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TranslateLILYGO T3-S3 LR1121
Introduction
LILYGO T3-S3 LR1121 is a highly integrated IoT development board based on the ESP32-S3, supporting dual-band LoRa communication at 2.4GHz and 830â945MHz, enabling long-range transmission (10km+) and compatibility with spectrum regulations across various regions.
The board features a 1.3-inch OLED display for real-time data monitoring, a TF card slot for storage expansion, and a Type-C port for convenient power supply and debugging. It offers abundant GPIO pins supporting ADC, SPI, I2C, and other protocols, allowing flexible connection to sensors and peripherals.
With built-in Wi-Fi and Bluetooth 5.0, the T3-S3 LR1121 enables seamless multi-protocol communication. It's ideal for applications such as smart agriculture monitoring, industrial device management, emergency communication networks, and smart home gateways. Its low-power design and compact form factor make it an efficient and versatile hardware platform for rapid IoT system development.
Appearance and function introduction
Appearance
Pinmap
Module Information and Specifications
Description
| Component | Description |
|---|---|
| MCU | ESP32S3FH4R2 |
| FLASH | 4MB |
| PSRAM | 2MB |
| RTC | PCF85063ATL (IIC) |
| LoRa | 830~945Mhz 2.4Ghz |
| Storage | TF card |
| wireless | 2.4Ghz Wi-Fi + Bluetooth 5.0 |
| USB | 1 Ã USB Port and OTG(TYPE-C Interface) |
| IO interface | 2.54mm spacing à 2*20 (double row) extension IO interface |
| buttons | 1 x RESET button + 1 x BOOT button |
| Extension interface | 2 Ã QWIIC interface |
| Display | 0.96 inch 1306 OLED |
| Battery interface | 1.25mm interface |
| Power | 5V/500mA |
| Holes | 2mm location hole *2 |
| Dimensions | 66x27x15mm |
Related Links
Github:T3-S3 LR1121
Schematic Diagram
Dependency Libraries
Software Design
Arduino Set Parameters
| T3-S3 V.1x | 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 | Huge APP (3MB No OTA/1MB SPIFFS) |
| PSRAM | QSPI PSRAM |
| Upload Mode | UART0/Hardware CDC |
| Upload Speed | 921600 |
| USB Mode | CDC and JTAG |
| Programmer | Esptool |