# 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.

**8 device listed.**

## LILYGO T-OI Plus

LILYGO T-OI Plus is a compact ESP32-C3 development board with Wi-Fi, BLE 5.0, Grove connectors, and optional 16340 battery holder, designed to fit Sonoff BASICR2 enclosures.

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

## M5Stack CoreS3

Third-generation M5Stack Core with ESP32-S3 dual-core 240MHz, 2.0\" capacitive touch IPS display, GC0308 camera, dual microphones, 1W speaker, BMI270 IMU, BMM150 magnetometer, proximity sensor, RTC, 500mAh battery, and DinBase for mounting.

[Details](https://openhardware.directory/devices/m5stack-cores3) | [Markdown](https://openhardware.directory/devices/m5stack-cores3/md)

## M5Stack Atom Lite

Ultra-compact ESP32-PICO-D4 development board (24x24mm) with RGB LED, programmable button, IR transmitter, Grove port, and 6 GPIO pins. Supports Arduino, ESP-IDF, UIFlow, and MicroPython.

[Details](https://openhardware.directory/devices/m5stack-atom-lite) | [Markdown](https://openhardware.directory/devices/m5stack-atom-lite/md)

## M5Stack Cardputer-Adv

Credit-card-sized ESP32-S3 handheld computer with 56-key mechanical keyboard, 1.14" IPS display, BMI270 IMU, ES8311 audio codec, 1W speaker, MEMS microphone, IR transmitter, 1750mAh battery, Grove I2C port, and microSD slot.

[Details](https://openhardware.directory/devices/m5stack-cardputer-adv) | [Markdown](https://openhardware.directory/devices/m5stack-cardputer-adv/md)

## M5Stack Dial

ESP32-S3 smart rotary knob with 1.28" round GC9A01 touch display (240x240), rotary encoder, RFID reader (WS1850S), RTC (BM8563), buzzer, and 2 Grove ports for IoT control interfaces.

[Details](https://openhardware.directory/devices/m5stack-dial) | [Markdown](https://openhardware.directory/devices/m5stack-dial/md)

## M5Stack Air Quality Kit v1.1

ESP32-S3 based air quality monitor with SEN55 particulate/VOC sensor, SCD40 CO2 sensor, 1.54" e-ink display, 600mAh battery, and Grove connector.

[Details](https://openhardware.directory/devices/m5stack-air-quality-kit) | [Markdown](https://openhardware.directory/devices/m5stack-air-quality-kit/md)

## M5Stack ENV III Unit

I2C environmental sensor unit with SHT30 temperature/humidity and QMP6988 barometric pressure sensors. Grove connector, compatible with M5Stack ecosystem.

[Details](https://openhardware.directory/devices/m5stack-env-iii-unit) | [Markdown](https://openhardware.directory/devices/m5stack-env-iii-unit/md)

## M5Stack UnitV2 AI Camera

Linux-based standalone AI camera with SigmaStar SSD202D dual-core Cortex-A7, GC4653 4MP sensor, 128MB RAM, WiFi, and USB-C. Runs Python and V-Training for edge AI.

[Details](https://openhardware.directory/devices/m5stack-unitv2-ai-camera) | [Markdown](https://openhardware.directory/devices/m5stack-unitv2-ai-camera/md)