LILYGO T4-S3 ESP32-S3 2.41" AMOLED Touch Display Board (With Shell, Soldered Female Pins)

Specifications

• Microcontroller: ESP32-S3R8 (Dual-core LX7, up to 240 MHz)

• Wireless: 2.4 GHz Wi-Fi (802.11 b/g/n) & Bluetooth 5 (LE)

• Flash Memory: 16MB

• PSRAM: 8MB

• Display Size: 2.41 inches diagonal

• Display Technology: SPI RGB AMOLED Touch Display

• Resolution: 450(W) x RGB x 600(H) pixels

• Brightness: 800 cd/m²

• Power Interface: USB Type-C

• Storage: Integrated Micro SD Card Slot

• Expansion: Qwiic / JST-SH 1.0mm (I2C) & JST-GH 1.25mm

• Enclosure: Black Protective Shell

• Dimensions: 59mm (L) x 46mm (W) x 14mm (H)

Key Applications and Projects

• Premium Smart Home Control Panels: Creating a wall-mounted or desktop touchscreen interface to control Philips Hue lights, thermostats, and Home Assistant automation.

• Portable Crypto & Stock Trackers: Utilizing the Wi-Fi connection and vibrant AMOLED screen to render high-contrast, real-time financial charts and data feeds.

• Advanced Industrial IoT Dashboards: Building custom diagnostic panels for machinery or server racks with fluid, touchscreen-driven UI elements.

Unlock New Capabilities (Project Evolution) The Ultimate Desktop Weather Station: Move beyond boring text readouts! Evolve your project by utilizing the ESP32-S3 to pull live weather radar maps from the internet. Because you are using a high-resolution AMOLED display, you can program the background to be completely black, saving battery power, while the vibrant radar precipitation colors "pop" off the screen with incredible clarity. Add an external BME280 sensor to the onboard Qwiic I2C port to read local room temperature, and use the capacitive touch screen to swipe between your local data and the global radar view!

PACKAGE INCLUDED

• 1 x LILYGO T4-S3 2.41" AMOLED Board (With Black Shell & Pre-Soldered Female Pins)

• 1 x JST 1.25mm Battery Power Cable

Downloads & Links

• LilyGo-AMOLED-Series Github Link

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What microcontroller drives this board? It is powered by the Espressif ESP32-S3R8 dual-core microprocessor, running at up to 240 MHz.

2. What are the specifications of the onboard screen? The screen is a premium 2.41-inch SPI RGB AMOLED display. It has a high resolution of 450x600 pixels, an 800 cd/m² brightness, and utilizes the QSPI protocol for fast rendering.

3. Does this version have a touchscreen? Yes. The 2.41-inch AMOLED panel features a fully integrated capacitive touch screen overlay for interactive user interfaces.

4. Are the header pins pre-soldered? Yes. This specific variant comes with female header sockets pre-soldered onto the board, allowing you to plug in standard male jumper wires immediately.

5. Does it come with a protective case? Yes, this model includes a sleek black protective shell pre-installed around the PCB, protecting the delicate electronics while providing a professional look.

6. How much Flash memory and RAM does it have? It features a massive 16MB of Flash memory and 8MB of PSRAM, which is essential for driving smooth, high-resolution graphics and preventing memory crashes.

7. Can I log data locally? Yes, the board features a built-in Micro SD card slot on the side, perfect for storing large UI assets (images/fonts) or logging sensor data.

8. Can I power this board with a battery? Yes. The board includes a JST 1.25mm 2-pin connector designed for a standard 3.7V Lithium Polymer (LiPo) battery, and it supports USB charging.

9. How do I program this board? You connect it to your computer via the onboard USB Type-C port. It can be programmed using the Arduino IDE, PlatformIO, or MicroPython.

10. What settings should I use in the Arduino IDE? Select "Lilygo T4 S3" from the ESP32 board manager. Ensure you set "USB CDC On Boot" to Enabled, Flash Size to 16MB (DIO), and PSRAM to OPI PSRAM.

11. Is there an easy way to connect I2C sensors? Yes. The board features a STEMMA QT / Qwiic compatible JST-SH 1.0mm connector, allowing you to plug in external I2C sensors without any soldering.

12. Does it support Wi-Fi and Bluetooth? Yes, it features standard 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE) for connecting to your local network or other smart devices.

13. What do the physical buttons on the board do? There are physical side buttons designated for Reset and Boot (used for entering flashing mode manually).

14. What are the exact dimensions of the board with the shell? The overall dimensions, including the black shell, are 59mm in length, 46mm in width, and 14mm in height.

15. What makes an AMOLED screen different from an LCD? An AMOLED screen does not use a backlight; every individual pixel creates its own light. This allows for "true blacks" (by simply turning the pixel off), infinite contrast, and much lower power consumption when displaying dark themes.

16. What GUI libraries are recommended for this board? Because of its high resolution, powerful S3 chip, and large PSRAM, this board is highly recommended for use with LVGL (Light and Versatile Graphics Library) or SquareLine Studio.

17. Which pins should I avoid using for general I/O? Pins like GPIO19 and GPIO20 are typically reserved for the internal USB lines. Always check the official LILYGO pinout diagram before attaching peripherals.

18. Can I remove the board from the black shell? Yes, the shell can be disassembled, but extreme care must be taken to avoid damaging the delicate AMOLED ribbon cable hidden inside.

19. Does it require a specific USB cable? You must ensure you are using a USB Type-C cable that supports both power AND data transfer. "Charge-only" cables will not allow your computer to recognize the device.

20. What logic voltage do the GPIO pins use? Like all ESP32 chips, the GPIO pins operate strictly on 3.3V logic. Do not apply 5V directly to any GPIO pin, or you will destroy the microcontroller.