# 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.

**9 device listed.**

## 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 UNIHIKER K10

All-in-one AI coding board for STEM education with ESP32-S3, 2.8-inch touchscreen, 2MP camera, microphone, speaker, environmental sensors, WiFi, Bluetooth 5, and pre-loaded AI models for vision, voice, and TinyML.

[Details](https://openhardware.directory/devices/dfrobot-unihiker-k10) | [Markdown](https://openhardware.directory/devices/dfrobot-unihiker-k10/md)

## Heltec ESP32-C3 Arduino Development Board

Ultra-compact RISC-V development board with ESP32-C3FN4, WiFi, BLE 5.0, integrated battery management, and USB-C — ideal for low-power IoT sensor nodes and wireless prototyping.

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

## Heltec Wireless Tracker V2

ESP32-S3 development board with SX1262 LoRa (28dBm), UC6580 dual-frequency GNSS, 0.96" TFT display, solar charging, and Meshtastic/MeshCore support for GPS tracking and mesh networking.

[Details](https://openhardware.directory/devices/heltec-wireless-tracker-v2) | [Markdown](https://openhardware.directory/devices/heltec-wireless-tracker-v2/md)

## Heltec Wireless Bridge

ESP32 + SX1276 LoRa multi-protocol bridge in an aluminum enclosure, converting between WiFi, Bluetooth, and LoRa with 8MB flash and 8MB PSRAM.

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

## Heltec Vision Master E290

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

[Details](https://openhardware.directory/devices/heltec-vision-master-e290) | [Markdown](https://openhardware.directory/devices/heltec-vision-master-e290/md)

## Heltec Wireless Paper

ESP32-S3 + SX1262 LoRa E-Ink development board with 2.13" e-paper display, WiFi, BLE 5.0, and LoRa connectivity. Designed for electronic shelf labels, Meshtastic mesh nodes, and low-power IoT sensor displays.

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