Description

ESP32 Ethernet Development Board (LN7820 + CH340C) – Product Description

The ESP32 Ethernet Development Board combines the power of Espressif’s ESP32 module with the stability and speed of wired Ethernet via the LN7820 MAC/PHY chip. Designed for IoT developers who need reliable network connectivity, this board offers the best of both worlds—high-performance Wi-Fi/Bluetooth and robust Ethernet networking.

Featuring onboard USB-to-UART (CH340C), a USB-C connector, reset and boot buttons, clear pin labeling, and a compact, mounting-ready PCB, this board is ideal for rapid prototyping, automation systems, smart home gateways, industrial sensors, and network-connected embedded devices.

Whether you’re building secure LAN-connected applications or need consistent low-latency communication beyond Wi-Fi, this board provides a powerful, flexible, and developer-friendly platform.

Features

Core Module

• ESP32-WROOM-32E module (dual-core Xtensa MCU)

• Integrated Wi-Fi 802.11 b/g/n + Bluetooth 4.2 BLE

• Up to 520 KB SRAM and 4 MB Flash (module dependent)

Ethernet Connectivity

• LN7820 Ethernet PHY / controller for stable wired networking

• Standard RJ45 connector with integrated magnetics

• Ideal for high-reliability or low-latency applications

• Supports common TCP/IP stacks and ESP32 Ethernet libraries

USB Interface

• CH340C USB-to-UART for programming and debugging

• USB Type-B Female connector for Rugged power and data

• Plug-and-play driver support for major operating systems

I/O & Expansion

• Clearly labeled pin headers for GPIO, UART, SPI, I²C, ADC, etc.

• 3.3 V power rail available on headers

• Suitable for add-on circuits, sensors, and custom modules

Onboard Hardware

• BOOT and RESET buttons

• Power regulation and protection circuitry

• Status LEDs for power/activity

• Compact board design with mounting holes

Power

• Powered via USB-C

• Onboard 3.3V regulators

• Supports external 5V input (depending on your design)

Software Compatibility

• Works with:

  • ESP-IDF

  • Arduino IDE

  • PlatformIO

  • MicroPython

• Full Ethernet support via ESP-IDF drivers

• CH340C compatible with Windows / macOS / Linux

Ideal For

• Wired IoT gateways

• Smart home hubs

• Industrial automation and controllers

• LAN-connected sensors

• Low-latency ESP32 applications

• Network bridges, proxies, and servers