T-ETH Lite

Overview

T-ETH Lite is an Ethernet-enabled development board based on ESP32 (16 MB Flash, 8 MB PSRAM). Features RTL8201 Ethernet controller, PoE expansion interface, TF card slot (SD_CS: IO5), and extensive GPIO resources (GPIO02–GPIO39) including ADC, DAC, and capacitive touch pins. Suitable for intelligent control, remote monitoring, and automation systems requiring high reliability, low latency, and multi-peripheral collaboration.

T-ETH Lite is the ESP32 version. For the ESP32-S3 version see T-ETH Lite S3.

Quick Start

Example Support

Example	PlatformIO/Arduino	ESP-IDF	Description
T-ETH-Series Examples	✓		Ethernet, LoRa, 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	ESP32 Dev Module
Upload Speed	921600
CPU Frequency	240 MHz (WiFi/BT)
Flash Frequency	80 MHz
Flash Mode	QIO
Flash Size	16MB (128Mb)
Partition Scheme	16M Flash (3MB APP/9.9MB FATFS)
PSRAM	Enable
Core Debug Level	None

4. Click Upload

Development Platforms

1. PlatformIO
2. Arduino IDE
3. ESP-IDF
4. MicroPython

Video

Key Features

• ESP32 dual-core LX6 @ 240 MHz, 16 MB Flash, 8 MB PSRAM, Wi-Fi + BT 5.0
• RTL8201 Ethernet, PoE expansion interface
• TF card slot, 2 × 15-pin IO expansion, 4 × 2 mm mounting holes
• Extensive GPIO: ADC, DAC, capacitive touch (TOUCH02–TOUCH09)

Product Parameters

Feature	Specification
MCU	ESP32 @ Dual-core LX6, 240 MHz
Flash	16 MB
PSRAM	8 MB
Wi-Fi	2.4 GHz 802.11 b/g/n
Bluetooth	Bluetooth 5.0 LE
Ethernet	RTL8201
PoE	Expansion interface
Storage	TF card (SD_CS: IO5)
USB	1 × Type-C
Expansion	2 × 15-pin IO, QWIIC
Buttons	BOOT + RESET
LED	Power/Link/ACT indicators
Mounting Holes	4 × 2 mm

Pin Diagram

Dimension Diagram

Schematic

• T-ETH-Lite (ESP32) Schematic

Datasheet

• DP9900M PoE
• DP5300 PoE

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.

Version History

Version	Release Date	Update Description
T-ETH Lite V1.0	—	Initial version (ESP32)