• Compatible with Seeed Studio XIAO: Designed for Seeed Studio XIAO development boards.
• Long-Distance Communication: Supports RS-485 communication over distances of up to 1,200 m (approximately 3,937 ft).
• 5V or 12V DC Input: Supports either supply voltage, with an onboard circuit that converts 12V to 5V.
• Two 3-Pin Terminals: One terminal provides RS-485 connections (A, B, GND); The other provides power and interrupt connections (INT, 5V, 12V).
• Compact Design: Approximately the size of two XIAO boards, making it suitable for space-constrained projects.
• Selectable Direction Control: On V1.2, select hardware automatic or software-controlled direction by changing the onboard 0 Ω resistor configuration. Hardware automatic direction is the factory default.
• RX/TX Activity LEDs: Indicate data reception and transmission.
• 5V and 12V Power LEDs: Indicate the presence of the corresponding input voltage.

What is RS-485?

RS-485 is an efficient and reliable serial communication standard, suitable for various applications that require long-distance and multipoint connectivity. Its noise immunity and flexibility have made it widely used in industrial and communication sectors.

How does RS-485 work?

RS-485 uses a pair of signal lines (A and B) to transmit data, providing excellent noise immunity and supporting half-duplex communication modes. It allows for the connection of up to 32 devices on the same bus, with each device having a unique address for identification in sending and receiving data. This standard is widely used in industrial automation, remote monitoring, and other applications, and when combined with the Modbus protocol, it facilitates efficient data exchange and management between devices.

With the Seeed Studio RS-485 Breakout Board, you can harness the powerful capabilities of the Seeed Studio XIAO development boards and their extensive ecosystem to create projects that require reliable high-speed long distance communication. Whether you are developing industrial control systems or IoT devices, this breakout board offers a reliable and compact solution to integrate RS-485 functionality into your projects.

Learn more about it here.

All about RS485 - How RS485 Works and How to Implement RS485 into Industrial Control Systems? - Latest Open Tech From Seeed

1. Onboard

• Industrial Automation
• Remote Monitoring Systems
• Data Acquisition Systems
• Other Embedded Systems Requiring Serial Communication