/lilygo-t-echo-lite/md)

## LILYGO T-Encoder Pro

ESP32-S3 smart rotary encoder knob with 1.2-inch round AMOLED display, capacitive touch, buzzer, vibration motor, and dual Qwiic connectors — ideal for smart home control and media interfaces.

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

## 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.

[Details](https://openhardware.directory/devices/lilygo-t-connect) | [Markdown](https://openhardware.directory/devices/lilygo-t-connect/md)

## LILYGO T-Lora Dual

LILYGO T-Lora Dual is a compact board featuring dual LR1121 multi-band LoRa radios supporting both sub-GHz and 2.4 GHz bands, with ExpressLRS support for long-range RC and telemetry applications.

[Details](https://openhardware.directory/devices/lilygo-t-lora-dual) | [Markdown](https://openhardware.directory/devices/lilygo-t-lora-dual/md)

## LILYGO T-MixRF

LILYGO T-MixRF is a multi-protocol RF development board combining SX1262 LoRa sub-GHz radio with CC1101 FSK/OOK transceiver for versatile wireless protocol support and RF experimentation.

[Details](https://openhardware.directory/devices/lilygo-t-mixrf) | [Markdown](https://openhardware.directory/devices/lilygo-t-mixrf/md)

## LILYGO T7 V1.3 Mini32 ESP32

Compact ESP32 development board (Mini32 form factor) with 4MB Flash, WiFi 802.11 b/g/n, Bluetooth 4.2, CH340C USB-to-serial, TP4054 LiPo charger, and 1.25mm JST battery connector — a classic breadboard-compatible IoT dev board.

[Details](https://openhardware.directory/devices/lilygo-t7-v1-3-mini-32-esp32) | [Markdown](https://openhardware.directory/devices/lilygo-t7-v1-3-mini-32-esp32/md)

## LILYGO T-Connect Pro

ESP32-S3 three-board stack with SX1262 LoRa, CAN, RS485, RS232, Ethernet (W5500), relay, capacitive touch LCD, and DC input — a versatile industrial IoT gateway with long-range wireless.

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

## LILYGO T-Track

ESP32-S3R8 development board with a 1.1-inch JD9613 AMOLED display (126×294), onboard trackball, 16MB flash, 8MB PSRAM, WiFi, and BLE 5 — a compact touchless navigation dev kit for creative UI and interactive IoT applications.

[Details](https://openhardware.directory/devices/lilygo-t-track) | [Markdown](https://openhardware.directory/devices/lilygo-t-track/md)

## LILYGO T7 Mini32 V1.5

Updated ESP32 Mini32 development board with 8MB PSRAM, 4/16MB Flash options, dual-core 240MHz, CH9102 USB-serial, WiFi, BLE 4.2, and 1.25mm JST LiPo connector in a 40×31mm breadboard-friendly footprint.

[Details](https://openhardware.directory/devices/lilygo-t7-mini32-v1-5) | [Markdown](https://openhardware.directory/devices/lilygo-t7-mini32-v1-5/md)

## LILYGO T-2CAN

LILYGO T-2CAN is an ESP32-S3 development board featuring dual CAN bus interfaces via two TWAI controllers, Wi-Fi, Bluetooth 5 LE, and wide DC input range for automotive and industrial applications.

[Details](https://openhardware.directory/devices/lilygo-t-2can) | [Markdown](https://openhardware.directory/devices/lilygo-t-2can/md)

## LILYGO T4

LILYGO T4 is an ESP32 development board with 8MB PSRAM, optional 2.2 or 2.4-inch ILI9341 TFT LCD display, Wi-Fi, Bluetooth 4.2 BLE, and Li-Po battery support.

[Details](https://openhardware.directory/devices/lilygo-t4) | [Markdown](https://openhardware.directory/devices/lilygo-t4/md)

## LILYGO T-BHI260AP

Compact breakout board for the Bosch BHI260AP AI-powered IMU, featuring a 6-axis accelerometer and gyroscope with an onboard programmable AI neural network co-processor for motion pattern recognition and gesture detection.

[Details](https://openhardware.directory/devices/lilygo-t-bhi260ap) | [Markdown](https://openhardware.directory/devices/lilygo-t-bhi260ap/md)

## LILYGO ESP32 OLED V3.0

ESP32 development board with integrated 0.96-inch SSD1306 OLED display, 4MB Flash, 520KB SRAM, WiFi, Bluetooth dual-mode, USB-C, and onboard LiPo battery charging for compact IoT display projects.

[Details](https://openhardware.directory/devices/lilygo-esp32-oled-v3-0) | [Markdown](https://openhardware.directory/devices/lilygo-esp32-oled-v3-0/md)

## LILYGO T-Vending

ESP32-S3-WROOM-1 development board with MAX13487E RS-485 transceiver, T-PCIE SIM expansion slot, Grove connector, WiFi, and BLE — designed for vending machine control and industrial RS-485 communication applications.

[Details](https://openhardware.directory/devices/lilygo-t-vending) | [Markdown](https://openhardware.directory/devices/lilygo-t-vending/md)

## LILYGO T-ICM-20948

Breakout module for the InvenSense ICM-20948 9-axis MEMS IMU, combining a 3-axis gyroscope, 3-axis accelerometer, and 3-axis magnetometer with an onboard Digital Motion Processor for real-time motion tracking.

[Details](https://openhardware.directory/devices/lilygo-t-icm-20948) | [Markdown](https://openhardware.directory/devices/lilygo-t-icm-20948/md)

## 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)

## LILYGO T-PoE Pro

ESP32-WROVER-E development board with LAN8720 Ethernet, IEEE 802.3 af/at Power over Ethernet (5V@4A, 44–57V input), 16MB flash, 8MB PSRAM, WiFi, BLE 4.2, and expandable LCD interface for wired IoT gateway applications.

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

## LILYGO Helium T-Beam

ESP32 + SX1276 LoRa T-Beam variant optimized for the Helium IoT network — with NEO-6M GPS, AXP2101 PMU, and 18650 battery support for portable LoRaWAN network mapping and sensor nodes.

[Details](https://openhardware.directory/devices/lilygo-helium-t-beam) | [Markdown](https://openhardware.directory/devices/lilygo-helium-t-beam/md)

## LILYGO ESP32-S2

Pure ESP32-S2 development board with 4MB Flash, 8MB SRAM, native USB, WiFi 802.11 b/g/n, onboard LiPo charging, and multiple control buttons — a single-core Xtensa LX7 board for USB-HID and IoT applications.

[Details](https://openhardware.directory/devices/lilygo-esp32-s2) | [Markdown](https://openhardware.directory/devices/lilygo-esp32-s2/md)

## LILYGO T-Beam BPF

LILYGO T-Beam BPF is an ESP32-S3 LoRa development board variant featuring an onboard Band Pass Filter for improved RF selectivity, designed for the 144–148 MHz amateur radio band with GPS and OLED display.

[Details](https://openhardware.directory/devices/lilygo-t-beam-bpf) | [Markdown](https://openhardware.directory/devices/lilygo-t-beam-bpf/md)

## LILYGO ESP32-S2 WOOR

Compact ESP32-S2-WROOM module-based development board with 4MB Flash, 320KB SRAM, native USB OTG, WiFi 802.11 b/g/n, onboard LiPo charging, and BOOT/RESET buttons for USB HID and IoT prototyping.

[Details](https://openhardware.directory/devices/lilygo-esp32-s2-woor) | [Markdown](https://openhardware.directory/devices/lilygo-esp32-s2-woor/md)

## LILYGO Module17 Revision 0.1E

STM32-based M17 digital amateur radio modem board with DE-9 connector — implements the open-source M17 protocol for digital voice and data over amateur radio, compatible with OpenRTX firmware.

[Details](https://openhardware.directory/devices/lilygo-module17-rev-0-1e) | [Markdown](https://openhardware.directory/devices/lilygo-module17-rev-0-1e/md)

## LILYGO T-Beam 1W

LILYGO T-Beam 1W is an ESP32-S3 LoRa development board featuring a 1-watt LoRa power amplifier for significantly extended transmission range, with GPS support, AXP2101 PMU, and 18650 battery compatibility.

[Details](https://openhardware.directory/devices/lilygo-t-beam-1w) | [Markdown](https://openhardware.directory/devices/lilygo-t-beam-1w/md)

## LILYGO T-HaLow P4

ESP32-P4 high-performance board with ESP32-C6 WiFi HaLow (802.11ah), 16MB flash, 8MB PSRAM, H.264 1080P video processing, MIPI-CSI/DSI, and BLE 5 — designed for long-range sub-GHz WiFi IoT applications.

[Details](https://openhardware.directory/devices/lilygo-t-halow-p4) | [Markdown](https://openhardware.directory/devices/lilygo-t-halow-p4/md)

## LILYGO T3-S3 MVSR

ESP32-S3 LoRa voice kit with MAX98357A speaker, MSM261S4030HOR microphone, vibration motor, RTC, 0.96-inch SSD1306 OLED, 4MB Flash, 2MB PSRAM, and SX1262/SX1276/SX1280 radio options — designed for LoRa voice communication and off-grid messaging.

[Details](https://openhardware.directory/devices/lilygo-t3-s3-mvsr) | [Markdown](https://openhardware.directory/devices/lilygo-t3-s3-mvsr/md)

## LILYGO T-Touch Bar

ESP32-S3 touch-sensitive bar display board with 8MB PSRAM, 16MB Flash, Wi-Fi, and Bluetooth 5, available in LED and AMOLED display variants for building custom HMI panels, smart home controls, and interactive displays.

[Details](https://openhardware.directory/devices/lilygo-t-touch-bar) | [Markdown](https://openhardware.directory/devices/lilygo-t-touch-bar/md)

## LILYGO T-Bat

Solar-capable power management module based on CN3065 for charging an 18650 Li-ion battery via Micro USB, solar panel input (5.3V+), or BAT input, with 5V/1A USB output for powering devices up to 1A current draw.

[Details](https://openhardware.directory/devices/lilygo-t-bat) | [Markdown](https://openhardware.directory/devices/lilygo-t-bat/md)

## LILYGO T-Zigbee ESP32-C3 TLSR8258

Dual-MCU Zigbee development board combining ESP32-C3 (WiFi/BLE) and Telink TLSR8258 (Zigbee/BLE Mesh) — both run simultaneously for bridging Zigbee sensor networks to WiFi/cloud platforms.

[Details](https://openhardware.directory/devices/lilygo-t-zigbee-esp32-c3-tlsr8258) | [Markdown](https://openhardware.directory/devices/lilygo-t-zigbee-esp32-c3-tlsr8258/md)

## LILYGO T-SIM7600

ESP32 development board with SIM7600 LTE Cat-4 modem (150Mbps DL), GPS, 18650 battery holder with solar charging interface, and dual USB-C ports for high-speed cellular IoT applications.

[Details](https://openhardware.directory/devices/lilygo-t-sim7600) | [Markdown](https://openhardware.directory/devices/lilygo-t-sim7600/md)

## LILYGO T-Call V1.4

ESP32 development board with SIM800L 2G GSM/GPRS cellular modem, Wi-Fi, Bluetooth 4.2, USB-C charging, and Li-Po battery connector for IoT devices requiring SMS and GPRS data connectivity.

[Details](https://openhardware.directory/devices/lilygo-t-call-v1-4) | [Markdown](https://openhardware.directory/devices/lilygo-t-call-v1-4/md)

## LILYGO T-RS S3

ESP32-S3 industrial communication board with isolated RS-232 and RS-485 modules (3000V isolation), 7–24V DC input via DB9 connector, Wi-Fi, and Bluetooth 5 LE for Modbus and industrial serial networking applications.

[Details](https://openhardware.directory/devices/lilygo-t-rs-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t-rs-s3/md)

## LILYGO T-Encoder ESP32

Compact ESP32-PICO-V3-02 board with rotary encoder, WS2812 RGB LED ring, Wi-Fi, BLE 4.2, 8MB flash, and 2MB PSRAM. Ideal for knob-based UI controllers and volume/parameter controls.

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

## LILYGO T-Bao

Dual-MCU development board combining ESP32 and KENDRYTE K210 RISC-V AI processor with OV2640 camera, 1.54" IPS touchscreen, I2S audio amplifier, motor driver, 6-axis IMU, and Wi-Fi for edge AI and robotics prototyping.

[Details](https://openhardware.directory/devices/lilygo-t-bao) | [Markdown](https://openhardware.directory/devices/lilygo-t-bao/md)

## LILYGO T5 4.7-inch E-Paper V2.3

ESP32-S3 e-paper development board with 4.7-inch 540×960 16-grayscale display (EDO47TC1), Wi-Fi, Bluetooth 5.0, PCF8563 RTC, 16MB flash, 8MB PSRAM, and optional capacitive touch overlay.

[Details](https://openhardware.directory/devices/lilygo-t5-4-7-e-paper-v2-3) | [Markdown](https://openhardware.directory/devices/lilygo-t5-4-7-e-paper-v2-3/md)

## LILYGO T-TV

ESP32 desktop gadget with a 1.54-inch transparent blue OLED display, IR receiver, touch control, Wi-Fi, and Bluetooth. Ships with factory firmware featuring a clock, games, and animations.

[Details](https://openhardware.directory/devices/lilygo-t-tv) | [Markdown](https://openhardware.directory/devices/lilygo-t-tv/md)

## LILYGO T-Embed CC1101 Plus

Enhanced ESP32-S3 handheld with CC1101 sub-GHz radio, nRF24L01 2.4GHz radio, 1.9" IPS LCD, IR transceiver, 16MB flash, 8MB SRAM. Upgraded version of T-Embed CC1101 with added 2.4GHz wireless module.

[Details](https://openhardware.directory/devices/lilygo-t-embed-cc1101-plus) | [Markdown](https://openhardware.directory/devices/lilygo-t-embed-cc1101-plus/md)

## M5Stack Atom Lite

Ultra-compact ESP32-PICO-D4 development board (24x24mm) with RGB LED, programmable button, IR transmitter, Grove port, and 6 GPIO pins. Supports Arduino, ESP-IDF, UIFlow, and MicroPython.

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

## M5StickC Plus 2

Compact ESP32-PICO-V3-02 wearable dev board with 1.14" TFT LCD (135x240), 6-axis IMU (MPU6886), IR transmitter, microphone, buzzer, 200mAh battery, Wi-Fi and Bluetooth in a 48x24x13.5mm form factor.

[Details](https://openhardware.directory/devices/m5stickc-plus-2) | [Markdown](https://openhardware.directory/devices/m5stickc-plus-2/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)

## M5Stack Dial

ESP32-S3 smart rotary knob with 1.28" round GC9A01 touch display (240x240), rotary encoder, RFID reader (WS1850S), RTC (BM8563), buzzer, and 2 Grove ports for IoT control interfaces.

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

## M5Stack Atom Echo

Ultra-compact ESP32-PICO smart speaker dev kit (24x24mm) with built-in microphone, speaker, RGB LED, button, and Grove port. Ideal for voice assistant and audio streaming projects.

[Details](https://openhardware.directory/devices/m5stack-atom-echo) | [Markdown](https://openhardware.directory/devices/m5stack-atom-echo/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 NanoC6

Ultra-compact ESP32-C6 dev board by M5Stack with WiFi 6, BLE 5.0, Zigbee 3.0, and Thread/Matter support. RISC-V single-core at 160MHz, USB-C, RGB LED, and button in a tiny form factor.

[Details](https://openhardware.directory/devices/m5stack-nanoc6) | [Markdown](https://openhardware.directory/devices/m5stack-nanoc6/md)

## M5Stack Atom Matrix

Ultra-compact ESP32-PICO dev board (24x24mm) with 5x5 RGB LED matrix, 6-axis IMU (MPU6886), IR LED, programmable button, and Grove port. Perfect for LED displays and motion sensing.

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

## DFRobot FireBeetle 2 ESP32-S3 AIoT Camera

ESP32-S3 development board with integrated OV2640 camera, 16MB flash, 8MB PSRAM, WiFi and BLE connectivity. Designed for AIoT applications, computer vision, and edge AI projects.

[Details](https://openhardware.directory/devices/dfrobot-firebeetle-2-esp32-s3-aiot-camera) | [Markdown](https://openhardware.directory/devices/dfrobot-firebeetle-2-esp32-s3-aiot-camera/md)

## Heltec MeshSolar

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.

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

## WT32-SC01 Plus

ESP32-S3 development board with a 3.5" capacitive touch IPS LCD (480x320), 16MB flash, and 8MB PSRAM. Popular for building custom HMI/UI projects with LVGL, smart home panels, and IoT dashboards.

[Details](https://openhardware.directory/devices/wt32-sc01-plus) | [Markdown](https://openhardware.directory/devices/wt32-sc01-plus/md)

## Sonoff Zigbee 3.0 USB Dongle Plus E

EFR32MG21-based Zigbee 3.0 USB coordinator dongle for Home Assistant and Zigbee2MQTT. A popular, reliable choice for building smart home Zigbee networks.

[Details](https://openhardware.directory/devices/sonoff-zigbee-3-0-usb-dongle-plus-e) | [Markdown](https://openhardware.directory/devices/sonoff-zigbee-3-0-usb-dongle-plus-e/md)

## Heltec MeshTower

High-power Meshtastic relay/repeater kit with nRF52840 + SX1262 LoRa, 18V/10W solar panel, 3x2800mAh battery pack, IP66 aluminum enclosure, and 5.5dBi fiberglass antenna.

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

## M5Stack Atom Echo S3R

ESP32-S3 smart speaker dev kit with ES7210 audio codec, NS4168 amplifier, dual MEMS microphones, and RGB LED. Designed for Home Assistant voice assistant, ESPHome, and audio streaming projects.

[Details](https://openhardware.directory/devices/m5stack-atom-echo-s3r) | [Markdown](https://openhardware.directory/devices/m5stack-atom-echo-s3r/md)

## DezKVM Go

Open-source KVM-over-USB device for controlling headless computers from your laptop. Features HDMI capture up to 1080p 25fps, virtual keyboard/mouse via USB HID, and a browser-based interface requiring no drivers.

[Details](https://openhardware.directory/devices/dezkvm-go) | [Markdown](https://openhardware.directory/devices/dezkvm-go/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)

## Sonoff BasicR2

WiFi smart switch based on ESP8285, widely used in the open-source home automation community. Easily flashable with Tasmota or ESPHome for local-only smart home control without cloud dependency.

[Details](https://openhardware.directory/devices/sonoff-basicr2) | [Markdown](https://openhardware.directory/devices/sonoff-basicr2/md)

## Denky D4

Open-source ESP32 Teleinfo reader board for French Linky energy meters. Pre-flashed with Tasmota, features USB-C, WiFi, QWIIC I2C port, and RGB LED. Reads both Standard and Historique TIC formats.

[Details](https://openhardware.directory/devices/denky-d4) | [Markdown](https://openhardware.directory/devices/denky-d4/md)

## TimeHAT I226 NIC with PPS In/Out for RPi5

Open-source Raspberry Pi 5 PCIe HAT with Intel I226 2.5G Ethernet NIC, dual SMA connectors for 1PPS input/output, built-in TCXO, and M.2 slot for GNSS modules. Ideal for PTP grandmaster clocks.

[Details](https://openhardware.directory/devices/timehat-i226) | [Markdown](https://openhardware.directory/devices/timehat-i226/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)

## Louder Raspberry HAT Plus

Open-source Raspberry Pi audio HAT featuring TAS5825M Class-D amplifier with integrated DSP, delivering 32W per channel at 8 ohms. Includes 15-band parametric EQ, FIR filtering, DRC, IR input, and onboard step-down converter to power the Pi from 7-26V.

[Details](https://openhardware.directory/devices/louder-raspberry-hat-plus) | [Markdown](https://openhardware.directory/devices/louder-raspberry-hat-plus/md)

## OpenEPaperLink Access Point C6+S3

Open-source dual-MCU access point for wirelessly managing e-paper tags. ESP32-C6 handles WiFi connectivity while ESP32-S3 serves as a 2.4GHz RF transceiver for IEEE 802.15.4 communication with electronic shelf labels.

[Details](https://openhardware.directory/devices/openepaperlink-access-point-c6-s3) | [Markdown](https://openhardware.directory/devices/openepaperlink-access-point-c6-s3/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)

## Open AIR Mini

Open-source ESP32-based ventilation controller for Ducobox Silent/Focus and Orcon MVS-15xx systems with optional CO2, humidity, VOC, and NOx sensors, fully compatible with ESPHome and Home Assistant.

[Details](https://openhardware.directory/devices/open-air-mini) | [Markdown](https://openhardware.directory/devices/open-air-mini/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)

## BlueMicro PyKey60

Open-source 60% mechanical keyboard PCB with RP2040 MCU, per-key RGB NeoPixel LEDs, Kailh hot-swap sockets, onboard buzzer, and USB-C. Runs KMK and CircuitPython firmware.

[Details](https://openhardware.directory/devices/pykey60) | [Markdown](https://openhardware.directory/devices/pykey60/md)

## Waveshare RoArm-M1

ESP32-based 5-DOF desktop robotic arm with high-torque serial bus servos, WiFi/Bluetooth control, motion recording, inverse kinematics, and ROS 2 support. Carbon fiber and aluminum construction.

[Details](https://openhardware.directory/devices/waveshare-roarm-m1) | [Markdown](https://openhardware.directory/devices/waveshare-roarm-m1/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)

## Waveshare RoArm-M2-S

ESP32-based 4-DOF robotic arm with 360-degree base rotation, 500g payload at 300mm reach, dual-drive shoulder joint, 9-axis IMU, and ROS 2 + LeRobot compatibility. Under 850g total weight.

[Details](https://openhardware.directory/devices/waveshare-roarm-m2-s) | [Markdown](https://openhardware.directory/devices/waveshare-roarm-m2-s/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)

## 0.91" OLED I2C Display (128x32)

Compact 0.91-inch monochrome OLED display module with 128x32 pixel resolution and SSD1306 driver. Communicates over I2C interface, ideal for small status readouts and embedded projects.

[Details](https://openhardware.directory/devices/oled-091-inch-i2c-display) | [Markdown](https://openhardware.directory/devices/oled-091-inch-i2c-display/md)

## 0.96" OLED SSD1306 Display (128x64)

Popular 0.96-inch monochrome OLED display with 128x64 pixel resolution and SSD1306 driver IC. I2C interface with wide library support, the go-to display for Arduino and ESP32 projects.

[Details](https://openhardware.directory/devices/oled-096-inch-ssd1306-display) | [Markdown](https://openhardware.directory/devices/oled-096-inch-ssd1306-display/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)

## A4988 Stepper Motor Driver Module

Allegro A4988-based stepper motor driver module with microstepping up to 1/16 step, handling up to 2A per coil. Includes heatsink. Essential for 3D printers, CNC machines, and precision robotics.

[Details](https://openhardware.directory/devices/a4988-stepper-motor-driver) | [Markdown](https://openhardware.directory/devices/a4988-stepper-motor-driver/md)

## 1.3" OLED I2C Display (128x64)

Larger 1.3-inch monochrome OLED display with 128x64 pixel resolution and SH1106 driver IC. I2C interface with improved readability over smaller 0.96" modules, great for dashboards and readouts.

[Details](https://openhardware.directory/devices/oled-13-inch-i2c-display) | [Markdown](https://openhardware.directory/devices/oled-13-inch-i2c-display/md)

## TP4056 Charge Controller Module

Li-Ion/LiPo battery charging module based on the TP4056 IC with built-in battery protection circuit. Mini USB 5V input, 1A charging current. Essential for portable and battery-powered IoT projects.

[Details](https://openhardware.directory/devices/tp4056-charge-controller) | [Markdown](https://openhardware.directory/devices/tp4056-charge-controller/md)

## 1.77" SPI TFT Display (128x160)

Color 1.77-inch TFT LCD display module with 128x160 pixel resolution and ST7735 driver. SPI interface for fast refresh rates, capable of displaying full-color graphics, images, and UI elements.

[Details](https://openhardware.directory/devices/tft-177-inch-spi-display) | [Markdown](https://openhardware.directory/devices/tft-177-inch-spi-display/md)

## SLAMTEC RPLiDAR A1

360-degree 2D laser scanner with 12m range and 8000 samples per second. Widely used for ROS robotics, SLAM mapping, and autonomous navigation applications.

[Details](https://openhardware.directory/devices/slamtec-rplidar-a1) | [Markdown](https://openhardware.directory/devices/slamtec-rplidar-a1/md)

## DFRobot Solar Power Manager for 12V Lead-Acid Battery

DFRobot solar energy harvesting and battery management module with MPPT for 12V lead-acid batteries. Designed for outdoor IoT deployments, environmental monitoring stations, and off-grid solar-powered systems.

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

## DFRobot Maqueen Plus V3

Advanced micro:bit STEM robot with 8x8 matrix laser ranging, 5 line-tracking sensors with intersection recognition, magnetic encoders, PID control, and 6 RGB LEDs. Programmable via MakeCode and MicroPython.

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

## GY-521 MPU-6050 6-Axis IMU Module

6-axis inertial measurement unit combining a 3-axis accelerometer (±2/4/8/16g) and 3-axis gyroscope (±250-2000°/s) with onboard DMP. I2C interface, 3.3V/5V.

[Details](https://openhardware.directory/devices/gy-521-mpu-6050) | [Markdown](https://openhardware.directory/devices/gy-521-mpu-6050/md)

## HuskyLens AI Camera

AI-powered vision sensor with built-in Kendryte K210 processor. Supports face recognition, object tracking, object recognition, line following, color recognition, and tag recognition via I2C or UART.

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

## ACEBOTT QD001 Smart Robot Car

ESP32-powered 4WD mecanum wheel robot car kit with ultrasonic, IR, and line-tracking sensors. Programmable via Arduino, ACECode, and Python. Expandable with camera, AI, tank, robot arm, and GPS packs.

[Details](https://openhardware.directory/devices/acebott-qd001-smart-robot-car) | [Markdown](https://openhardware.directory/devices/acebott-qd001-smart-robot-car/md)

## OV2640 Camera Module

2-megapixel camera module with SCCB/I2C interface, commonly used with ESP32-CAM and other microcontroller boards for image capture, video streaming, and computer vision projects.

[Details](https://openhardware.directory/devices/ov2640-camera-module) | [Markdown](https://openhardware.directory/devices/ov2640-camera-module/md)

## Sonoff ZBMini

Zigbee 3.0 two-way smart switch in a tiny form factor that fits behind existing wall switches. Supports external switch input and works with Home Assistant, SmartThings, and other Zigbee hubs.

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

## Home Assistant Connect ZWA-2

Z-Wave 700 series USB stick for Home Assistant, based on Silicon Labs EFR32ZG23. Plug-and-play Z-Wave coordinator with long range support, designed by Nabu Casa for seamless Home Assistant integration.

[Details](https://openhardware.directory/devices/home-assistant-connect-zwa-2) | [Markdown](https://openhardware.directory/devices/home-assistant-connect-zwa-2/md)

## Seeed XIAO 2-Channel WiFi AC Relay

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.

[Details](https://openhardware.directory/devices/seeed-xiao-2-channel-wifi-ac-relay) | [Markdown](https://openhardware.directory/devices/seeed-xiao-2-channel-wifi-ac-relay/md)

## Sonoff SNZB-01P

Zigbee 3.0 wireless button and scene switch with single, double, and long press actions. Battery-powered with CR2477 lasting up to 5 years. Works with Home Assistant, Zigbee2MQTT, and eWeLink.

[Details](https://openhardware.directory/devices/sonoff-snzb-01p) | [Markdown](https://openhardware.directory/devices/sonoff-snzb-01p/md)

## RFID RC522 Kit

NXP MFRC522-based 13.56MHz RFID reader/writer kit with SPI interface, including reader module, MIFARE 1K card, and key fob. Ideal for access control and identification projects.

[Details](https://openhardware.directory/devices/rfid-rc522-kit) | [Markdown](https://openhardware.directory/devices/rfid-rc522-kit/md)

## M5Stack Single Live Wire WiFi Smart Switch

ESP32-C6 based WiFi smart switch for single live wire AC power control. Supports WiFi 6 and Zigbee 3.0, fits standard wall boxes for home automation.

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

## ADS1115 16-Bit ADC Module

16-bit 4-channel analog-to-digital converter module with programmable gain amplifier (PGA, up to 16x). I2C interface, 860 SPS max. Ideal for precision analog measurements.

[Details](https://openhardware.directory/devices/ads1115-16bit-adc-module) | [Markdown](https://openhardware.directory/devices/ads1115-16bit-adc-module/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)

## M5Stack Air Quality Kit v1.1

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

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

## LoRa A39-T230A30D1a SX1262 Module

Long-range LoRa transceiver module with Semtech SX1262, UART interface, 1W output power, and up to 16km range at 210-241MHz. Ideal for remote telemetry and agricultural IoT.

[Details](https://openhardware.directory/devices/lora-a39-module) | [Markdown](https://openhardware.directory/devices/lora-a39-module/md)

## DFRobot Gravity Flexible RGB LED Matrix

Flexible addressable RGB LED matrix panel with I2C control and Gravity connector, available in 8x8, 8x32, and 16x16 configurations for visual displays and lighting projects.

[Details](https://openhardware.directory/devices/dfrobot-gravity-rgb-led-matrix) | [Markdown](https://openhardware.directory/devices/dfrobot-gravity-rgb-led-matrix/md)

## M5Stack ENV III Unit

I2C environmental sensor unit with SHT30 temperature/humidity and QMP6988 barometric pressure sensors. Grove connector, compatible with M5Stack ecosystem.

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

## FT232 USB to TTL Serial Adapter

FTDI FT232RL-based USB-to-TTL serial adapter with selectable 3.3V/5V logic, 6-pin header, and full modem signals. Essential tool for programming Arduino, ESP8266, and other MCUs.

[Details](https://openhardware.directory/devices/ft232-usb-to-ttl) | [Markdown](https://openhardware.directory/devices/ft232-usb-to-ttl/md)

## DFRobot Pan-Tilt HAT

2-axis servo-driven pan-tilt platform HAT for Raspberry Pi and NVIDIA Jetson Nano, ideal for camera tracking, FPV, and robotics head movement projects.

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

## nRF24L01 2.4GHz Wireless Module

Nordic nRF24L01+ 2.4GHz wireless transceiver module with SPI interface, 2Mbps data rate, 126 channels, and up to 100m range. Popular choice for Arduino and Raspberry Pi wireless sensor networks.

[Details](https://openhardware.directory/devices/nrf24l01-wireless-module) | [Markdown](https://openhardware.directory/devices/nrf24l01-wireless-module/md)

## 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.

[Details](https://openhardware.directory/devices/m5stack-gps-module-v21) | [Markdown](https://openhardware.directory/devices/m5stack-gps-module-v21/md)

## WS2812B RGB LED Ring (12-Bit, 50mm)

12-LED addressable WS2812B RGB ring in a 50mm form factor, running on 5V with single-wire data control — perfect for status indicators, wearables, and visual effects.

[Details](https://openhardware.directory/devices/ws2812b-rgb-led-ring) | [Markdown](https://openhardware.directory/devices/ws2812b-rgb-led-ring/md)

## Waveshare DDSM115 Direct Drive Servo Motor

All-in-one 115 RPM direct drive servo hub motor with RS485 control, 4096-position encoder, and IP54 rating — designed for robotics, AGVs, and precision motion applications.

[Details](https://openhardware.directory/devices/waveshare-ddsm115) | [Markdown](https://openhardware.directory/devices/waveshare-ddsm115/md)

## Waveshare DDSM315 Direct Drive Servo Motor

High-speed 315 RPM direct drive servo motor with RS485 bus, 12-bit encoder, and IP54 waterproof rating — ideal for RC cars, mobile robots, and DIY robotics platforms.

[Details](https://openhardware.directory/devices/waveshare-ddsm315) | [Markdown](https://openhardware.directory/devices/waveshare-ddsm315/md)

## Holybro M10 GPS

u-blox M10 GPS module with IST8310 compass for Pixhawk flight controllers. Supports GPS, GLONASS, Galileo, and BeiDou constellations with onboard safety switch, buzzer, and LED indicator.

[Details](https://openhardware.directory/devices/holybro-m10-gps) | [Markdown](https://openhardware.directory/devices/holybro-m10-gps/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)

## Brain BioAmp Band

A stretchable, wearable multi-channel EEG electrode band by Upside Down Labs for recording brain signals. Available in 2-channel and 6-channel variants, it connects to BioAmp EXG Pill for brain-computer interface projects.

[Details](https://openhardware.directory/devices/brain-bioamp-band) | [Markdown](https://openhardware.directory/devices/brain-bioamp-band/md)

## TinkerNav RTK GNSS Board

Open-source RTK GNSS board with SkyTraq PX1105R receiver and ESP32-S3 for centimeter-level positioning. Works as base station or rover with WiFi, Bluetooth LE, and optional LoRa connectivity.

[Details](https://openhardware.directory/devices/tinkernav-rtk-gnss-board) | [Markdown](https://openhardware.directory/devices/tinkernav-rtk-gnss-board/md)

## VoltLink CP2102N

Open source USB-to-serial adapter and ESP32 programmer featuring a genuine Silabs CP2102N chip, USB-C connector, auto-reset circuitry, 3.3V 500mA regulator, and ESD/overcurrent protection.

[Details](https://openhardware.directory/devices/voltlink-cp2102n) | [Markdown](https://openhardware.directory/devices/voltlink-cp2102n/md)

## UkieLab WiFi Weather Station 7.5"

A smart WiFi-enabled weather station with a 7.5\" e-ink display showing current conditions, humidity, pressure, and 4-day forecasts via Apple Weather. Available in USB-powered or battery-powered versions with optional CO2 sensor.

[Details](https://openhardware.directory/devices/ukielab-wifi-weather-station-75) | [Markdown](https://openhardware.directory/devices/ukielab-wifi-weather-station-75/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)

## ChameleonUltra

Open-source NFC/RFID multi-tool built on the nRF52840 SoC. Reads, writes, cracks, and emulates 13.56MHz and 125kHz cards in a compact key-fob form factor with BLE 5.0 connectivity.

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

## Makerfabs ESP32 UWB Pro with Display

ESP32-WROVER development board with Decawave DWM1000 UWB module for centimeter-accurate indoor positioning and ranging, featuring a 1.3\" OLED display and LiPo battery charging.

[Details](https://openhardware.directory/devices/makerfabs-esp32-uwb-pro-with-display) | [Markdown](https://openhardware.directory/devices/makerfabs-esp32-uwb-pro-with-display/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)

## 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)

## Louder ESP32

ESP32 audio development board with TAS5805M I2S Class-D amplifier delivering 2x23W stereo output, designed for multi-room audio, network streaming, and smart home integration.

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

## Gnat LoRa+GNSS Asset Tracker

Ultra-small (20x20mm), ultra-low-power LoRa/LoRaWAN + concurrent GNSS asset tracker by Tlera Corp, built on the Murata CMWX1ZZABZ-078 module with STM32L082 MCU, SX1276 LoRa radio, u-blox MAX-M8Q GNSS, and LIS2DW12 accelerometer.

[Details](https://openhardware.directory/devices/gnat-loragnss-asset-tracker) | [Markdown](https://openhardware.directory/devices/gnat-loragnss-asset-tracker/md)

## Airlytix ES1

ESPHome-native indoor air quality sensor with PM1.0/PM2.5/PM4/PM10, CO2, VOC, NOx, temperature, humidity, pressure, light, and sound monitoring. Designed for Home Assistant with full local control and open YAML configuration.

[Details](https://openhardware.directory/devices/airlytix-es1) | [Markdown](https://openhardware.directory/devices/airlytix-es1/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)

## Elecrow ThinkNode M1

Compact Meshtastic LoRa transceiver with nRF52840, SX1262, 1.54\" e-paper display, GPS, and 1200mAh battery for off-grid mesh communication.

[Details](https://openhardware.directory/devices/elecrow-thinknode-m1) | [Markdown](https://openhardware.directory/devices/elecrow-thinknode-m1/md)

## HeishaMon Communication PCB

Open-source ESP-based communication PCB for local monitoring and control of Panasonic Aquarea heat pumps via MQTT and HTTP, with Home Assistant integration and S0 energy metering support.

[Details](https://openhardware.directory/devices/heishamon-communication-pcb) | [Markdown](https://openhardware.directory/devices/heishamon-communication-pcb/md)

## Armachat FLIP

Pocket-sized open-source LoRa mesh messenger with ESP32-S3, RFM95 radio, 2.8" IPS display, and 36-key QWERTY keyboard. Runs Meshtastic and CircuitPython firmware for off-grid text communication.

[Details](https://openhardware.directory/devices/armachat-flip) | [Markdown](https://openhardware.directory/devices/armachat-flip/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)

## CircuitMess ClockStar 2.0

DIY smartwatch kit powered by ESP32 with ST7735S display, 6-axis IMU, Bluetooth connectivity, and programmable via CircuitBlocks visual coding environment.

[Details](https://openhardware.directory/devices/circuitmess-clockstar-2-0) | [Markdown](https://openhardware.directory/devices/circuitmess-clockstar-2-0/md)

## CircuitMess NASA Artemis Watch 2.0

NASA-themed programmable smartwatch powered by ESP32-S3 with BLE 5.0, 6-axis IMU, ST7735S display, and activity tracking. Pre-assembled and ready to code.

[Details](https://openhardware.directory/devices/circuitmess-nasa-artemis-watch-2-0) | [Markdown](https://openhardware.directory/devices/circuitmess-nasa-artemis-watch-2-0/md)

## CircuitMess Chatter 2.0

DIY encrypted LoRa communicator kit building a pair of devices for off-grid text messaging up to 2km range. Features ESP32, LLCC68 LoRa radio, and 160×128 TFT display.

[Details](https://openhardware.directory/devices/circuitmess-chatter-2-0) | [Markdown](https://openhardware.directory/devices/circuitmess-chatter-2-0/md)

## CircuitMess NASA Mars Perseverance Rover

NASA-themed DIY robotics kit with ESP32-S3, camera, dual DC motors, 3 servos, and WiFi/BLE. Build a programmable Mars Rover replica with robotic arm and live video feed.

[Details](https://openhardware.directory/devices/circuitmess-nasa-mars-perseverance-rover) | [Markdown](https://openhardware.directory/devices/circuitmess-nasa-mars-perseverance-rover/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)

## Shelly Plus 1

ESP32-C3 based WiFi/BLE smart relay module with 16A switching capacity, dry contact input, and compact DIN-rail or in-wall form factor. Flashable with Tasmota or ESPHome for local smart home control.

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

## Sonoff NSPanel

ESP32-based smart wall switch with 3.5-inch capacitive touchscreen, dual relay outputs, temperature sensor, and buzzer. Flashable with Tasmota for custom LVGL/Berry interfaces and Home Assistant integration.

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

## Sonoff MINIR4 Extreme

Ultra-compact ESP32-C3 WiFi smart switch module with 10A relay, detached switch mode, and the smallest form factor in its class. Fits any wall box. Flashable with Tasmota for local control.

[Details](https://openhardware.directory/devices/sonoff-minir4-extreme) | [Markdown](https://openhardware.directory/devices/sonoff-minir4-extreme/md)

## Shelly Plus 2PM

ESP32-based dual-relay WiFi/BLE smart switch with per-channel power monitoring via ADE7953, cover/shutter control mode, and 10A per channel. Flashable with Tasmota for local roller blind and dual light control.

[Details](https://openhardware.directory/devices/shelly-plus-2pm) | [Markdown](https://openhardware.directory/devices/shelly-plus-2pm/md)

## Sonoff POW Elite 16A

ESP32-based WiFi smart switch with high-accuracy power monitoring via CSE7766, 16A relay, LCD display, and DIN-rail mounting. Flashable with Tasmota for local energy tracking and home automation.

[Details](https://openhardware.directory/devices/sonoff-pow-elite-16a) | [Markdown](https://openhardware.directory/devices/sonoff-pow-elite-16a/md)

## Sonoff Dual R3

ESP32-based dual-relay WiFi smart switch with per-channel power monitoring, roller shutter mode, and 2×10A outputs. Ideal for motorized blinds with Tasmota shutter calibration and position tracking.

[Details](https://openhardware.directory/devices/sonoff-dual-r3) | [Markdown](https://openhardware.directory/devices/sonoff-dual-r3/md)

## Sonoff Zigbee Bridge Pro

ESP32-based Zigbee-to-WiFi gateway with CC2652P coordinator chip supporting 128 Zigbee devices. Flashable with Tasmota for local Zigbee bridge operation with Home Assistant via MQTT.

[Details](https://openhardware.directory/devices/sonoff-zigbee-bridge-pro) | [Markdown](https://openhardware.directory/devices/sonoff-zigbee-bridge-pro/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 EDGE201 DMX512 ESP32-S3 Lighting Controller

ESP32-S3-based DMX512 lighting programming controller with dual-core architecture, 8 optically isolated inputs, RS485, relay output, WiFi/Bluetooth, and DIN-rail mounting in an alloy steel enclosure. Designed for stage, theater, and venue lighting automation.

[Details](https://openhardware.directory/devices/dfrobot-edge201-dmx512-esp32-s3-controller) | [Markdown](https://openhardware.directory/devices/dfrobot-edge201-dmx512-esp32-s3-controller/md)

## DFRobot FireBeetle 2 M0

Compact, low-power ARM Cortex-M0+ development board with ATSAMD21G18 MCU, 16MB SPI flash, USB-C, WS2812 RGB LED, and FPC display connector, ideal for IoT and low-power applications.

[Details](https://openhardware.directory/devices/dfrobot-firebeetle-2-m0) | [Markdown](https://openhardware.directory/devices/dfrobot-firebeetle-2-m0/md)

## DFRobot Beetle ESP32-C3

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.

[Details](https://openhardware.directory/devices/dfrobot-beetle-esp32-c3) | [Markdown](https://openhardware.directory/devices/dfrobot-beetle-esp32-c3/md)

## LattePanda 3 Delta

Pocket-sized x86 single board computer with Intel Celeron N5105 quad-core, 8GB LPDDR4 RAM, 64GB eMMC, Wi-Fi 6, 2.5GbE, triple display output, and an integrated Arduino Leonardo co-processor.

[Details](https://openhardware.directory/devices/lattepanda-3-delta) | [Markdown](https://openhardware.directory/devices/lattepanda-3-delta/md)

## Pine64 PineTime

Open-source smartwatch built on the Nordic nRF52832 SoC with 1.3-inch IPS touchscreen, heart rate sensor, accelerometer, and week-long battery life. Runs InfiniTime, Wasp-OS, or Zephyr firmware. Priced from $27.

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

## DFRobot FireBeetle 2 ESP32-C5 Development Kit

ESP32-C5 RISC-V development kit with dual-band WiFi 6 (2.4/5GHz), BLE 5, Zigbee 3.0, Thread 1.3, and Matter support. Features solar charging, 21uA deep sleep, IO expansion board, and 18 digital I/O pins at just $8.90.

[Details](https://openhardware.directory/devices/dfrobot-firebeetle-2-esp32-c5) | [Markdown](https://openhardware.directory/devices/dfrobot-firebeetle-2-esp32-c5/md)

## 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.

[Details](https://openhardware.directory/devices/makerdiary-nrf52840-mdk-usb-dongle) | [Markdown](https://openhardware.directory/devices/makerdiary-nrf52840-mdk-usb-dongle/md)

## nice!nano v2 Wireless Keyboard Controller

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 split keyboards at $25.

[Details](https://openhardware.directory/devices/nice-nano-v2-wireless-keyboard-controller) | [Markdown](https://openhardware.directory/devices/nice-nano-v2-wireless-keyboard-controller/md)

## DFRobot Beetle ESP32

Compact ESP32 dual-core development board with WiFi, Bluetooth 4.2, sewable I/O pads, and wearable-friendly 35x34mm form factor for IoT and e-textile projects.

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

## BeagleConnect Freedom

Open-source wireless IoT board with TI CC1352P7 dual-band radio (sub-GHz + 2.4 GHz), BLE 5.0, two mikroBUS sockets for 1,000+ Click boards, and Zephyr RTOS. Designed for long-range wireless sensor networks up to 1 km.

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

## DFRobot FireBeetle 2 ESP32-E

Compact ESP32-E IoT microcontroller with WiFi 802.11 b/g/n, Bluetooth 4.2, 18 digital I/O, 11 analog inputs, 7 touch pins, 2 DACs, onboard WS2812 RGB LED, GDI display interface, and lithium battery charging in a tiny 25.4x60mm form factor.

[Details](https://openhardware.directory/devices/dfrobot-firebeetle-2-esp32-e) | [Markdown](https://openhardware.directory/devices/dfrobot-firebeetle-2-esp32-e/md)

## 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.

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

## LattePanda Mu N100

Card-sized x86 compute module with Intel N100 quad-core (up to 3.4GHz), 8GB LPDDR5, 64GB eMMC, 9 PCIe 3.0 lanes, triple display output, and open-source KiCAD carrier board design for custom embedded systems.

[Details](https://openhardware.directory/devices/lattepanda-mu-n100) | [Markdown](https://openhardware.directory/devices/lattepanda-mu-n100/md)

## DFRobot Beetle RP2350

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.

[Details](https://openhardware.directory/devices/dfrobot-beetle-rp2350) | [Markdown](https://openhardware.directory/devices/dfrobot-beetle-rp2350/md)

## LattePanda Mu N305

Card-sized x86 compute module with Intel Core i3-N305 8-core (up to 3.8GHz), 16GB LPDDR5, 64GB eMMC, 9 PCIe 3.0 lanes, triple display output, and open-source KiCAD carrier board design.

[Details](https://openhardware.directory/devices/lattepanda-mu-n305) | [Markdown](https://openhardware.directory/devices/lattepanda-mu-n305/md)

## Waveshare RP2350B-Plus-W

Compact Pico-form-factor development board featuring the Raspberry Pi RP2350B dual-architecture MCU with WiFi and Bluetooth 5.2 via the Raspberry Pi Radio Module 2, 16MB flash, 26 GPIO pins, and USB-C connectivity.

[Details](https://openhardware.directory/devices/waveshare-rp2350b-plus-w) | [Markdown](https://openhardware.directory/devices/waveshare-rp2350b-plus-w/md)

## Ai-Thinker Ra-09-DTU

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.

[Details](https://openhardware.directory/devices/ai-thinker-ra-09-dtu) | [Markdown](https://openhardware.directory/devices/ai-thinker-ra-09-dtu/md)

## DFRobot FireBeetle 2 ESP32-S3 (N4)

ESP32-S3 dual-core IoT microcontroller with AI acceleration, WiFi 802.11 b/g/n, BLE 5.0, 26 GPIO pins, 20 ADC channels, USB 2.0 OTG, GDI display interface, lithium battery charging, and stamp-hole PCB design in a 25.4x60mm form factor.

[Details](https://openhardware.directory/devices/dfrobot-firebeetle-2-esp32-s3-n4) | [Markdown](https://openhardware.directory/devices/dfrobot-firebeetle-2-esp32-s3-n4/md)

## Waveshare RP2350-One

Ultra-compact USB-A plug-and-play development board with the Raspberry Pi RP2350A dual-architecture MCU, 4MB flash, WS2812 RGB LED, castellated module design, and 29 GPIO pins in a tiny 18 x 25.5mm form factor.

[Details](https://openhardware.directory/devices/waveshare-rp2350-one) | [Markdown](https://openhardware.directory/devices/waveshare-rp2350-one/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)

## 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 W5500 Ethernet PoE Board

Arduino Leonardo-compatible IoT board with WIZnet W5500 hardwired TCP/IP Ethernet (10/100Mbps), 802.3af PoE power input, ATmega32u4 MCU, 20 digital I/O pins, and 6 analog inputs for wired IoT applications.

[Details](https://openhardware.directory/devices/dfrobot-w5500-ethernet-poe) | [Markdown](https://openhardware.directory/devices/dfrobot-w5500-ethernet-poe/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)

## DFRobot Xboard Relay

Ethernet-controlled dual-relay board with ATmega32u4, WIZnet W5100 Ethernet, XBee socket, and two 10A relays for remote switching of AC/DC loads via web or MQTT, ideal for home automation.

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

## DFRobot FireBeetle ESP32

Compact ESP32 IoT microcontroller with dual-core Xtensa LX6 at 240MHz, WiFi 802.11 b/g/n, Bluetooth 4.2, 16MB flash, 520KB SRAM, 10 digital I/O, 5 analog inputs, onboard LiPo charging, 10uA deep sleep, and 250+ tutorials.

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

## DFRobot FireBeetle ESP8266

Compact ESP8266 WiFi IoT microcontroller with Tensilica L106 at 80/160MHz, 16MB flash, 50KB SRAM, 10 digital I/O, onboard LiPo charging, 46uA low-power mode, OTA updates, and Arduino/MicroPython support at just $7.50.

[Details](https://openhardware.directory/devices/dfrobot-firebeetle-esp8266) | [Markdown](https://openhardware.directory/devices/dfrobot-firebeetle-esp8266/md)

## LuckFox Pico 86 Panel

Standard 86-type wall-mount smart panel with 4-inch 720x720 IPS capacitive touch display, Rockchip RV1106 SoC, 2-channel relay with optocoupler isolation, RS485, 100M Ethernet, onboard speaker and microphone, wide 6-30V DC input. Designed for smart home control and HMI applications.

[Details](https://openhardware.directory/devices/waveshare-luckfox-pico-86-panel) | [Markdown](https://openhardware.directory/devices/waveshare-luckfox-pico-86-panel/md)

## Waveshare RP2040-LoRa

A compact RP2040-based LoRa module with SX1262 transceiver, available in 410-525MHz (LF) and 850-930MHz (HF) variants, featuring 2MB flash, 20 GPIO pins, IPEX antenna connector, and castellated edge design for embedded integration.

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

## Waveshare ESP32-S3-LR1121

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.

[Details](https://openhardware.directory/devices/waveshare-esp32-s3-lr1121) | [Markdown](https://openhardware.directory/devices/waveshare-esp32-s3-lr1121/md)

## LuckFox Core3506

Tiny 32x32mm Rockchip RK3506B core module with tri-core ARM Cortex-A7 + Cortex-M0, 512MB DDR3L, optional 8GB eMMC, dual 100M Ethernet RMII, MIPI DSI 2-lane, 4-ch ADC, CAN bus, and 120-pin castellated holes. Supports Linux, RTOS, and bare-metal via AMP.

[Details](https://openhardware.directory/devices/waveshare-luckfox-core3506) | [Markdown](https://openhardware.directory/devices/waveshare-luckfox-core3506/md)

## Waveshare RP2350-CAN

Pico-compatible development board with RP2350A MCU, onboard CAN V2.0B bus interface (XL2515 controller + SIT65HVD230DR transceiver), 4MB flash, 26 GPIO pins, castellated module design, and USB-C connectivity for automotive and industrial CAN bus applications.

[Details](https://openhardware.directory/devices/waveshare-rp2350-can) | [Markdown](https://openhardware.directory/devices/waveshare-rp2350-can/md)

## 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 applications.

[Details](https://openhardware.directory/devices/waveshare-esp32-s3-rs485-can) | [Markdown](https://openhardware.directory/devices/waveshare-esp32-s3-rs485-can/md)

## LuckFox Core1106

Compact 30x30mm Rockchip RV1106 compute module with ARM Cortex-A7, up to 1 TOPS NPU, 5MP ISP, 256MB DDR3L, 8GB eMMC, optional WiFi 6 and BLE 5.2, dual MIPI CSI camera inputs, and 112 castellated holes. Designed for vision AI and IoT integration.

[Details](https://openhardware.directory/devices/waveshare-luckfox-core1106) | [Markdown](https://openhardware.directory/devices/waveshare-luckfox-core1106/md)

## Waveshare RP2350-Matrix

Compact RP2350A development board with an 8x8 WS2812 addressable RGB LED matrix, QMI8658 6-axis IMU (accelerometer + gyroscope), 16MB flash, 25 GPIO pins, HSTX interface, and USB-C for interactive LED displays and motion-controlled projects.

[Details](https://openhardware.directory/devices/waveshare-rp2350-matrix) | [Markdown](https://openhardware.directory/devices/waveshare-rp2350-matrix/md)

## Waveshare RP2040-BLE

A compact RP2040-based module with Bluetooth 5.1 dual-mode (BLE + Classic SPP) connectivity, 2MB flash, 14 GPIO pins, ceramic antenna, and castellated edge design for embedded Bluetooth applications.

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

## LuckFox Core3576 Module

Rockchip RK3576 SO-DIMM compute module with octa-core A72+A53, 6 TOPS NPU, Mali G52 GPU, up to 8GB LPDDR4X, 64GB eMMC, triple display output (HDMI 2.1 + eDP + MIPI DSI), triple camera input, dual Gigabit Ethernet, PCIe 2.1, and 260-pin connector. Module-only for custom carrier board integration.

[Details](https://openhardware.directory/devices/waveshare-luckfox-core3576-module) | [Markdown](https://openhardware.directory/devices/waveshare-luckfox-core3576-module/md)

## Olimex ESP32-C6-EVB

Open-source hardware evaluation board with ESP32-C6, 4 mains-rated relays, 4 opto-isolated inputs, and WiFi 6/Thread/Zigbee/Matter connectivity for home and industrial automation.

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

## Olimex ESP32-C6-DevKit-Lipo

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.

[Details](https://openhardware.directory/devices/olimex-esp32-c6-devkit-lipo) | [Markdown](https://openhardware.directory/devices/olimex-esp32-c6-devkit-lipo/md)

## Olimex ESP32-H2-DevKit-LiPo

Ultra-affordable open-source ESP32-H2 dev board for Thread, Zigbee, and Matter — BLE 5, LiPo charging, Qwiic/Stemma, dual USB-C, for €5.95.

[Details](https://openhardware.directory/devices/olimex-esp32-h2-devkit-lipo) | [Markdown](https://openhardware.directory/devices/olimex-esp32-h2-devkit-lipo/md)

## DFRobot FireBeetle 2 ESP32-C6

Low-cost ESP32-C6 IoT board with WiFi 6, BLE 5, Thread, Zigbee, Matter, solar panel charging with MPPT, and ultra-low 16µA deep sleep — for $5.90.

[Details](https://openhardware.directory/devices/dfrobot-firebeetle-2-esp32-c6) | [Markdown](https://openhardware.directory/devices/dfrobot-firebeetle-2-esp32-c6/md)

## DFRobot Beetle ESP32-C6

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.

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

## Seeed Studio XIAO ESP32C6

Thumb-sized (21×17.8mm) Matter/Thread/Zigbee/WiFi 6/BLE 5.3 dev board with dual RISC-V cores, onboard antenna, 15µA deep sleep, and hardware security — for ~$5.

[Details](https://openhardware.directory/devices/seeed-xiao-esp32c6) | [Markdown](https://openhardware.directory/devices/seeed-xiao-esp32c6/md)

## Adafruit ESP32-C6 Feather

Open-source Feather-form-factor ESP32-C6 board with WiFi 6, BLE 5, Thread, Zigbee, STEMMA QT, NeoPixel, LiPo charging with MAX17048, and CircuitPython support — $14.95.

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

## M5Stack NanoH2

Ultra-compact ESP32-H2 dev module with Thread 1.4, Zigbee 3.0, Matter, and BLE 5 — featuring a Grove port, IR transmitter, and RGB LED in a stamp-sized 23.5×12mm form factor.

[Details](https://openhardware.directory/devices/m5stack-nanoh2) | [Markdown](https://openhardware.directory/devices/m5stack-nanoh2/md)

## Espressif ESP Thread Border Router

Official Espressif dual-SoC development board combining ESP32-S3 (host) and ESP32-H2 (radio co-processor) to build Thread 1.3 border routers and Zigbee gateways with Matter support over WiFi.

[Details](https://openhardware.directory/devices/espressif-esp-thread-border-router) | [Markdown](https://openhardware.directory/devices/espressif-esp-thread-border-router/md)

## Espressif ESP32-C6-DevKitC-1

Official Espressif development board for the ESP32-C6, combining WiFi 6, BLE 5, and IEEE 802.15.4 (Thread/Zigbee/Matter) on a RISC-V single-core SoC — ideal for Matter-native IoT and smart home development.

[Details](https://openhardware.directory/devices/espressif-esp32-c6-devkitc-1) | [Markdown](https://openhardware.directory/devices/espressif-esp32-c6-devkitc-1/md)

## Khadas Edge 2

Ultra-thin 82×57.5×5.7mm RK3588S SBC with WiFi 6, Bluetooth 5.0, USB-C DisplayPort, four independent display outputs, and a 6 TOPS NPU — the thinnest RK3588S single-board computer available.

[Details](https://openhardware.directory/devices/khadas-edge-2) | [Markdown](https://openhardware.directory/devices/khadas-edge-2/md)

## Mekotronics R58-HD

Triple RK3588 multi-display SBC with 6 HDMI outputs for video walls and digital signage, running Armbian Linux.

[Details](https://openhardware.directory/devices/mekotronics-r58-hd) | [Markdown](https://openhardware.directory/devices/mekotronics-r58-hd/md)

## Khadas VIM1S

Compact single-board computer with the Amlogic S905Y4 quad-core SoC, 4GB LPDDR4, 32GB eMMC, Wi-Fi 5, Bluetooth 5.1, and 100Mbps Ethernet — supported by Armbian.

[Details](https://openhardware.directory/devices/khadas-vim1s) | [Markdown](https://openhardware.directory/devices/khadas-vim1s/md)

## Radxa Rock 5 ITX

Mini-ITX single-board computer powered by Rockchip RK3588 with 16GB LPDDR4X, dual NVMe slots, dual 2.5GbE, PCIe x4, ATX power, and WiFi 6 — a true desktop motherboard replacement.

[Details](https://openhardware.directory/devices/radxa-rock-5-itx) | [Markdown](https://openhardware.directory/devices/radxa-rock-5-itx/md)

## NanoPi R6S

FriendlyElec NanoPi R6S — compact RK3588S router SBC with triple Ethernet ports (2× 2.5GbE + 1× GbE), 4GB/8GB LPDDR4X RAM, and 32GB eMMC for high-performance network routing and edge computing.

[Details](https://openhardware.directory/devices/friendlyelec-nanopi-r6s) | [Markdown](https://openhardware.directory/devices/friendlyelec-nanopi-r6s/md)

## Radxa Dragon Q6A

Radxa Dragon Q6A — Qualcomm QCM6490 industrial SBC with 5G modem, 8GB LPDDR5, 64GB/128GB eMMC, WiFi 6E, Bluetooth 5.2, and USB-C for industrial edge computing.

[Details](https://openhardware.directory/devices/radxa-dragon-q6a) | [Markdown](https://openhardware.directory/devices/radxa-dragon-q6a/md)

## WiFi LoRa 32 (V3)

Compact ESP32-S3 + SX1262 LoRa development board with 0.96" OLED display, USB-C, and built-in LiPo charging. One of the primary boards for Meshtastic and LoRaWAN IoT projects.

[Details](https://openhardware.directory/devices/wifi-lora-32-v3) | [Markdown](https://openhardware.directory/devices/wifi-lora-32-v3/md)

## WiFi LoRa 32 (V4)

Upgraded ESP32-S3R2 + SX1262 LoRa dev board with 2MB PSRAM, 16MB flash, 0.96" OLED, switchable FPC/IPEX 2.4G antenna, GNSS interface, and solar input. Meshtastic and LoRaWAN ready.

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

## Adafruit Feather M0 Bluefruit LE

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.

[Details](https://openhardware.directory/devices/adafruit-feather-m0-bluefruit-le) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m0-bluefruit-le/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)

## Adafruit Feather M0 WiFi (ATSAMD21 + ATWINC1500)

ARM Cortex-M0+ Feather board with ATWINC1500 802.11 b/g/n WiFi, 256KB flash, 32KB RAM, 10 analog inputs, and built-in LiPo charger. FCC-certified WiFi for IoT and connected projects.

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

## Adafruit METRO 328

Arduino UNO-compatible development board built around the ATmega328P at 16 MHz with 32KB flash, micro USB, and Adafruit's signature black PCB with gold-plated pads.

[Details](https://openhardware.directory/devices/adafruit-metro-328) | [Markdown](https://openhardware.directory/devices/adafruit-metro-328/md)

## Adafruit GEMMA M0

Coin-sized wearable microcontroller board with ATSAMD21E18 Cortex M0+ at 48MHz, 3 I/O sew pads, built-in RGB DotStar LED, and CircuitPython pre-installed. Designed for e-textiles and wearable projects.

[Details](https://openhardware.directory/devices/adafruit-gemma-m0) | [Markdown](https://openhardware.directory/devices/adafruit-gemma-m0/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 QT Py RP2040

Tiny RP2040-based dev board in the QT Py / Seeed XIAO form factor, featuring 8MB flash, USB-C, a NeoPixel, and a STEMMA QT connector for solderless I2C sensor wiring.

[Details](https://openhardware.directory/devices/adafruit-qt-py-rp2040) | [Markdown](https://openhardware.directory/devices/adafruit-qt-py-rp2040/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 M0 WiFi with uFL

Variant of the Feather M0 WiFi (ATSAMD21 + ATWINC1500) with a u.FL antenna connector instead of a PCB trace antenna, allowing use of an external antenna for improved WiFi range.

[Details](https://openhardware.directory/devices/adafruit-feather-m0-wifi-ufl) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m0-wifi-ufl/md)

## Adafruit FLORA v3

Round, sewable Arduino-compatible wearable platform with ATmega32u4, native USB, NeoPixel, JST battery connector, and alligator-clip-friendly pads in a 45mm diameter form factor.

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

## Adafruit Metro M7 with AirLift

Arduino UNO-compatible Metro board powered by NXP iMX RT1011 at 500 MHz with an ESP32 AirLift WiFi co-processor, 8 MB QSPI Flash, and USB-C — Adafruit's fastest Metro ever.

[Details](https://openhardware.directory/devices/adafruit-metro-m7-airlift) | [Markdown](https://openhardware.directory/devices/adafruit-metro-m7-airlift/md)

## Adafruit Feather RP2040 SCORPIO

RP2040 Feather board with 8 consecutive 5V-level-shifted PIO outputs dedicated to NeoPixel LED strip control, 8MB flash, USB-C, and LiPo charging.

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

## Adafruit HalloWing M4 Express

Skull-shaped ATSAMD51J19 dev board (120MHz Cortex-M4F) with a 1.54" 240×240 IPS TFT, 4 capacitive touch inputs, 4 NeoPixels, accelerometer, speaker driver, and LiPoly charging. Perfect for Halloween props and wearables.

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

## Adafruit FunHouse

WiFi IoT automation board with ESP32-S2, built-in 1.54″ color TFT, barometric pressure, humidity, temperature sensors, DotStar LEDs, capacitive touch, and a speaker.

[Details](https://openhardware.directory/devices/adafruit-funhouse) | [Markdown](https://openhardware.directory/devices/adafruit-funhouse/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)

## ESP32-C6-WROOM-1-N4 Module

Espressif ESP32-C6 WROOM module with 4MB flash and PCB antenna, supporting Wi-Fi 6 (802.11ax), Bluetooth 5 LE, Zigbee 3.0, and Thread — for soldering onto custom IoT hardware.

[Details](https://openhardware.directory/devices/esp32-c6-wroom-1-n4) | [Markdown](https://openhardware.directory/devices/esp32-c6-wroom-1-n4/md)

## ESP32-C6-WROOM-1-N8 Module

Espressif ESP32-C6 WROOM module with 8MB flash and PCB antenna, supporting Wi-Fi 6 (802.11ax), Bluetooth 5 LE, Zigbee 3.0, and Thread — for soldering onto custom IoT hardware.

[Details](https://openhardware.directory/devices/esp32-c6-wroom-1-n8) | [Markdown](https://openhardware.directory/devices/esp32-c6-wroom-1-n8/md)

## BBC micro:bit v1

Pocket-sized educational microcontroller with nRF51822, 5×5 LED matrix, accelerometer, magnetometer, Bluetooth LE, 2 buttons, and 19 I/O pins. Designed for teaching coding to children and beginners via MakeCode or MicroPython.

[Details](https://openhardware.directory/devices/bbc-microbit-v1) | [Markdown](https://openhardware.directory/devices/bbc-microbit-v1/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)

## ESP32-C6-DevKitC-1-N8

Espressif reference development board for the ESP32-C6 with 8MB flash, Wi-Fi 6, Bluetooth 5 LE, Zigbee 3.0, Thread, RGB LED, dual USB-C ports, and full GPIO breakout.

[Details](https://openhardware.directory/devices/esp32-c6-devkitc-1-n8) | [Markdown](https://openhardware.directory/devices/esp32-c6-devkitc-1-n8/md)

## Circuit Playground Bluefruit

Round educational microcontroller with Nordic nRF52840 (64MHz Cortex-M4F + BLE), 10 NeoPixels, accelerometer, microphone, light sensor, speaker, 8 alligator-clip I/O pads, and USB. Runs CircuitPython, MakeCode, and Arduino.

[Details](https://openhardware.directory/devices/circuit-playground-bluefruit) | [Markdown](https://openhardware.directory/devices/circuit-playground-bluefruit/md)

## Adafruit ESP32-S2 Feather

Feather-format ESP32-S2 board with 4 MB flash, 2 MB PSRAM, native USB-C, STEMMA QT, LiPoly charging, and MAX17048 battery monitor — WiFi IoT in the Feather ecosystem.

[Details](https://openhardware.directory/devices/adafruit-esp32-s2-feather) | [Markdown](https://openhardware.directory/devices/adafruit-esp32-s2-feather/md)

## Adafruit Feather RP2040 with DVI Output

RP2040 Feather board with a DVI/HDMI-compatible output port for driving displays at up to 800×480, plus LiPo charging, USB-C, NeoPixel, and STEMMA QT.

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

## TinyS2 ESP32-S2

Ultra-compact ESP32-S2 development board by Unexpected Maker in the TinyPICO form factor, with 4 MB flash, 2 MB PSRAM, native USB, WiFi, and LiPo charging at just 17.8 × 41 mm.

[Details](https://openhardware.directory/devices/tinys2-esp32-s2) | [Markdown](https://openhardware.directory/devices/tinys2-esp32-s2/md)

## Pycom SiPy

ESP32-based MicroPython development board with WiFi, Bluetooth LE, and +22dBm SigFox radio (RCZ2/RCZ4). Breadboard-compatible with ultra-low power modes, ideal for long-range sub-GHz IoT deployments.

[Details](https://openhardware.directory/devices/pycom-sipy) | [Markdown](https://openhardware.directory/devices/pycom-sipy/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 GEMMA v2

Tiny 27mm round sewable wearable microcontroller with ATtiny85 at 8 MHz, 3 GPIO, Micro USB programming, 3.3V power, and reverse-polarity protection — ideal for small LED and NeoPixel wearable projects.

[Details](https://openhardware.directory/devices/adafruit-gemma-v2) | [Markdown](https://openhardware.directory/devices/adafruit-gemma-v2/md)

## Adafruit Metro RP2350 with PSRAM

The Adafruit Metro RP2350 with PSRAM is an Arduino Uno–footprint development board powered by the RP2350 chip, featuring 16MB flash, 520KB SRAM, and 8MB QSPI PSRAM for expanded dynamic memory — ideal for data-intensive CircuitPython and C/C++ projects.

[Details](https://openhardware.directory/devices/adafruit-metro-rp2350-psram) | [Markdown](https://openhardware.directory/devices/adafruit-metro-rp2350-psram/md)

## Adafruit MACROPAD RP2040

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.

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

## Adafruit Feather RP2040 RFM69 868/915 MHz

RP2040 Feather with integrated RFM69HCW 868/915 MHz packet radio transceiver, 8MB flash, LiPo charging, STEMMA QT, and uFL antenna connector for long-range wireless mesh networks.

[Details](https://openhardware.directory/devices/adafruit-feather-rp2040-rfm69) | [Markdown](https://openhardware.directory/devices/adafruit-feather-rp2040-rfm69/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)

## PIC32 Pinguino

The PIC32 Pinguino is an open-source Arduino-form-factor development board based on the Microchip PIC32MX440F256H 32-bit processor at 80MHz, with industrial-grade power input, LiPo battery support, and UEXT expansion connector.

[Details](https://openhardware.directory/devices/pic32-pinguino) | [Markdown](https://openhardware.directory/devices/pic32-pinguino/md)

## Adafruit Feather RP2040 with RFM95 LoRa 915 MHz

RP2040 Feather with integrated RFM95W LoRa radio at 915 MHz (SX1276), 8MB flash, up to 20 km range, LiPo charging, STEMMA QT, and uFL antenna connector.

[Details](https://openhardware.directory/devices/adafruit-feather-rp2040-rfm95) | [Markdown](https://openhardware.directory/devices/adafruit-feather-rp2040-rfm95/md)

## Adafruit ESP32-S2 Feather with w.FL Antenna

The Adafruit ESP32-S2 Feather with w.FL is a Feather-form WiFi microcontroller board with a w.FL (MHF4) external antenna connector for extended range. It features a 240MHz ESP32-S2 single-core CPU, 4MB flash, 2MB PSRAM, native USB-C, and LiPo battery charging — no Bluetooth.

[Details](https://openhardware.directory/devices/adafruit-feather-esp32-s2-wfl) | [Markdown](https://openhardware.directory/devices/adafruit-feather-esp32-s2-wfl/md)

## Adafruit Trinket 3.3V

Tiny 27×15mm Arduino-compatible microcontroller board with ATtiny85 at 8 MHz, 3.3V logic, 8KB flash, 3 GPIO pins, and Micro USB programming for minimal space-constrained projects.

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

## ESP32-S3 Box

Espressif AIoT development kit with ESP32-S3, a 2.4″ 320×240 capacitive touchscreen, dual microphones, speaker, 16 MB Flash, 8 MB PSRAM, WiFi, BLE 5, and Pmod expansion.

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

## Adafruit Trinket 5V

Tiny 31×15mm Arduino-compatible microcontroller with ATtiny85 at 8–16 MHz, 5V logic, 8KB flash, 3 GPIO pins, and Micro USB — the 5V variant for interfacing with 5V sensors and NeoPixel LEDs.

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

## ESP32-H2-DevKitM-1-N4S

Espressif development board for the ESP32-H2 with Bluetooth 5 LE, Zigbee 3.0, Thread, and Matter support, 4MB flash, USB-C, RGB LED, and full GPIO breakout — no Wi-Fi.

[Details](https://openhardware.directory/devices/esp32-h2-devkitm-1-n4s) | [Markdown](https://openhardware.directory/devices/esp32-h2-devkitm-1-n4s/md)

## Raspberry Pi Pico 2

The Raspberry Pi Pico 2 is an RP2350-based microcontroller board with dual ARM Cortex-M33 or RISC-V Hazard3 cores at 150MHz, 520KB SRAM, and 4MB flash. It doubles the RAM and flash of the original Pico while retaining pin compatibility — available with or without pre-soldered headers.

[Details](https://openhardware.directory/devices/raspberry-pi-pico-2) | [Markdown](https://openhardware.directory/devices/raspberry-pi-pico-2/md)

## Adafruit ItsyBitsy nRF52840 Express

Tiny breadboard-friendly Bluetooth LE board with Nordic nRF52840 Cortex-M4F @ 64MHz, 1MB Flash, 256KB RAM, 2MB QSPI Flash, 21 GPIO, and native USB — all in a 36×17.6mm footprint. Supports CircuitPython and Arduino.

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

## ESP32-H2-MINI-1 Module

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.

[Details](https://openhardware.directory/devices/esp32-h2-mini-1) | [Markdown](https://openhardware.directory/devices/esp32-h2-mini-1/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 Feather RP2040 with USB Type A Host

RP2040 Feather with a dedicated USB Type-A host port powered by a 5V boost converter, enabling connection to USB devices like keyboards, mice, and MIDI controllers alongside standard USB-C programming.

[Details](https://openhardware.directory/devices/adafruit-feather-rp2040-usb-host) | [Markdown](https://openhardware.directory/devices/adafruit-feather-rp2040-usb-host/md)

## Adafruit Feather nRF52840 Sense

Sensor-rich BLE Feather with Nordic nRF52840 (64MHz Cortex-M4F), 6 onboard sensors (9-DoF IMU, magnetometer, proximity/light, PDM mic, humidity, barometric pressure), 21 GPIO, and FCC/IC/TELEC certified.

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

## ProS3[D] ESP32-S3 by Unexpected Maker

The ProS3[D] is Unexpected Maker's flagship ESP32-S3 development board featuring a dual antenna system (onboard 3D high-gain + u.FL for external), an I2C battery fuel gauge, 16MB flash, 8MB PSRAM, dual 700mA LDOs, and STEMMA QT — with software-switchable RF routing.

[Details](https://openhardware.directory/devices/pros3d-esp32-s3) | [Markdown](https://openhardware.directory/devices/pros3d-esp32-s3/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)

## Adafruit Pro Trinket 5V

Compact ATmega328P-based Arduino-compatible board at 16 MHz, 5V, with 28KB flash, 18 GPIO, Micro USB, FTDI header, and mounting holes — a miniaturized UNO with battery-friendly power management.

[Details](https://openhardware.directory/devices/adafruit-pro-trinket-5v) | [Markdown](https://openhardware.directory/devices/adafruit-pro-trinket-5v/md)

## 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.

[Details](https://openhardware.directory/devices/adafruit-kb2040) | [Markdown](https://openhardware.directory/devices/adafruit-kb2040/md)

## Adafruit Feather M0 RFM69HCW 868/915 MHz

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.

[Details](https://openhardware.directory/devices/adafruit-feather-m0-rfm69hcw-868-915) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m0-rfm69hcw-868-915/md)

## Netduino 3

The Netduino 3 is an open-source .NET Micro Framework development board powered by the STM32F427VG ARM Cortex-M4 at 168MHz, featuring Arduino shield compatibility, 3 GOBUS ports, and 6 analog input channels for C# embedded development.

[Details](https://openhardware.directory/devices/netduino-3) | [Markdown](https://openhardware.directory/devices/netduino-3/md)

## Adafruit ESP32-S2 Feather with BME280

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.

[Details](https://openhardware.directory/devices/adafruit-esp32-s2-feather-bme280) | [Markdown](https://openhardware.directory/devices/adafruit-esp32-s2-feather-bme280/md)

## FeatherS3[D] ESP32-S3 by Unexpected Maker

The FeatherS3[D] is Unexpected Maker's Feather-form ESP32-S3 board with a dual antenna system (onboard + u.FL, software-switchable), I2C battery fuel gauge, 16MB flash, 8MB PSRAM, two STEMMA QT connectors, and LiPo charging — all in the standard Adafruit Feather footprint.

[Details](https://openhardware.directory/devices/feathers3d-esp32-s3) | [Markdown](https://openhardware.directory/devices/feathers3d-esp32-s3/md)

## Adafruit Feather M0 RFM69HCW 433 MHz

ATSAMD21G18 ARM Cortex-M0+ Feather board with RFM69HCW sub-GHz radio at 433 MHz. Up to +20 dBm TX power, AES-128 encryption, 256KB flash, 32KB RAM, native USB, and built-in LiPo charger.

[Details](https://openhardware.directory/devices/adafruit-feather-m0-rfm69hcw-433) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m0-rfm69hcw-433/md)

## TinyS3 ESP32-S3 with u.FL

Ultra-compact ESP32-S3 board by Unexpected Maker in TinyPICO form factor with u.FL external antenna connector, 8MB flash, 8MB PSRAM, LiPo charging, and dual-core 240 MHz.

[Details](https://openhardware.directory/devices/tinys3-esp32-s3-ufl) | [Markdown](https://openhardware.directory/devices/tinys3-esp32-s3-ufl/md)

## TinyS3[D] ESP32-S3 by Unexpected Maker

The TinyS3[D] is Unexpected Maker's ultra-compact ESP32-S3 board in the TinyPICO form factor, featuring a dual antenna system (onboard + u.FL, software-switchable), I2C battery fuel gauge, 8MB flash, 8MB PSRAM, LiPo charging, and 17 GPIO pins — all in a tiny castellated module.

[Details](https://openhardware.directory/devices/tinys3d-esp32-s3) | [Markdown](https://openhardware.directory/devices/tinys3d-esp32-s3/md)

## FeatherS3 ESP32-S3 with u.FL

Unexpected Maker's pro ESP32-S3 Feather board with u.FL external antenna connector, 16MB flash, 8MB PSRAM, dual STEMMA QT connectors, LiPo charging, and dual 700mA regulators.

[Details](https://openhardware.directory/devices/feathers3-esp32-s3-ufl) | [Markdown](https://openhardware.directory/devices/feathers3-esp32-s3-ufl/md)

## ESP32-S3-DevKitC-1

Espressif official ESP32-S3 development board with ESP32-S3-WROOM-1 module, dual-core 240 MHz LX7, up to 45 GPIO, dual USB ports, and available in three memory variants: 8MB/2MB PSRAM, 8MB/8MB PSRAM, and 32MB/16MB PSRAM (WROOM-2).

[Details](https://openhardware.directory/devices/esp32-s3-devkitc-1) | [Markdown](https://openhardware.directory/devices/esp32-s3-devkitc-1/md)

## Adafruit HUZZAH ESP8266 Breakout

Breadboard-friendly ESP8266 WiFi breakout at 80 MHz with 802.11 b/g/n, 9 GPIO, 3.3V logic, 500mA regulator, and pre-loaded NodeMCU firmware — Adafruit's accessible entry point to ESP8266 development.

[Details](https://openhardware.directory/devices/adafruit-huzzah-esp8266) | [Markdown](https://openhardware.directory/devices/adafruit-huzzah-esp8266/md)

## ESP32-S2-WROVER Module

Bare WiFi module with Espressif ESP32-S2 single-core Xtensa LX7 @ 240MHz, 4MB Flash, 2MB PSRAM, 802.11b/g/n, native USB 1.1 OTG, and SMD pads. Intended for integration onto custom PCBs, not a standalone dev board.

[Details](https://openhardware.directory/devices/esp32-s2-wrover-module) | [Markdown](https://openhardware.directory/devices/esp32-s2-wrover-module/md)

## Adafruit Feather M0 RFM95 LoRa 900 MHz

ATSAMD21G18 ARM Cortex-M0+ Feather board with RFM95W SX1276 LoRa radio for 868/915 MHz. Achieves 2+ km range, supports LoRaWAN, 256KB flash, 32KB RAM, native USB, and built-in LiPo charger.

[Details](https://openhardware.directory/devices/adafruit-feather-m0-rfm95-lora-900) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m0-rfm95-lora-900/md)

## ProS3 ESP32-S3 with u.FL

Unexpected Maker's ProS3 ESP32-S3 with u.FL external antenna, 16MB flash, 8MB PSRAM, 27 GPIO castellated headers, dual LDO regulators, LiPo charging, and STEMMA QT.

[Details](https://openhardware.directory/devices/pros3-esp32-s3-ufl) | [Markdown](https://openhardware.directory/devices/pros3-esp32-s3-ufl/md)

## ESP32-S3-DevKitM-1

Espressif official ESP32-S3 development board using the compact ESP32-S3-MINI-1 module, with dual-core 240 MHz LX7, 8 MB flash, up to 45 GPIO, dual USB ports, and smaller footprint than the WROOM-1.

[Details](https://openhardware.directory/devices/esp32-s3-devkitm-1) | [Markdown](https://openhardware.directory/devices/esp32-s3-devkitm-1/md)

## Adafruit Metro Mini 328 V2

Breadboard-friendly ATmega328P Arduino-compatible board at 16 MHz, 5V, with USB-C, STEMMA QT I2C port, 32KB flash, and CP2102N USB-serial chip — a compact modern drop-in for the Arduino UNO.

[Details](https://openhardware.directory/devices/adafruit-metro-mini-328) | [Markdown](https://openhardware.directory/devices/adafruit-metro-mini-328/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 Feather M0 RFM96 LoRa 433 MHz

ATSAMD21G18 ARM Cortex-M0+ Feather board with RFM96W SX1278 LoRa radio for 433 MHz. Achieves 2+ km range, supports LoRaWAN, 256KB flash, 32KB RAM, native USB, and built-in LiPo charger.

[Details](https://openhardware.directory/devices/adafruit-feather-m0-rfm96-lora-433) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m0-rfm96-lora-433/md)

## ESP32-S2-WROVER-I Module with uFL

Bare WiFi module with ESP32-S2 Xtensa LX7 @ 240MHz, 4MB Flash, 2MB PSRAM, 802.11b/g/n, native USB OTG, and a uFL connector for an external antenna. Drop-in variant of the WROVER for improved RF range.

[Details](https://openhardware.directory/devices/esp32-s2-wrover-i-module-with-ufl) | [Markdown](https://openhardware.directory/devices/esp32-s2-wrover-i-module-with-ufl/md)

## Adafruit ESP32-S3 Feather (8MB Flash, No PSRAM)

Feather-format ESP32-S3 dual-core 240 MHz board with 8 MB flash, native USB-C, BLE, WiFi, STEMMA QT, LiPoly charging, and MAX17048 — no PSRAM variant for leaner memory budgets.

[Details](https://openhardware.directory/devices/adafruit-esp32-s3-feather-8mb) | [Markdown](https://openhardware.directory/devices/adafruit-esp32-s3-feather-8mb/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)

## ESP32-C3-DevKit-RUST-2

Espressif RISC-V dev board optimized for Rust programming, featuring ESP32-C3-MINI-1 with 4MB flash, Wi-Fi, BT5, onboard ICM-42670-P IMU, SHTC3 temperature/humidity sensor, and USB-C.

[Details](https://openhardware.directory/devices/esp32-c3-devkit-rust-2) | [Markdown](https://openhardware.directory/devices/esp32-c3-devkit-rust-2/md)

## Adafruit QT Py ESP32-S2

Tiny Seeed XIAO-compatible ESP32-S2 dev board with 4 MB flash, 2 MB PSRAM, native USB-C, STEMMA QT, WiFi, 13 GPIO, and 10 ADC inputs — no Bluetooth, all in a 21.8 × 17.9 mm footprint.

[Details](https://openhardware.directory/devices/adafruit-qt-py-esp32-s2) | [Markdown](https://openhardware.directory/devices/adafruit-qt-py-esp32-s2/md)

## ESP32-S2 Saola 1R Dev Kit

Espressif official ESP32-S2-WROVER development board with dual 20-pin headers (breadboard-friendly), 8MB Flash, 2MB PSRAM, WiFi, dual Micro-USB (native USB + UART bridge), NeoPixel RGB LED, and boot/reset buttons.

[Details](https://openhardware.directory/devices/esp32-s2-saola-1r-dev-kit) | [Markdown](https://openhardware.directory/devices/esp32-s2-saola-1r-dev-kit/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 Feather 32u4 Basic Proto

Feather-format ATmega32u4 board at 8 MHz, 3.3V with LiPo charging, native USB, onboard prototyping area, 20 GPIO, JST battery connector, and 100mA integrated charger — all in 51×23mm.

[Details](https://openhardware.directory/devices/adafruit-feather-32u4-basic-proto) | [Markdown](https://openhardware.directory/devices/adafruit-feather-32u4-basic-proto/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)

## ESP32-S2 Kaluga Dev Kit

Espressif's multimedia-focused ESP32-S2 evaluation platform bundling four extension boards: audio player, capacitive touch panel, 3.2" LCD display, and camera module. Designed to showcase ESP32-S2 human-computer interaction features.

[Details](https://openhardware.directory/devices/esp32-s2-kaluga-dev-kit) | [Markdown](https://openhardware.directory/devices/esp32-s2-kaluga-dev-kit/md)

## ESP32-C3 DevKitM-01

Espressif official RISC-V ESP32-C3 dev board with ESP32-C3-MINI-1 module, 4 MB embedded SPI Flash, WiFi 4, BLE 5, Micro-USB, RGB LED, and a compact footprint for IoT prototyping.

[Details](https://openhardware.directory/devices/esp32-c3-devkitm-01) | [Markdown](https://openhardware.directory/devices/esp32-c3-devkitm-01/md)

## Adafruit Feather M0 Basic Proto

Feather-format ATSAMD21 ARM Cortex-M0+ board at 48 MHz, 3.3V with 256KB flash, 32KB RAM, LiPo charging, native USB, 12-bit ADC/DAC, and RTC crystal — lightweight and CircuitPython-capable.

[Details](https://openhardware.directory/devices/adafruit-feather-m0-basic-proto) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m0-basic-proto/md)

## Espressif ESP32-S3-BOX-3

Open-source AIoT development kit with ESP32-S3, 2.4" touchscreen, dual microphones, speaker, Wi-Fi, BLE, Matter support, 16MB flash, 16MB PSRAM, and a high-density expansion connector.

[Details](https://openhardware.directory/devices/esp32-s3-box-3) | [Markdown](https://openhardware.directory/devices/esp32-s3-box-3/md)

## Adafruit HalloWing M0 Express

Skull-shaped wearable microcontroller with ATSAMD21G18 at 48MHz, 1.44" 128x128 TFT display, 3-axis accelerometer, light sensor, 4 capacitive touch pads, 2W speaker driver, 8MB SPI flash, and LiPo charging.

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

## Adafruit QT Py ESP32-S2 with uFL Antenna

QT Py-sized ESP32-S2 dev board with a uFL connector for an external 2.4 GHz antenna, 4 MB flash, 2 MB PSRAM, native USB-C, STEMMA QT, and 13 GPIO — for improved WiFi range.

[Details](https://openhardware.directory/devices/adafruit-qt-py-esp32-s2-ufl) | [Markdown](https://openhardware.directory/devices/adafruit-qt-py-esp32-s2-ufl/md)

## Adafruit Feather M4 CAN Express

CAN-bus-capable Feather with ATSAME51J19 ARM Cortex-M4F @ 120MHz, built-in CAN transceiver + 5V booster, USB-C, 21 GPIO, 2MB SPI Flash, dual DAC, and LiPo charging. Ideal for automotive and industrial CAN Bus projects.

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

## Espressif ESP32-S3-BOX-3B

ESP32-S3-BOX-3 bundle kit including the AIoT dev board with 2.4" touchscreen, dual mics, speaker, plus the DOCK stand, RGB LED module, USB-C cable, and Dupont wires.

[Details](https://openhardware.directory/devices/esp32-s3-box-3b) | [Markdown](https://openhardware.directory/devices/esp32-s3-box-3b/md)

## Circuit Playground Express

All-in-one ATSAMD21 learning board with 10 NeoPixels, LIS3DH accelerometer, MEMS microphone, speaker with class D amp, IR transmit/receive, 7 capacitive touch pads, and 2MB SPI flash for CircuitPython code storage.

[Details](https://openhardware.directory/devices/circuit-playground-express) | [Markdown](https://openhardware.directory/devices/circuit-playground-express/md)

## FeatherS2 ESP32-S2

Full-featured ESP32-S2 Feather-compatible board by Unexpected Maker with 16MB Flash, 8MB QSPI PSRAM, WiFi, native USB-C, 21 GPIO, STEMMA QT, APA102 RGB LED, ambient light sensor, and dual 700mA LDOs.

[Details](https://openhardware.directory/devices/feathers2-esp32-s2) | [Markdown](https://openhardware.directory/devices/feathers2-esp32-s2/md)

## Adafruit QT Py ESP32 Pico

QT Py-sized classic ESP32 board with ESP32-PICO-V3-02, 8 MB flash, 2 MB PSRAM, WiFi, dual-core, Bluetooth Classic + BLE, STEMMA QT, and 13 GPIO — without native USB.

[Details](https://openhardware.directory/devices/adafruit-qt-py-esp32-pico) | [Markdown](https://openhardware.directory/devices/adafruit-qt-py-esp32-pico/md)

## Adafruit ESP32-S3 Feather 8MB w.FL Antenna

ESP32-S3 Feather board with 8MB flash, w.FL external antenna connector (MHF3/IPEX3), native USB-C, MAX17048 battery monitor, LiPo charging, NeoPixel, and STEMMA QT.

[Details](https://openhardware.directory/devices/adafruit-feather-esp32-s3-8mb-wfl) | [Markdown](https://openhardware.directory/devices/adafruit-feather-esp32-s3-8mb-wfl/md)

## Adafruit Metro ESP32-S2

Arduino Uno-compatible WiFi dev board with ESP32-S2 single-core @ 240MHz, 4MB Flash, 2MB PSRAM, native USB-C, STEMMA QT, LiPoly charging, MAX17048 fuel gauge, barrel jack, and UNO shield compatibility.

[Details](https://openhardware.directory/devices/adafruit-metro-esp32-s2) | [Markdown](https://openhardware.directory/devices/adafruit-metro-esp32-s2/md)

## TinyS3 ESP32-S3

Ultra-compact ESP32-S3 dev board by Unexpected Maker in the TinyPICO form factor — dual-core 240 MHz LX7, 8 MB Flash, 8 MB PSRAM, WiFi, BLE 5, 17 GPIO, LiPo charging at 35 × 17.8 mm.

[Details](https://openhardware.directory/devices/tinys3-esp32-s3) | [Markdown](https://openhardware.directory/devices/tinys3-esp32-s3/md)

## Adafruit ItsyBitsy ESP32 PCB Antenna

Compact ItsyBitsy-format ESP32 board with 8MB flash, 2MB PSRAM, PCB antenna, Wi-Fi + Bluetooth Classic + BLE, 20 GPIO, NeoPixel, STEMMA QT, and Micro-B USB.

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

## FeatherS3 ESP32-S3

Pro ESP32-S3 Feather-form-factor board by Unexpected Maker — dual-core 240 MHz LX7, 16 MB Flash, 8 MB PSRAM, WiFi, BLE 5, 21 GPIO, 2× STEMMA connectors, dual LDOs, LiPo charging.

[Details](https://openhardware.directory/devices/feathers3-esp32-s3) | [Markdown](https://openhardware.directory/devices/feathers3-esp32-s3/md)

## Adafruit Feather HUZZAH ESP8266

All-in-one ESP8266 WiFi Feather board at 80 MHz with 802.11 b/g/n, USB-serial (CP2104), LiPo charging, 9 GPIO, and 4MB flash — the easiest way to add WiFi to a portable battery-powered project.

[Details](https://openhardware.directory/devices/adafruit-feather-huzzah-esp8266) | [Markdown](https://openhardware.directory/devices/adafruit-feather-huzzah-esp8266/md)

## Adafruit ItsyBitsy ESP32 wFL Antenna

Compact ItsyBitsy-format ESP32 board with 8MB flash, 2MB PSRAM, w.FL external antenna connector, Wi-Fi + Bluetooth Classic + BLE, 20 GPIO, NeoPixel, STEMMA QT, and Micro-B USB.

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

## BBC micro:bit v2

Upgraded BBC micro:bit with Nordic nRF52833 Cortex-M4F, Bluetooth 5.1, 5×5 LED matrix, 2 buttons, capacitive touch logo, built-in speaker and MEMS microphone, edge connector, and low-power mode. Same form factor as v1.

[Details](https://openhardware.directory/devices/bbc-micro-bit-v2) | [Markdown](https://openhardware.directory/devices/bbc-micro-bit-v2/md)

## ProS3 ESP32-S3

Unexpected Maker's ultimate ESP32-S3 dev board — dual-core 240 MHz LX7, 16 MB Flash, 8 MB PSRAM, WiFi, BLE 5, 27 GPIO, 2× LDOs, castellated headers, STEMMA, LiPo charging, JTAG.

[Details](https://openhardware.directory/devices/pros3-esp32-s3) | [Markdown](https://openhardware.directory/devices/pros3-esp32-s3/md)

## Adafruit Feather 32u4 Bluefruit LE

Feather-format ATmega32u4 board with integrated nRF51822 Bluetooth LE, LiPo charging, native USB, 20 GPIO, and over-the-air firmware updates — an all-in-one BLE development board for iOS and Android connectivity.

[Details](https://openhardware.directory/devices/adafruit-feather-32u4-bluefruit-le) | [Markdown](https://openhardware.directory/devices/adafruit-feather-32u4-bluefruit-le/md)

## Adafruit Monster M4SK

The Adafruit Monster M4SK is a wearable dual-display Halloween mask board powered by ATSAMD51 Cortex-M4F at 120MHz with 8MB flash, two 240×240 IPS TFT eye displays, stereo audio, microphone, STEMMA connectors, and LiPo battery support for animated eye and mask projects.

[Details](https://openhardware.directory/devices/adafruit-monster-m4sk) | [Markdown](https://openhardware.directory/devices/adafruit-monster-m4sk/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 QT Py ESP32-C3

Tiny RISC-V ESP32-C3 dev board in the QT Py / Seeed XIAO footprint with 4 MB flash, WiFi, BLE 5 with Mesh, STEMMA QT, 13 GPIO, 5 ADC inputs, and USB-C — no native USB.

[Details](https://openhardware.directory/devices/adafruit-qt-py-esp32-c3) | [Markdown](https://openhardware.directory/devices/adafruit-qt-py-esp32-c3/md)

## Arduino Zero

32-bit ARM Cortex-M0+ Arduino in UNO form factor with ATSAMD21G18 at 48 MHz, 256KB flash, 32KB SRAM, onboard EDBG debugger, dual USB ports, 12-bit ADC/DAC — designed for IoT, wearables, and robotics.

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

## Adafruit QT Py ESP32-S3

Tiny dual-core ESP32-S3 dev board in the QT Py / Seeed XIAO footprint — 8 MB flash, WiFi, BLE 5, native USB-C, STEMMA QT, 13 GPIO, 10 ADC inputs, no PSRAM variant.

[Details](https://openhardware.directory/devices/adafruit-qt-py-esp32-s3) | [Markdown](https://openhardware.directory/devices/adafruit-qt-py-esp32-s3/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 Matrix Portal M4

The Adafruit Matrix Portal M4 is a plug-in controller for HUB75 RGB LED matrix panels, featuring an ATSAMD51J19 Cortex-M4F at 120MHz, ESP32 WiFi coprocessor with TLS/SSL, LIS3DH accelerometer, USB-C power, and STEMMA QT — designed to drive 16×32 to 64×64 LED matrices directly.

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

## Adafruit ESP32-S3 Feather (4MB Flash, 2MB PSRAM)

Feather-format ESP32-S3 board with 4 MB flash and 2 MB PSRAM, dual-core 240 MHz, native USB-C, BLE 5, WiFi, STEMMA QT, LiPoly charging, and MAX17048 battery monitor.

[Details](https://openhardware.directory/devices/adafruit-esp32-s3-feather-4mb-psram) | [Markdown](https://openhardware.directory/devices/adafruit-esp32-s3-feather-4mb-psram/md)

## Adafruit Metro ESP32-S3

Arduino UNO-compatible Metro board with ESP32-S3 dual-core 240 MHz, 16 MB flash, 8 MB Octal PSRAM, WiFi, BLE 5, native USB-C, STEMMA QT, LiPoly charging, and JTAG debug header.

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

## Adafruit Metro M4 Express (ATSAMD51)

Arduino-compatible development board with ATSAMD51 ARM Cortex-M4F at 120 MHz, 512KB flash, 192KB RAM, 2MB QSPI flash, dual 1 MSPS DACs, crypto engine, NeoPixel, and native USB. CircuitPython and Arduino IDE compatible.

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

## Adafruit HUZZAH32 ESP32 Breakout

Minimal ESP32 breakout board with dual-core Xtensa LX6 at 240MHz, 520KB SRAM, 4MB flash, WiFi 802.11 b/g/n, Bluetooth Classic + BLE, 12 ADC, 2 DAC. No USB converter or battery charger — requires external FTDI/CP2104 for programming.

[Details](https://openhardware.directory/devices/adafruit-huzzah32-esp32-breakout) | [Markdown](https://openhardware.directory/devices/adafruit-huzzah32-esp32-breakout/md)

## Adafruit MagTag

The Adafruit MagTag is an ESP32-S2 WiFi e-paper IoT display board featuring a 2.9" 296×128 grayscale e-ink screen, 4 NeoPixels, LIS3DH accelerometer, 4 user buttons, STEMMA QT, USB-C, LiPo charging, and a deep-sleep current of ~250µA — ideal for low-power battery-driven IoT displays.

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

## ESP32-S3 Box Lite

Espressif AIoT dev kit — ESP32-S3, 2.4″ 320×240 display, dual MEMS microphones, speaker, 16 MB Flash, 8 MB PSRAM, WiFi, BLE 5, Pmod expansion — the dock-free Lite sibling of the ESP32-S3 Box.

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

## Arduino MKR WiFi 1010

Compact IoT Arduino with SAMD21 Cortex-M0+ @ 48MHz, u-blox NINA-W102 WiFi + Bluetooth module, ATECC508 crypto chip, 256KB Flash, 32KB SRAM, USB full-speed, LiPo charging, and MKR shield compatibility.

[Details](https://openhardware.directory/devices/arduino-mkr-wifi-1010) | [Markdown](https://openhardware.directory/devices/arduino-mkr-wifi-1010/md)

## ESP32-S2 WROOM Module

The ESP32-S2 WROOM is an Espressif WiFi module with a single-core Xtensa LX7 at 240MHz, 4MB flash, 320KB SRAM, built-in PCB antenna, native USB OTG, and rich peripheral support — a cost-effective WiFi-only module (no Bluetooth) with USB capabilities for IoT and embedded designs.

[Details](https://openhardware.directory/devices/esp32-s2-wroom-module) | [Markdown](https://openhardware.directory/devices/esp32-s2-wroom-module/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)

## Adafruit Feather RP2040

Feather-form-factor board with Raspberry Pi RP2040 dual-core Cortex-M0+ @ 133MHz, 264KB SRAM, 8MB Flash, 21 GPIO, 4 ADC, 2 PIO peripherals, USB-C with UF2 bootloader, STEMMA QT, and LiPo charging. Runs CircuitPython and MicroPython.

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

## Adafruit Feather M0 Express

ATSAMD21G18 ARM Cortex-M0+ Feather board with 2MB SPI flash for CircuitPython code storage, built-in NeoPixel, 256KB flash, 32KB RAM, native USB, and 100mA LiPo charger. The dedicated CircuitPython Feather.

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

## DC Boarduino

The DC Boarduino is a slim, breadboard-friendly Arduino-compatible development board based on the ATmega328 at 16MHz, with a 2.1mm DC barrel jack for 7–17V input, USB-TTL serial header, ICSP programming port, and a form factor optimized for direct breadboard insertion.

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

## 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 MicroPython.

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

## Adafruit HUZZAH32 – ESP32 Feather

ESP32 dual-core 240 MHz Feather board with 802.11b/g/n WiFi, Bluetooth 4.2 Classic and BLE, 4MB flash, 520KB SRAM, 12 ADC channels, 2 DACs, capacitive touch, and built-in LiPo charger.

[Details](https://openhardware.directory/devices/adafruit-huzzah32-esp32) | [Markdown](https://openhardware.directory/devices/adafruit-huzzah32-esp32/md)

## Arduino Mega ADK

The Arduino Mega R3 ADK is an ATmega2560-based development board with 54 digital I/O, 16 analog inputs, 4 hardware UARTs, and a USB Type-A host port (Android ADK) with a power boost converter — designed for interfacing with Android smartphones as a USB host for accessory development.

[Details](https://openhardware.directory/devices/arduino-mega-adk) | [Markdown](https://openhardware.directory/devices/arduino-mega-adk/md)

## Adafruit Feather nRF52 Bluefruit LE (nRF52832)

nRF52832 ARM Cortex-M4F Feather board with native Bluetooth 5 LE at 64 MHz, 512KB flash, 64KB RAM, 8 analog inputs, 12 PWM channels, and built-in LiPo charger. FCC/IC/TELEC certified for production BLE products.

[Details](https://openhardware.directory/devices/adafruit-feather-nrf52832) | [Markdown](https://openhardware.directory/devices/adafruit-feather-nrf52832/md)

## Adafruit Trinket M0

Ultra-compact ATSAMD21E18 ARM Cortex-M0+ board at 48 MHz with 256KB flash, 32KB RAM, 5 GPIO pins, built-in RGB DotStar LED, capacitive touch, native USB, and CircuitPython support. Weighs just 1.4g in 27mm × 15mm form factor.

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

## Adafruit Feather 32u4 RFM69HCW (868/915 MHz)

Feather-format development board combining the ATmega32u4 microcontroller with an RFM69HCW 868/915 MHz packet radio for low-power sub-GHz wireless applications.

[Details](https://openhardware.directory/devices/adafruit-feather-32u4-rfm69hcw) | [Markdown](https://openhardware.directory/devices/adafruit-feather-32u4-rfm69hcw/md)

## ESP32-C6 DevKitC-1-N8

Official Espressif development board featuring the ESP32-C6 — a RISC-V single-core MCU with WiFi 6, BLE 5.0, Zigbee 3.0, Thread 1.3, and native Matter support. 8MB flash, USB-C JTAG/serial.

[Details](https://openhardware.directory/devices/esp32-c6-devkitc-1) | [Markdown](https://openhardware.directory/devices/esp32-c6-devkitc-1/md)

## Adafruit Feather 32u4 RFM96 LoRa (433 MHz)

Feather-format development board combining the ATmega32u4 microcontroller with an RFM96 LoRa 433 MHz transceiver for long-range, low-power IoT applications.

[Details](https://openhardware.directory/devices/adafruit-feather-32u4-rfm96) | [Markdown](https://openhardware.directory/devices/adafruit-feather-32u4-rfm96/md)

## Adafruit Feather 32u4 RFM95 LoRa (900 MHz)

Feather-format development board combining the ATmega32u4 microcontroller with an RFM95 LoRa 868/915 MHz transceiver for long-range, low-power IoT applications.

[Details](https://openhardware.directory/devices/adafruit-feather-32u4-rfm95) | [Markdown](https://openhardware.directory/devices/adafruit-feather-32u4-rfm95/md)

## ESP32-H2 DevKitM-1-N4S

Official Espressif development board for the ESP32-H2 — a RISC-V MCU purpose-built for 802.15.4 wireless protocols: BLE 5.3, Zigbee 3.0, Thread 1.3, and Matter. No WiFi. 4MB flash, USB-C with CH343P.

[Details](https://openhardware.directory/devices/esp32-h2-devkitm-1) | [Markdown](https://openhardware.directory/devices/esp32-h2-devkitm-1/md)

## Pycom LoPy

The Pycom LoPy is a compact triple-network MicroPython-programmable board featuring ESP32 with built-in WiFi, BLE 4.2, and LoRa (SX1272) on 868/915 MHz — ideal for IoT mesh networking and asset tracking.

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

## Adafruit ItsyBitsy ESP32

Ultra-compact ESP32 development board in the ItsyBitsy form factor with WiFi, Bluetooth Classic + BLE, USB-C, and LiPo charging — perfect for space-constrained wireless projects.

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

## Pycom WiPy 3.0

The Pycom WiPy 3.0 is a compact MicroPython-programmable ESP32 board with WiFi 802.11 b/g/n and Bluetooth BLE 4.2, designed for low-power wireless IoT applications and smart-home prototyping.

[Details](https://openhardware.directory/devices/pycom-wipy-3) | [Markdown](https://openhardware.directory/devices/pycom-wipy-3/md)

## Adafruit HUZZAH32 ESP32 Feather Board

Adafruit's Feather-format ESP32 board with dual-core Xtensa LX6 @ 240MHz, WiFi b/g/n, Bluetooth Classic + BLE 4.2, built-in LiPo charger, and Feather-compatible pin layout. Great all-around wireless IoT platform.

[Details](https://openhardware.directory/devices/adafruit-huzzah32-esp32-feather) | [Markdown](https://openhardware.directory/devices/adafruit-huzzah32-esp32-feather/md)

## Adafruit Matrix Portal S3

ESP32-S3 board designed to drive HUB75 LED matrix panels directly, with built-in WiFi, BLE 5.0, native USB, STEMMA QT connector, and two user buttons — ideal for dynamic digital signage and LED art displays.

[Details](https://openhardware.directory/devices/adafruit-matrix-portal-s3) | [Markdown](https://openhardware.directory/devices/adafruit-matrix-portal-s3/md)

## Adafruit Feather M0 RFM69HCW Packet Radio (868/915 MHz)

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.

[Details](https://openhardware.directory/devices/adafruit-feather-m0-rfm69hcw) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m0-rfm69hcw/md)

## Adafruit Feather ESP32-S3

Feather-format ESP32-S3 board with native USB, WiFi, BLE 5.0, 8MB flash, LiPo charging, and full Feather ecosystem compatibility — a capable wireless development platform for CircuitPython and Arduino projects.

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

## Adafruit Feather M0 RFM96 LoRa Radio (433 MHz)

ATSAMD21G18 ARM Cortex-M0+ Feather board with RFM96 LoRa radio at 433 MHz. Spread-spectrum modulation for long-range links, 256KB flash, 32KB RAM, native USB, and built-in LiPo charger.

[Details](https://openhardware.directory/devices/adafruit-feather-m0-rfm96) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m0-rfm96/md)

## Adafruit Feather M0 RFM95 LoRa Radio (868/915 MHz)

ATSAMD21G18 ARM Cortex-M0+ Feather board with RFM95 LoRa radio at 868/915 MHz. Spread-spectrum LoRa modulation for multi-kilometre range, 256KB flash, 32KB RAM, native USB, and built-in LiPo charger.

[Details](https://openhardware.directory/devices/adafruit-feather-m0-rfm95) | [Markdown](https://openhardware.directory/devices/adafruit-feather-m0-rfm95/md)