T4-S3 get it now

Overview

LILYGO T4-S3 is a compact development board based on the ESP32-S3R8 dual-core LX7 microcontroller featuring a vibrant 2.41-inch SPI RGB AMOLED touchscreen (600 × 450, 800 cd/m²). It integrates Wi-Fi 2.4 GHz and Bluetooth 5.0 (LE), 16 MB Flash, 8 MB PSRAM, a MicroSD card slot, and battery management via a JST-GH 1.25 mm connector. Two Qwiic (JST-SH 1.0 mm) ports and a 30-pin 1.27 mm-pitch header expose available GPIOs and power pins. Suitable for smart-display projects, wearable prototyping, and compact IoT applications.

Quick Start

Example Support

Example	PlatformIO/Arduino	ESP-IDF	Description
LilyGo-AMOLED-Series	✓	✓	AMOLED display, touch, TF card examples

PlatformIO

1. Install Visual Studio Code and Python
2. Search for and install the PlatformIO IDE extension in VS Code
3. Open the LilyGo-AMOLED-Series project folder
4. Open platformio.ini and select the T4-S3 environment
5. Click ✓ to compile, connect via USB-C, click → to upload

Arduino

1. Install Arduino IDE
2. Install Arduino ESP32
3. In Tools → Board, configure:

Arduino IDE Setting	Value
Board	ESP32S3 Dev Module
Port	Your port
USB CDC On Boot	Enable
CPU Frequency	240 MHz (WiFi)
Flash Mode	QIO 80 MHz
Flash Size	16MB (128Mb)
PSRAM	OPI PSRAM
Partition Scheme	16M Flash (3MB APP/9.9MB FATFS)
Upload Mode	UART0/Hardware CDC
Upload Speed	921600
USB Mode	CDC and JTAG

4. Click Upload

Note: GPIO18 is assigned to the AMOLED display TE pin — do not use it for other purposes.

Development Platforms

1. Arduino IDE
2. PlatformIO
3. ESP-IDF
4. MicroPython

Related Videos

Key Features

• ESP32-S3R8 dual-core LX7 @ 240 MHz, Wi-Fi 2.4 GHz + Bluetooth 5.0 (LE)
• 2.41-inch SPI RGB AMOLED touchscreen, 600 × 450 resolution, 800 cd/m²
• 16 MB Flash + 8 MB PSRAM
• MicroSD card slot
• Battery charging via JST-GH 1.25 mm connector
• 2 × Qwiic (JST-SH 1.0 mm) I2C expansion ports
• 30-pin 1.27 mm-pitch GPIO header
• USB-C programming and power

Specifications

Parameter	Value
SOC	ESP32-S3R8, Dual-core LX7 @ 240 MHz
Flash	16 MB
PSRAM	8 MB
Wireless	Wi-Fi 2.4 GHz 802.11 b/g/n, Bluetooth 5.0 (LE)
Display	2.41-inch AMOLED, 600 × 450, SPI, capacitive touch
Storage	MicroSD card slot
USB	1 × USB-C
Expansion	2 × Qwiic (JST-SH 1.0 mm), 30-pin 1.27 mm header
Battery	JST-GH 1.25 mm, 3.7 V Li-Po
Weight
Package size

Pin Diagram

Pinout Diagram

Dimensions

Schematic

• LilyGo-AMOLED-Series Schematics

Datasheet

• ESP32-S3 Datasheet

Software Libraries

• LilyGo-AMOLED-Series GitHub Repository

Dependent Libraries

• TFT_eSPI
• LVGL
• Arduino_GFX

FAQ

• Q. Why is GPIO18 not available? A. GPIO18 is connected to the AMOLED display TE (tearing effect) pin internally. Using it for other purposes may cause display artifacts.

• Q. Upload fails? A. Hold BOOT, press and release RST, then click Upload.

Changelog

Version	Date	Notes
V1.0	2023-12	Initial release