T-ETH Elite

Overview

T-ETH Elite is a high-performance IoT development board based on ESP32-S3R8 (16 MB Flash, 8 MB PSRAM). Integrates W5500 Ethernet controller and PoE (IEEE 802.3af Class 0, 36–57 V), 40-PIN GPIO (Raspberry Pi compatible), TF card slot (SPI), USB OTG (Type-C), and UART. Supports hybrid wired/wireless networking (Wi-Fi + BT + Ethernet). Stackable with expansion boards: LoRa gateway (SX1302), LoRa end node, and LTE modules. 50 × 67 × 17 mm.

Quick Start

Example Support

Example	PlatformIO/Arduino	ESP-IDF	Description
T-ETH-Series Examples	✓		Ethernet, LoRa gateway, LTE examples

PlatformIO

1. Install Visual Studio Code and Python
2. Search for and install the PlatformIO IDE extension in VS Code
3. Clone the LilyGO-T-ETH-Series repository
4. Open platformio.ini and uncomment the desired example
5. Click ✓ to compile, click → to upload

Arduino

1. Install Arduino IDE
2. Add ESP32 boards URL: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
3. In Tools → Board, configure:

Arduino IDE Setting	Value
Board	ESP32S3 Dev Module
Upload Speed	921600
USB Mode	Hardware CDC and JTAG
USB CDC On Boot	Disabled
USB Firmware MSC On Boot	Disabled
USB DFU On Boot	Disabled
CPU Frequency	240 MHz (WiFi)
Flash Mode	QIO 80 MHz
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

4. Click Upload

Development Platforms

1. PlatformIO
2. Arduino IDE
3. MicroPython

Video

Key Features

• ESP32-S3R8 dual-core LX7 @ 240 MHz, 16 MB Flash, 8 MB PSRAM, Wi-Fi + BT 5.0
• W5500 Ethernet + PoE (IEEE 802.3af Class 0, 36–57 V input)
• 40-PIN GPIO (Raspberry Pi compatible layout)
• Stackable expansion: LoRa gateway (SX1302/SX1262/SX1276), LoRa end node, LTE (4G/5G)
• TF card (SPI), USB OTG, 50 × 67 × 17 mm, 4 × M2.5 mounting holes

Product Parameters

Feature	Specification
MCU	ESP32-S3R8 @ Dual-core LX7, 240 MHz
Flash	16 MB
PSRAM	8 MB (Octal SPI)
Wi-Fi	2.4 GHz 802.11 b/g/n
Bluetooth	Bluetooth 5.0 LE
Ethernet	W5500 (TCP/UDP/IPv4)
PoE	IEEE 802.3af Class 0, 36–57 V
GPIO	40-PIN (Raspberry Pi compatible)
Storage	TF card slot (SPI)
USB	1 × Type-C (USB + OTG)
Buttons	RESET + BOOT + OTG switch + IO38
Mounting Holes	4 × M2.5
Dimensions	50 × 67 × 17 mm

Pin Diagram

Dimension Diagram

Schematic

• T-ETH-Elite Schematic

Datasheet

• ESP32-S3 Datasheet

Software Development

• LilyGO-T-ETH-Series GitHub Repository

Dependent Libraries

• Adafruit_BME280_Library
• Adafruit_NeoPixel
• ETHClass2
• LoRa
• RadioLib
• TFT_eSPI
• TinyGPSPlus
• TinyGSM
• U8g2

FAQ

• Q. Why does my board keep failing to upload programs? A. Hold down the BOOT button and try uploading again.

• Q. What is the PoE input voltage range? A. IEEE 802.3af Class 0, 36–57 V. Use a PoE-capable switch or injector.

• Q. How do I configure the LoRa gateway? A. Connect to the ESP32 hotspot (SSID: LilyGo-Gateway, password: 12345678), open 192.168.4.1, configure the frequency plan, NS host (e.g., TTN), and gateway ID, then click Apply and Restart.

Version History

Version	Release Date	Update Description
T-ETH Elite V1.0	—	Initial version