USR_TTL-LAN Converter

A TTL UART to Ethernet (LAN) converter module that bridges serial microcontroller communication to a standard TCP/IP network — allowing any Arduino or embedded device to send and receive data over a wired Ethernet connection without a full networking stack.

🔹 Key Applications

• Wired Ethernet connectivity for microcontroller projects

• Sending sensor data to network servers over TCP/UDP

• Remote UART serial device access over LAN

• Industrial Ethernet-to-serial protocol conversion

• Networked device control without Wi-Fi dependency

• Reliable factory floor serial-to-LAN bridging

🔹 Why Choose This Module?

• TCP/IP bridge — full Ethernet networking from a UART interface

• Configurable TCP server or client mode — flexible network architecture

• RJ45 Ethernet connector — standard wired network integration

• 3.3 V TTL UART interface — compatible with most MCUs

• No complex networking code required — configure once via AT commands

🔹 Technical Specifications

• Interface: TTL UART ↔ Ethernet (RJ45)

• Network: TCP/IP (TCP server/client + UDP)

• UART Voltage: 3.3 V TTL

• Connector: RJ45 (10/100 Mbps)

• Configuration: AT commands via UART

🔹 What's Included

1 × TTL to LAN Ethernet Converter Module

🔹 Pro Tip

💡 Configure the module once via AT commands to set IP address, port, and operating mode (TCP server recommended for most applications). Once configured, it operates transparently — bytes in on UART come out as TCP packets, and vice versa. Ideal for reliable industrial environments where Wi-Fi is unreliable.

⚠️ Note: Always ensure proper heat dissipation and correct voltage configuration before powering connected devices.