Description
LILYGO T-Display S3 ESP32-S3R8 1.9″ LCD Development Board – 16MB Flash, 8MB PSRAM, Non-Touch, Non-Soldered
The LILYGO T-Display S3 is a compact ESP32-S3 development board built around the ESP32-S3R8 and an integrated 1.9-inch ST7789 IPS LCD. It combines processing, wireless connectivity and a color display on one compact board, making it suitable for embedded user interfaces, IoT dashboards, monitoring systems, portable instruments and rapid prototyping.
This Micro Ohm version is the Basic Non-Touch and Non-Soldered version. The GPIO pin headers are supplied separately and are not soldered to the board.

Key Features
- ESP32-S3R8 dual-core LX7 microcontroller.
- 16MB Flash memory.
- 8MB PSRAM.
- Built-in 1.9-inch ST7789 IPS color LCD.
- 170 × 320 pixel display resolution.
- 8-bit parallel I8080 LCD interface.
- Wi-Fi connectivity.
- Bluetooth Low Energy 5 and Bluetooth Mesh support.
- USB Type-C for programming and communication.
- BOOT, RESET and programmable IO14 buttons.
- Battery voltage monitoring through GPIO4.
- STEMMA QT / Qwiic compatible interface.
- JST battery connector.
- Compact development-board format for portable and embedded projects.
Technical Specifications
| Brand | LILYGO |
| Model | T-Display S3 |
| Version | Basic / Non-Touch / Non-Soldered |
| MCU | ESP32-S3R8 Dual-Core LX7 |
| Flash | 16MB |
| PSRAM | 8MB |
| Display | 1.9-inch IPS LCD |
| LCD Controller | ST7789 / ST7789V |
| Resolution | 170 × 320 pixels |
| LCD Interface | 8-bit Parallel I8080 |
| Wireless | Wi-Fi + BLE 5 + Bluetooth Mesh |
| Logic Voltage | 3.3V |
| USB | USB Type-C |
| Programming | Arduino IDE, PlatformIO, MicroPython |
Display & GPIO Pinout
The integrated ST7789 LCD uses an 8-bit parallel data interface. The board also exposes GPIO, ADC, UART and I2C connections for sensors, controls and external modules.
- LCD Backlight: GPIO38
- LCD Power Enable: GPIO15
- LCD Reset: GPIO5
- LCD CS: GPIO6
- LCD DC: GPIO7
- LCD WR: GPIO8
- LCD RD: GPIO9
- LCD Data Bus: GPIO39, GPIO40, GPIO41, GPIO42, GPIO45, GPIO46, GPIO47 and GPIO48
- BOOT: GPIO0
- Programmable Button: GPIO14
- Battery Voltage Detection: GPIO4
- I2C / Qwiic: SDA GPIO18, SCL GPIO17
- UART: TX GPIO43, RX GPIO44

Applications
- IoT dashboards and control panels.
- Portable monitoring devices.
- Sensor data displays.
- Wireless control interfaces.
- Embedded graphical interfaces.
- Home automation projects.
- ESP32-S3 learning and development.
- Rapid prototyping.
What Is Included
- 1 × LILYGO T-Display S3 Basic board.
- Unsoldered pin headers.
- 1 × JST battery lead.
Important Version Notes
- This product is NOT the Touch version.
- The pin headers are NOT soldered to the board.
- The product uses the ESP32-S3R8 configuration with 16MB Flash and 8MB PSRAM.
- The display controller is ST7789 / ST7789V with 170 × 320 resolution.
- Use 3.3V logic when interfacing directly with ESP32-S3 GPIO.
Official Documentation
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