# LILYGO T-QT Pro

> Ultra-compact ESP32-S3 board with a 0.85-inch GC9107 IPS display (128×128), 2MB PSRAM, WiFi, BLE 5.0, and USB-C — one of the smallest ESP32-S3 development boards available.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** dev-board
- **Price:** ~$9.05
- **Product Readiness:** developer
- **CPU:** Xtensa LX7 dual-core @ 240MHz, FPU, AI vector extensions, HW crypto (AES/SHA/RSA)
- **CPU Architecture:** Xtensa LX7
- **CPU Cores:** 2
- **RAM:** 512KB SRAM
- **PSRAM:** 2MB
- **Flash:** 4MB
- **USB:** USB-C 2.0
- **Power:** 5V + LiPo
- **Operating Voltage:** 3.3V
- **Charging Port:** USB-C
- **Antenna:** Built-in PCB antenna
- **Display:** 0.85" IPS LCD 128×128

## Connectivity

- **Wifi:** 802.11 b/g/n
- **Bluetooth:** BLE 5.0

## Open Source

- **Firmware:** Yes
- **Schematics:** No
- **PCB Layout:** No

## Compatible Firmware

arduino, micropython, esphome, platformio

## Use Cases

- wearable
- smart-home-dashboard
- iot
- digital-signage

## Components

- **ESP32-S3FN4R2** (mcu): Espressif ESP32-S3FN4R2 dual-core Xtensa LX7 at 240MHz with 4MB flash, 2MB PSRAM, WiFi, BLE 5.0, and USB OTG. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32-s3_datasheet_en.pdf&ref=openhardware.directory&product=lilygo-t-qt-pro&source=md-export)
- **GC9107** (display-driver): GalaxyCore GC9107 TFT LCD driver for the 0.85-inch 128×128 IPS panel via 4-wire SPI. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fmoononournation%2FArduino_GFX%2Ffiles%2F9628833%2FGC9107_C130-IC-1-1.pdf&ref=openhardware.directory&product=lilygo-t-qt-pro&source=md-export)

## Protocols

- **SPI**: MOSI: GPIO2, CLK: GPIO3, CS: GPIO5, DC: GPIO6
- **I2C**: SDA: GPIO43, SCL: GPIO44
- **UART**: TX: GPIO43, RX: GPIO44

## GPIO Map

| Pin | Name | Type | Functions |
|-----|------|------|-----------|
| GPIO0 | Boot Button | GPIO | digital-input, strapping |
| GPIO4 | Battery Voltage ADC | ADC | digital-input, adc |
| GPIO1 | Free GPIO | GPIO | digital-input, digital-output, adc, touch |
| GPIO2 | SPI MOSI | SPI | digital-input, digital-output, touch |
| GPIO3 | SPI CLK | SPI | digital-input, digital-output, touch |
| GPIO5 | SPI CS | SPI | digital-input, digital-output |
| GPIO6 | Display DC | SPI | digital-output |
| GPIO38 | Free GPIO | GPIO | digital-input, digital-output |
| GPIO39 | Free GPIO | GPIO | digital-input, digital-output |
| GPIO40 | Free GPIO | GPIO | digital-input, digital-output |
| GPIO41 | Free GPIO | GPIO | digital-input, digital-output |
| GPIO42 | Free GPIO | GPIO | digital-input, digital-output |
| GPIO43 | UART TX / I2C SDA | UART | digital-output |
| GPIO44 | UART RX / I2C SCL | UART | digital-input |

## Description

## Overview

The LILYGO T-QT Pro is an ultra-compact ESP32-S3 development board with a tiny 0.85-inch GC9107 IPS display at 128×128 pixels. Despite its miniature form factor, the ESP32-S3FN4R2 provides dual-core Xtensa LX7 at 240MHz, 4MB flash, 2MB PSRAM, WiFi 802.11 b/g/n, and BLE 5.0 — making it a capable platform for wearable projects, smart badges, and tiny IoT nodes.

The board exposes GPIO, SPI, I2C, and UART pins on fine-pitch castellated headers and a JST battery connector for LiPo-powered operation. Battery voltage monitoring is available on IO4. With native USB on the ESP32-S3, the USB-C port supports both programming and USB HID/MIDI applications.

Programming support spans Arduino IDE and MicroPython with the T-QT GitHub repository providing display examples. The T-QT Pro is popular for miniature information displays, retro game controllers, small badge projects, and anything requiring ESP32-S3 capability in the smallest possible footprint.

## Where to Buy

- [LILYGO Official](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-qt-pro&ref=openhardware.directory&product=lilygo-t-qt-pro&source=md-export) — $9.05

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-qt-pro&ref=openhardware.directory&product=lilygo-t-qt-pro&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2FT-QT&ref=openhardware.directory&product=lilygo-t-qt-pro&source=md-export)
- [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.lilygo.cc&ref=openhardware.directory&product=lilygo-t-qt-pro&source=md-export)

## Tags

`esp32-s3`, `tiny`, `compact`, `lilygo`, `display`, `ips`, `ble5`, `badge`, `wearable`

## Images

![LILYGO T-QT Pro](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-qt-pro/d011568263fd.jpg)
![LILYGO T-QT Pro](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-qt-pro/f8e28afc819f.jpg)
![LILYGO T-QT Pro](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-qt-pro/2d630fdc13f1.jpg)
![LILYGO T-QT Pro](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-qt-pro/597fd4cfc11c.jpg)
![LILYGO T-QT Pro](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-qt-pro/b5167f763a20.jpg)
![LILYGO T-QT Pro](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-qt-pro/a4cd11379fa1.jpg)
![LILYGO T-QT Pro](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-qt-pro/cf76cdd74038.jpg)
![LILYGO T-QT Pro](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-qt-pro/ae3dae662cda.jpg)

> **Battery Powered:** Li-Po

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