# 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. **20 device listed.** ## LILYGO T3 LoRa32 V1.6.1 ESP32-PICO-D4 development board with LoRa SX1276/SX1278 radio, 0.96\" SSD1306 OLED, microSD slot, WiFi, Bluetooth 4.2, and LiPo battery support in a compact 66×36mm form factor. [Details](https://openhardware.directory/devices/lilygo-t3-lora32-v1-6-1) | [Markdown](https://openhardware.directory/devices/lilygo-t3-lora32-v1-6-1/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-SIM7000G ESP32 board with SIMCom SIM7000G multi-band LTE-M/NB-IoT modem, GPS, 8MB PSRAM, USB-C, and 18650 battery support — designed for global cellular IoT deployments. [Details](https://openhardware.directory/devices/lilygo-t-sim7000g) | [Markdown](https://openhardware.directory/devices/lilygo-t-sim7000g/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) ## 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) ## 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) ## 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) ## Waveshare UGV Rover Open-source 6-wheel 4WD AI robot platform with dual-controller architecture (ESP32 + Raspberry Pi), computer vision, pan-tilt camera, ESP-NOW communication, and ROS2 support for robotics education and autonomous navigation. [Details](https://openhardware.directory/devices/waveshare-ugv-rover) | [Markdown](https://openhardware.directory/devices/waveshare-ugv-rover/md) ## Waveshare WAVE ROVER Flexible 4WD mobile robot chassis with all-metal body, ESP32 controller, 0.91\" OLED, 9-axis IMU, 3S UPS power system, and open-source firmware. Supports Raspberry Pi and Jetson Nano as host computers. [Details](https://openhardware.directory/devices/waveshare-wave-rover) | [Markdown](https://openhardware.directory/devices/waveshare-wave-rover/md) ## Waveshare RaspRover Open-source 4WD AI robot with dual-controller architecture (ESP32 + Raspberry Pi), 5MP 160-degree camera, pan-tilt module, audio system, computer vision via OpenCV/MediaPipe, and ROS2 support for AI robotics education. [Details](https://openhardware.directory/devices/waveshare-rasprover) | [Markdown](https://openhardware.directory/devices/waveshare-rasprover/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) ## Heltec Wireless Stick Lite V3 Compact ESP32-S3 + SX1262 LoRa development board with WiFi, BLE 5.0, and integrated battery management. Meshtastic and LoRaWAN compatible, with a slim stick form factor ideal for IoT sensor nodes and mesh networking. [Details](https://openhardware.directory/devices/heltec-wireless-stick-lite-v3) | [Markdown](https://openhardware.directory/devices/heltec-wireless-stick-lite-v3/md) ## Heltec WiFi Kit 8 ESP8266-based IoT development board by Heltec with built-in 0.91-inch OLED display, Li-Po battery management, and WiFi connectivity in a compact 50.9x18.2mm form factor. [Details](https://openhardware.directory/devices/heltec-wifi-kit-8) | [Markdown](https://openhardware.directory/devices/heltec-wifi-kit-8/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 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) ## CubeCell Dev-Board Plus (HTCC-AB02) Heltec CubeCell HTCC-AB02 is an ultra-low-power LoRa/LoRaWAN development board based on the ASR6502 SoC (ARM Cortex-M0+ with integrated SX1262), featuring a 0.96" OLED display, solar panel input, and lithium battery management. Ideal for long-range IoT sensor nodes and agricultural monitoring. [Details](https://openhardware.directory/devices/heltec-cubecell-htcc-ab02) | [Markdown](https://openhardware.directory/devices/heltec-cubecell-htcc-ab02/md) ## Heltec HT-M00 Dual Channel LoRa Gateway A compact, low-cost dual-channel LoRaWAN gateway based on ESP32 and dual SX1276 transceivers, designed for indoor LoRa coverage of 1500-2000 square meters with support for SF7-SF12 spreading factors and LoRaWAN Class A/C protocols. [Details](https://openhardware.directory/devices/heltec-ht-m00) | [Markdown](https://openhardware.directory/devices/heltec-ht-m00/md) ## Heltec LoRa Kit 151 Ultra-low-power LoRaWAN development kit based on STM32L151CBU6 ARM Cortex-M3 MCU and Semtech SX1278 LoRa transceiver, with 6uA deep sleep current, integrated battery management, and CE certification. [Details](https://openhardware.directory/devices/heltec-lora-kit-151) | [Markdown](https://openhardware.directory/devices/heltec-lora-kit-151/md)