LILYGO T-Display-S3 AMOLED V2.0 - ESP32-S3 1.91" Touch Board (Soldered)

Specifications

• Microcontroller: ESP32-S3 (Dual-core, up to 240 MHz)

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

• Flash Memory: 16MB

• PSRAM: 8MB

• Display Size: 1.91 inches diagonal

• Display Technology: IPS AMOLED

• Display Driver: RM67162

• Resolution: 240 x 536 pixels

• Interaction: Capacitive Touch Screen (IO21)

• Power Interface: USB Type-C

• Battery Connector: JST-GH 1.25mm 2-Pin (3.7V LiPo support)

• Expansion Ports: 2x JST-SH 1.0mm 4-PIN (1x I2C, 1x UART)

• Dimensions: 55mm (L) x 25mm (W) x 10mm (H)

Key Applications and Projects

• High-End Crypto/Stock Tickers: Utilizing the AMOLED screen's deep blacks to display stark, high-contrast financial graphs pulled via Wi-Fi APIs.

• Premium Smart Home Remotes: Building a sleek, portable touch remote to control Philips Hue lights or Home Assistant instances.

• Rapid Breadboard Prototyping: Utilizing the pre-soldered pins to instantly connect logic analyzers, external LEDs, and complex sensor arrays on a breadboard.

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 an 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 T-Display-S3 AMOLED Board (1.91", Touch, Pre-Soldered Pins)

• 1 x Power/Battery Pigtail Cable

Downloads & Links

• LILYGO T-Display-S3 AMOLED Github Link

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What microcontroller drives this board? It is powered by the Espressif ESP32-S3 dual-core microprocessor.

2. What makes an AMOLED screen different from a standard 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 images.

3. What are the specifications of the onboard screen? The screen is a 1.91-inch AMOLED display. It has a high resolution of 240x536 pixels and is driven by the RM67162 chip.

4. Does this version have a touchscreen? Yes. This specific V2.0 variant features a capacitive touch screen overlay, connected internally to IO21.

5. Are the header pins pre-soldered? Yes. This is the "Soldered Pin" version. The male header pins are already soldered to the board from the factory, making it instantly ready for breadboard use.

6. Can I power this board with a battery? Yes. The board includes a JST-GH 1.25mm 2-pin connector on the bottom designed for a standard 3.7V Lithium Polymer (LiPo) battery. A pigtail cable is included for this purpose.

7. How do I monitor the battery voltage? The battery voltage is internally routed to GPIO04 via a voltage divider. You can read the battery level directly in your software using an analog read command.

8. 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 the ESP-IDF framework.

9. What settings should I use in the Arduino IDE? Select the "ESP32S3 Dev Module". Ensure you set "USB CDC On Boot" to Enabled, Flash Size to 16MB, and PSRAM to OPI PSRAM. Check the specific LILYGO GitHub repository for any exact settings required for your batch.

10. How do I use the two small ports on the bottom? These are JST-SH 1.0mm 4-PIN connectors. The left one is wired for I2C (SDA IO03, SCL IO02), perfect for STEMMA QT/Qwiic sensors. The right one is wired for UART/Serial (TX IO43, RX IO44).

11. 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.

12. What do the physical buttons on the board do? There are two physical buttons on the bottom edge: a Reset button and a Boot button (IO00, used for entering flashing mode manually).

13. What is the small circular symbol on the front of the glass? That is a designated touch-sensitive area acting as a "Home" or "Action" button, distinct from the main display area.

14. What are the exact dimensions of the board? The board measures 55mm in length, 25mm in width, and 10mm in height.

15. Can I use an external Wi-Fi antenna? Yes. The board uses a 3D PCB antenna by default, but it features a tiny u.FL/IPEX connector on the back to attach a high-gain external antenna.

16. How do I switch to the external antenna? You must locate the tiny zero-ohm resistor near the antenna connector and physically desolder and move it to bridge the pads leading to the external connector.

17. What GUI libraries are recommended for this board? Because of its high resolution and AMOLED technology, this board is highly recommended for use with LVGL (Light and Versatile Graphics Library) or TFT_eSPI.

18. Which pins are used internally for the AMOLED display? The RM67162 display uses several internal pins including TFT_TE (IO09), TFT_CS (IO06), TFT_RES (IO17), TFT_CLK (IO47), and data pins D0-D3.

19. What does the "ENABLE PIN IO38" do? GPIO 38 is used as a power enable pin for the display/peripherals. You must pull this pin HIGH in your setup code to turn on the screen.

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.