LilyGO T-QT Pro ESP32-S3FN4R2 Wi-Fi & BLE Touchscreen Dev Board

The LilyGO T-QT Pro ESP32 is a feature-rich AIoT development board centered on the Espressif ESP32-S3FN4R2 microcontroller. It combines a dual-core LX7 processor capable of 240MHz operation with integrated 4MB flash and 2MB PSRAM, providing ample resources for graphics-intensive applications and wireless protocol stacks. The board’s primary interface is a high-resolution 128×128 pixel capacitive touchscreen, driven via a 4-wire SPI bus, enabling direct user input and visual feedback without external peripherals.

Wireless connectivity is handled by the ESP32-S3’s native 2.4GHz radio, supporting IEEE 802.11 b/g/n Wi-Fi and Bluetooth 5.0 with Low Energy (BLE) modes. This makes the board suitable for projects requiring local network communication or direct smartphone pairing. The compact PCB layout includes critical GPIOs like IO00 and IO47 for boot control and peripheral interfacing, while the inclusion of a JST 2.0mm connector and battery detection pin (IO04) facilitates low-power, portable deployments. Its design prioritizes developer efficiency, offering a complete hardware platform for prototyping interactive IoT devices, sensor dashboards, and wearable tech.