# 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.

**6 device listed.**

## LILYGO T-SIM7070G

ESP32-WROVER-E development board with SIM7070G NB-IoT/LTE-M/GPRS modem, GPS, Wi-Fi, Bluetooth 4.2, MicroSD, and solar charging input for ultra-low-power IoT applications.

[Details](https://openhardware.directory/devices/lilygo-t-sim7070g) | [Markdown](https://openhardware.directory/devices/lilygo-t-sim7070g/md)

## LILYGO T-SIM A7670E

ESP32-WROVER-E development board with A7670E LTE Cat-1 modem supporting voice calls, SMS, and GPS positioning. Available with multiple regional frequency variants for global 4G deployments.

[Details](https://openhardware.directory/devices/lilygo-t-sim-a7670e) | [Markdown](https://openhardware.directory/devices/lilygo-t-sim-a7670e/md)

## LILYGO T-A7608E-H

ESP32-WROVER-E development board with A7608E-H LTE Cat-1 modem supporting voice, SMS, GPS, and multi-band LTE-FDD/TDD connectivity for Europe with 18650 battery support.

[Details](https://openhardware.directory/devices/lilygo-t-a7608e-h) | [Markdown](https://openhardware.directory/devices/lilygo-t-a7608e-h/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)

## 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)

## 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)