# 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.

**3 device listed.**

## LILYGO T-SIM7670G S3

ESP32-S3-based development board with SIM7670G LTE Cat-1 modem, integrated GPS, Wi-Fi, Bluetooth 5, MicroSD, solar charging input, and 16 MB flash for high-performance IoT and asset tracking applications.

[Details](https://openhardware.directory/devices/lilygo-t-sim-7670g-s3) | [Markdown](https://openhardware.directory/devices/lilygo-t-sim-7670g-s3/md)

## madflight FC3v2 RP2350B Flight Controller

Open-source flight controller board with RP2350B MCU, 10-DOF sensor suite (gyro, accelerometer, barometer, magnetometer), INA226 battery monitor, microSD with 4-bit SDIO, and DC-DC converter. 50.7x41.6mm, 6.3g.

[Details](https://openhardware.directory/devices/madflight-fc3v2-rp2350b) | [Markdown](https://openhardware.directory/devices/madflight-fc3v2-rp2350b/md)

## Heltec Vision Master E213

ESP32-S3 development board with 2.13-inch E-Paper display and optional SX1262 LoRa radio, supporting Meshtastic, LoRaWAN, Arduino, and MicroPython. Features WiFi, BLE 5.0, ultra-low 20uA deep sleep, lithium battery management, and dual SH2.0 sensor ports.

[Details](https://openhardware.directory/devices/heltec-vision-master-e213) | [Markdown](https://openhardware.directory/devices/heltec-vision-master-e213/md)