# 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.

**12 device listed.**

## ESP32-DIV V2.0

Open-source multi-band wireless development toolkit with ESP32-U, 2.8" ILI9341 TFT display, 5 antennas, and SD card slot covering WiFi, BLE, 2.4GHz, and Sub-GHz frequency bands for security research and spectrum analysis.

[Details](https://openhardware.directory/devices/esp32-div-v2) | [Markdown](https://openhardware.directory/devices/esp32-div-v2/md)

## Evil Crow RF V2

Open-source RF security research tool with ESP32, dual CC1101 sub-GHz transceivers (300-928MHz), and NRF24L01 2.4GHz module for penetration testing, signal analysis, and replay attacks.

[Details](https://openhardware.directory/devices/evil-crow-rf-v2) | [Markdown](https://openhardware.directory/devices/evil-crow-rf-v2/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)

## 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)

## 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)

## 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)

## 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 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)

## Heltec WiFi Kit 32 (V3)

ESP32-S3-based IoT development board with built-in 0.96" OLED display, lithium battery management, WiFi and Bluetooth 5.0 connectivity, and USB-C interface in a compact 50mm form factor.

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

## Heltec HT-DE01 Multi Size E-Ink Drive Board

A compact universal e-ink driver board based on ESP32-S3FN8 with WiFi and Bluetooth connectivity, 24-pin FFC interface compatible with most e-ink displays, USB-C and LiPo battery support, and Arduino development environment.

[Details](https://openhardware.directory/devices/heltec-ht-de01) | [Markdown](https://openhardware.directory/devices/heltec-ht-de01/md)

## BigTreeTech Manta M4P V1.0

Klipper-native 3D printer control board with STM32G0B0RE MCU and BTB connector for Raspberry Pi CM4 or BTT CB1, 4 stepper driver slots, Ethernet, USB-C, and CAN bus support.

[Details](https://openhardware.directory/devices/bigtreetech-manta-m4p-v1-0) | [Markdown](https://openhardware.directory/devices/bigtreetech-manta-m4p-v1-0/md)

## BigTreeTech Manta M8P V1.1

8-axis Klipper-native 3D printer control board with STM32G0B1VET6 MCU, BTB connector for CM4/CB1, CAN bus, eFuse protection, Ethernet, and selectable CNC fan voltage.

[Details](https://openhardware.directory/devices/bigtreetech-manta-m8p-v1-1) | [Markdown](https://openhardware.directory/devices/bigtreetech-manta-m8p-v1-1/md)