The LILYGO T3 S3 is a high-performance ESP32-S3 development board designed for IoT, wireless communication, and embedded system applications. Equipped with Wi-Fi 2.4GHz, Bluetooth 5.0 (BLE), and LoRa compatibility, this board is ideal for low-power, long-range data transmission. Additionally, the 0.96-inch SSD1306 OLED display enhances real-time data visualization, making it perfect for various IoT and smart device applications.

Key Features of LILYGO T3 S3

1. ESP32-S3 Microcontroller for High Performance

• MCU: ESP32-S3 dual-core processor with high computing power.
• Memory: 4MB Flash + 2MB PSRAM, ensuring smooth operation for complex applications.
• Wireless Connectivity: Wi-Fi 2.4GHz and Bluetooth 5.0 (BLE) for seamless communication.

2. 0.96-Inch SSD1306 I2C OLED Display

• Resolution: 128 × 64 pixels, providing sharp, high-contrast visuals.
• I2C Interface: SDA – IO18, SCL – IO17, making it compatible with various microcontrollers.

3. LoRa Communication with Multiple Frequency Options

The LILYGO T3 S3 supports multiple LoRa transceiver modules, making it suitable for different regions and use cases:

• SX1280: 2.4GHz LoRa, +12dBm PA, 9.9mA RX power consumption.
• SX1276: 868/915MHz LoRa, +14dBm PA, 9.9mA RX power consumption.
• SX1262: 868/915MHz LoRa, featuring +22dBm/+15dBm PA and ultra-low 4.6mA RX power consumption, ideal for long-range, energy-efficient IoT applications.

4. Versatile Hardware & Power Management

• Power Supply Options: Supports USB power and 3.7V lithium battery with a built-in power switch.
• Expandable Storage: TF card slot for additional data logging and storage.
• User-Friendly Design: Includes reset & BOOT buttons and switchable internal/external antennas for better signal reception.

⚠️Cautions⚠️
When using the “SX1280 2.4G With PA [H658]“, it is recommended that the software control 1280 chip output 2 to 5 dbm, so that the entire module will output 20 dbm of power; When the output of the 1280 chip is higher than 2 dbm, the output power of the entire module is only 20 dbm; When the output of 1280 chip is higher than 5 dbm, the output power of the entire module is only 20 dbm, but if 5 dbm is given to the FEM, it will damage the FEM chip (the maximum allowable input for the FEM is 5 dbm) If the output of the 1280 chip is lower than 2 dbm, the output power of the entire module is within 20 dbm. The output power setting of the SX1280 cannot be greater than 2-5dbm, otherwise, damage to the FEM chip may occur. Set 3dBM to have an output power of 20dmb.

Sample code for reference [Github]

T3 S3

Pin Diagram