RS485 to TTL Converter Module

The RS485 to TTL Converter Module is designed to facilitate serial communication between TTL-based microcontrollers (like Arduino, STM32, ESP32, or Raspberry Pi) and devices using the RS485 communication standard. Based on an RS485 transceiver IC such as the MAX485 or equivalent, the module converts single-ended TTL signals to differential RS485 signals, allowing stable data transmission over long distances (up to 1200 meters).

The module supports half-duplex communication, meaning the same pair of wires is used for transmitting and receiving data. It includes transceiver direction control pins (DE/RE) that can be managed automatically by software or manually through microcontroller GPIO pins.

Built-in TX and RX indicator LEDs provide real-time visual feedback of data transmission and reception, helping users debug communication systems effectively. The module can operate at both 3.3V and 5V logic levels, ensuring compatibility with most embedded systems.

It is commonly used in industrial automation, sensor networks, smart metering, and other serial data communication applications requiring long cable runs and noise-resistant signaling.