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TTL to RS485 Converter 3.3V/5.0V Hardware Automatic Control Converter Module for Arduino AVR
Transform your Arduino or AVR microcontroller into a powerful RS485 communication hub with our high‑performance TTL to RS485 converter. Designed for both 3.3V and 5.0V logic levels, this compact module automatically detects the input voltage and switches to the appropriate RS485 driver, ensuring seamless integration with a wide range of industrial and home automation projects.
Key Highlights
- Dual‑voltage support: 3.3V & 5.0V TTL input with automatic level detection
- Robust RS485 transceiver: 120Ω differential output, high noise immunity
- Compact 3.3×2.4cm footprint, ideal for breadboard or PCB mounting
- Easy Arduino AVR integration: 6-pin header (VCC, GND, TX, RX, DE, RE)
- Wide operating voltage: 3.0V–5.5V, 5V supply recommended for best performance
- Low power consumption: < 1mA idle current, < 5mA during transmission
- Built‑in protection: ESD, reverse polarity, and over‑voltage protection
- Long‑range communication: up to 1200m on twisted‑pair cable (standard RS485)
Why Choose This Converter?
Whether you’re building a sensor network, remote monitoring system, or industrial automation solution, this converter delivers reliable, high‑speed data transfer while protecting your Arduino from voltage spikes. Its automatic control feature eliminates manual configuration, saving time and reducing the risk of errors.
Installation & Setup
1. Connect the module to your Arduino AVR using the 6‑pin header.
2. Power the module with 3.3V or 5.0V from the Arduino.
3. Set the DE (Driver Enable) and RE (Receiver Enable) pins in your code to manage transmit/receive modes.
4. Use the standard Serial library over the RS485 bus or a dedicated RS485 library for multi‑node networks.
5. Enjoy robust, long‑distance communication with minimal setup.
Compatibility
• Arduino Uno, Mega, Nano, Leonardo, Due, and any AVR‑based board
• STM32, ESP32, Raspberry Pi (via UART)
• Industrial PLCs and Modbus RTU devices
• Any RS485 network requiring a TTL interface
Specifications
• Input Voltage: 3.3V / 5.0V TTL
• Output Voltage: 120Ω differential (RS485)
• Max Data Rate: 115200 bps (standard)
• Operating Temperature: –40 °C to +85 °C
• Dimensions: 3.3 cm × 2.4 cm × 0.5 cm
• Package: 6‑pin header + PCB
Upgrade your Arduino projects with our TTL to RS485 Converter and unlock the full potential of industrial‑grade serial communication.
Price: $ 1.59