LILYGO T-Display S3 Pro LR1121

  • ESP32-S3
  • AMOLED
  • LoRa
  • LR1121

T-Display-S3-Pro-LR1121

Version History:

Version Update Date Update Description
T-Display-S3-Pro-LR1121_V1.0 2024-01-01 Initial Version
Product SOC FLASH PSRAM Link
T-Display S3 Pro LR1121 ESP32-S3 16M 8M (Octal SPI) LILYGO Mall

Table of Contents

Description

T-Display S3 Pro LR1121 is a highly integrated development board based on the ESP32-S3 microcontroller, focusing on multi-functionality and high performance. Its core features 16MB Flash and 8MB PSRAM, supporting complex application operations. Equipped with a 1.91-inch AMOLED display with touch support. Built-in PMU (Power Management Unit) and RTC (Real-Time Clock), combined with VBUS power management, optimize low-power design. For expansion, it provides dual STEMMA QT/Qwlic interfaces, compatible with quick sensor connections; supports SD card storage, and reserves rich GPIO, ADC channels, and UART communication interfaces for peripheral expansion. Additionally, onboard LoRa (LR1121) module supports multi-band communication. This product is suitable for smart wearables, IoT terminals, and other scenarios requiring display interaction and multi-sensor integration.

Preview

Physical Images

T-Display-S3-Pro-LR1121

Pinout Diagram

summary

Modules

1. MCU

2. Screen

  • Size: 1.91-inch AMOLED
  • Resolution: To be added
  • Type: IPS AMOLED
  • Driver IC: RM67162
  • Compatible Libraries: TFT_eSPI, Arduino_GFX
  • Bus Protocol: SPI/QSPI

Overview

Component Description
MCU ESP32-S3R8 Dual-core LX7 microprocessor
FLASH 16MB
PSRAM 8MB
Screen 1.91-inch RM67162 IPS AMOLED
Touch Capacitive Touch Screen
LoRa LR1121 (1276/868/915MHz)
Storage TF Card
RTC PCF85063ATL/1
Power Management AXPM65611 + BQ25896
Wireless 2.4 GHz Wi-Fi & Bluetooth 5 (LE)
USB 1 × USB Port and OTG (TYPE-C Interface)
IO Interface 2×13 dual-row expansion interface
Expansion Interfaces FPC antenna + TF Card + STEMMA QT/QWIIC + JST-GH 1.25MM
Buttons 1 x RESET button + 1 x BOOT button
Mounting Holes 4 × 2mm positioning holes
Dimensions 60×32×12mm

Quick Start

Example Support

Example PlatformIO/Arduino ESP-IDF Description
Factory ✓ Factory Example
(More examples available in GitHub repository)

PlatformIO

  1. Install Visual Studio Code according to your system.
  2. Open the "Extensions" sidebar in Visual Studio Code (or press Ctrl+Shift+X), search for the "PlatformIO IDE" extension and install it.
  3. While the extension is installing, download the project from GitHub. You can click the green "<> Code" button to download the main branch, or download a "Releases" version from the sidebar.
  4. After the extension installation is complete, open the Explorer sidebar (or press Ctrl+Shift+E), click "Open Folder", find the project code you just downloaded (the entire folder), click "Add", and the project files will be added to your workspace.
  5. Open the "platformio.ini" file in the project folder (PlatformIO should automatically open it after adding the folder). Under the "[platformio]" section, uncomment the line selecting the example program you want to upload (starting with "default_envs = xxx"). Then click the "√" at the bottom left to compile. If the compilation is successful, connect the board to your computer and click the "→" at the bottom left to upload.

Arduino

  1. Install Arduino IDE according to your system.
  2. Open the "example" directory in the project folder, select the example project folder, and open the file ending with ".ino" to open the Arduino IDE project workspace.
  3. Open the "Tools" menu -> "Board" -> "Boards Manager", find or search for "esp32", and install the board files by "Espressif Systems". Then return to the "Board" menu and select the board type under "ESP32 Arduino". The board type to choose is determined by the "board = xxx" header in the "[env]" section of the "platformio.ini" file. If the corresponding board is not available, you need to manually add the board from the "board" directory in the project folder.
  4. Open the "[File]" -> "[Preferences]" menu, find the "[Sketchbook location]" field. Copy and paste all library files and folders from the "libraries" directory in the project folder into the "libraries" folder at this location.
  5. Select the correct settings in the "Tools" menu as shown in the table below.

ESP32-S3

Setting Value
Board ESP32S3 Dev Module
Upload Speed 921600
USB Mode Hardware CDC and JTAG
USB CDC On Boot Enabled
USB Firmware MSC On Boot Disabled
USB DFU On Boot Disabled
CPU Frequency 240MHz (WiFi)
Flash Mode QIO 80MHz
Flash Size 16MB (128Mb)
Core Debug Level None
Partition Scheme 16M Flash (3MB APP/9.9MB FATFS)
PSRAM OPI PSRAM
Arduino Runs On Core 1
Events Run On Core 1
  1. Select the correct port.
  2. Click the "√" in the top right corner to compile. If the compilation is successful, connect the board to your computer and click the "→" to upload.

Development Platforms

  1. Micropython
  2. Arduino IDE
  3. Platform IO

(Power consumption and other test data to be added)

FAQ

  • Q. I still don't know how to set up the programming environment after reading the above tutorial. What should I do?
    A. If you still don't understand how to set up the environment after reading the above tutorial, you can refer to the LilyGo-Document documentation for setup instructions.

  • Q. Why does my board keep failing to upload programs?
    A. Please hold down the "BOOT" button, then press the "RST" button once, and then click upload to enter download mode.

  • Q. Which frequency bands does the LR1121 LoRa module support?
    A. The LR1121 module supports multiple frequency bands including 1276MHz, 868MHz, and 915MHz. Please select the appropriate frequency band according to regulations in your region.

  • Q. How to connect external sensors?
    A. You can quickly connect compatible sensor modules through the onboard STEMMA QT/QWIIC interfaces, or connect other peripherals through the 2×13 dual-row expansion interface.

Projects

Resources

Dependent Libraries