Waveshare RP2350-ETH-8DI-8RO

Overview

The Waveshare RP2350-ETH-8DI-8RO is an industrial-grade programmable controller built around the Raspberry Pi RP2350B dual-architecture microcontroller. Housed in a DIN-rail mountable ABS enclosure (175 x 90 x 40mm), it is designed for real-world automation applications where reliability and electrical isolation are paramount.

The board features 8 relay output channels rated at up to 10A/250VAC (or 10A/30VDC) with 1NO+1NC contacts, and 8 optocoupler-isolated digital inputs accepting 5-36V signals in both passive and active configurations. Built-in protection includes power isolation, optocoupler isolation for all digital I/O, and TVS surge protection on communication lines.

Networking is handled by a WIZnet W5500 hardwired TCP/IP Ethernet controller providing 10/100Mbps wired connectivity, with an optional PoE variant (IEEE 802.3af). An isolated RS485 interface with selectable 120-ohm termination enables Modbus RTU communication with industrial sensors and PLCs. Additional features include a PCF85063A real-time clock with backup battery, microSD card slot, WS2812 RGB LED, and onboard buzzer. The wide 7-36V DC power input makes it suitable for industrial environments. Programming is supported via MicroPython, Arduino, and C/C++ Pico SDK.