LilyGO T4-S3 ESP32-S3 2.41-Inch AMOLED Touch Display Development Board

The board is fully compatible with the Arduino IDE using the ESP32-S3 Arduino Core, Espressif's official ESP-IDF framework for advanced control, PlatformIO for a streamlined embedded workflow, and MicroPython for rapid scripting. Libraries for the AMOLED display are available in each ecosystem, requiring you to install the correct board package and driver files before uploading your first sketch or project firmware.

Use the included battery cable to connect a single-cell 3.7V Li-Po or Li-Ion battery to the dedicated 2-pin JST connector on the board. The integrated power management circuitry handles charging and stable voltage supply. Ensure your code implements proper deep sleep modes on the ESP32-S3 to maximize battery life, as the bright AMOLED display is a significant power consumer during active use.

Yes, the microSD slot is accessible via the ESP32-S3's SPI bus and can be used concurrently with the display, which uses a separate QSPI interface. You will need to initialize the SD card library in your code. The ample PSRAM helps buffer data, preventing lag during simultaneous writing to the card and updating graphics on the AMOLED screen in real-time data logging applications.

The board uses a 1.27mm pitch 30-pin header (2x15). You must solder the included female header to access GPIOs. The pinout follows standard ESP32-S3 assignments, with several pins multiplexed for the display and SD card. Consult the LilyGO schematic to identify free GPIOs, noting that pins like GPIOs 33-37 are typically available for I2C, SPI, or analog sensors after accounting for the primary display and storage functions.