Communication
Boardoza RS485 5V Transceiver Breakout Board
The Boardoza RS485 5V Transceiver Breakout Board is a robust long-distance communication interface built around the HTC Korea MAX485 RS-485 transceiver. Designed for 5V systems, this board enables stable half-duplex differential communication, making it ideal for electrically noisy environments and extended cable runs. With its stable, high-speed, and interference-resistant communication capabilities, this module is perfectly suited for industrial automation, sensor networks, CNC systems, building management, and microcontroller-based communication projects.
Where to buy?
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Key Features
- Maker-Ready RS-485 Communication: Easily add long-range wired communication to Arduino, ESP8266, ESP32, STM32, Raspberry Pi, and more.
- MAX485 Transceiver from HTC Korea: Industry-standard +5V differential driver/receiver for reliable RS-485 networks.
- Stable Half-Duplex Operation: Perfect for multi-node communication, sensor buses, and distributed control systems.
- High Noise Immunity: Differential signaling ensures reliable operation even in environments with motors, relays, and EMI sources.
- Beginner-Friendly Wiring: Screw terminals and header pins allow fast prototyping and permanent installations.
- 5V Logic Compatibility: Ideal for classic microcontrollers such as Arduino UNO, Mega, and many industrial controllers.
- High-Speed Data Support: Supports up to 10 Mbps communication speed for demanding applications.
Technical Specifications
- Manufacturer
- HTC Korea
- Model
- MAX485
- Input Voltage
- 5V
- Voltage Input Type
- Screw terminal / 4-pin header
- Interface
- RS-485 (Half-Duplex)
- Logic Level
- 5V
- Data Rate
- Up to 10 Mbps
- Receiver Input Range
- ±7V
- Functions
- RS-485 Transceiver Module
- Operating Temperature
- –20°C ~ +85°C
- Board Dimensions
- 40mm × 40mm
Board Pinout
( J1 ) Input Connector
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | TXD | Module TXD Pin |
| 3 | RXD | Module RXD Pin |
| 4 | VCC | Power Input (5V) |
( J2 ) Input Connector
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | TXD | Module TXD Pin |
| 3 | RXD | Module RXD Pin |
| 4 | VCC | Power Input (5V) |
( J3 ) RS-485 Connector
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | COM | Common Ground |
| 2 | B | Inverting Driver/Receiver Line |
| 3 | A | Non-Inverting Driver/Receiver Line |
( J4 ) RS-485 Connector
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | COM | Common Ground |
| 2 | B | Inverting Driver/Receiver Line |
| 3 | A | Non-Inverting Driver/Receiver Line |
Datasheet
Download (PDF)Support
For technical questions, documentation and issue reports, use the GitHub repository or write to us directly.