LILYGO T-Mini E paper S3
Introduction
The LILYGO T-MINI E-Paper S3 Kit is a compact (102x24.5x53 mm) multifunctional development board powered by the ESP32-S3FN4R2 dual-core processor with Wi-Fi and Bluetooth 5 support.
Its core highlight is the integration of a low-power 1.02-inch e-paper display (128x80 resolution), the SX1262 LoRa long-range communication module supporting 868/915/923 MHz frequency bands, and 3.7V 18350 lithium battery power supply.
Onboard features include TF card storage expansion, a PCF85063ATL RTC real-time clock, rich GPIO interfaces (SPI/I2C, etc.), and deep-sleep mode support.
It is ideal for building remote environmental monitoring nodes, low-power information display tags, portable data loggers, and other IoT application scenarios.
Appearance and Functions
Appearance

Pin Diagram

Module Information and Specifications
Development Board Specifications

Component | Description |
---|---|
MCU | ESP32-S3FN4R2 Dual-core LX7 microprocessor |
Flash | 4MB |
PSRAM | 2MB |
LoRa | SX1262 868MHz / 915MHz / 923MHz (optional) |
RTC | PCF85063ATL |
Wireless | 2.4 GHz Wi-Fi & Bluetooth 5 (LE) |
Storage | TF card |
Display | 1.02-inch e-paper, 128x80 resolution |
Battery | 18350 3.7V lithium battery |
Buttons | 1 × RST button + 1 × BOOT button |
USB | 1 × Type-C port |
Expansion Ports | 1 × LoRa antenna port + 1 × QWIIC port |
Dimensions | 102 × 24.5 × 53 mm |
Mounting Holes | M1 × 4 |
Related Resources
GitHub: LilyGO-Mini-Epaper-S3
Schematics
Dependencies
- AceButton
- RadioLib
- adafruit_NeoPixel
- arduino_json
- Adafruit_GFX_Library
- BMA423
- GxEPD
- Mecha_QMC5883L-master
- PCF8563_library
- QMC5883LCompass
Software Development
Arduino IDE Settings
Arduino IDE Setting | Value |
---|---|
Board | ESP32S3 Dev Module |
Port | Your port |
USB CDC On Boot | Enable |
CPU Frequency | 240 MHz (Wi-Fi) |
Core Debug Level | None |
USB DFU On Boot | Disable |
Erase All Flash Before Sketch Upload | Disable |
Events Run On | Core 1 |
Flash Mode | QIO 80 MHz |
Flash Size | 4MB (32Mb) |
Arduino Runs On | Core 1 |
USB Firmware MSC On Boot | Disable |
Partition Scheme | Default 4MB with SPIFFS (1.5MB APP / 1.5MB SPIFFS) |
PSRAM | QSPI PSRAM |
Upload Mode | UART0 / Hardware CDC |
Upload Speed | 921600 |
USB Mode | CDC and JTAG |