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TranslateLILYGO T3S3
Introduction
The T3S3 (LILYGO T3-S3 V1.2) is a development board based on the ESP32-S3, featuring multi-band LoRa communication via optional SX1262/76 (868/915 MHz) or SX1280 (2.4 GHz) modules. It includes a 128×64 OLED display (SSD1306) and a MicroSD card slot for data visualization and storage. The board supports power and firmware flashing via USB Type-C, and offers rich interfaces such as ADC (GPIO15/16), UART (U0RTS/U0CTS), and a PSP bus (GPIO33–37), along with BOOT/RST buttons and clearly labeled GPIO pins like GPIO12, 48, and 47. It is well-suited for low-power IoT applications such as sensor networks and environmental monitoring.
Appearance and function introduction
Appearance
Pinmap
Module Information and Specifications
Description
| Component | Description |
|---|---|
| MCU | ESP32-S3FH4R2 |
| FLASH | 4MB(Quad-SPI) |
| PSRAM | 2MB(Quad-SPI) |
| LoRa | SX1262:433/868/915 MHZ < br > SX1276:868/915 mhzsx1280:2.4 Ghz |
| Screen | 0.96-inch SSD1306 OLED screen |
| Storage | TF Card |
| Wireless | 2.4Ghz Wi-Fi + Bluetooth 5.0 |
| USB | 1 × USB Port and OTG(TYPE-C interface) |
| IO interface | 2.54mm pitch × 2*13 extended IO interface |
| Keys | 1 x RESET key + 1 x BOOT key |
| Extended Interfaces | 1 x LoRa antenna interface + 1 x Battery interface + 2 x Qwiic interface |
| Power Supply | 5V/500mA |
| Hole Position | 2mm positioning holes 2 ** |
| Dimensions | 66x36x14mm |
Related Links
Github:T3S3
Schematic Diagram
Dependency Libraries
Software Design
Arduino Set Parameters
| T3S3 | Value |
|---|---|
| Board | ESP32S3 Dev Module |
| Port | Your port |
| USB CDC On Boot | Enable |
| CPU Frequency | 240MHZ(WiFi) |
| Core Debug Level | None |
| USB DFU On Boot | Disable |
| Erase All Flash Before Sketch Upload | Disable |
| Events Run On | Core1 |
| Flash Mode | QIO 80MHZ |
| Flash Size | 4MB(32Mb) |
| Arduino Runs On | Core1 |
| USB Firmware MSC On Boot | Disable |
| Partition Scheme | Default 4M Flash with spiffs(1.2M APP/1.5MB SPIFFS) |
| PSRAM | QSPI PSRAM |
| Upload Mode | UART0/Hardware CDC |
| Upload Speed | 921600 |
| USB Mode | CDC and JTAG |
| Programmer | Esptool |