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An Arduino-Compatible Relay Controller for RS-485 Networks

An Arduino-Compatible Relay Controller for RS-485 Networks

This project brief describes how to build and use an Arduino-compatible relay interface board that switches a 10 A load over an RS-485 network.

Projects Sep 16, 2026 by Rajkumar Sharma, All About Circuits
A Four-Channel RS-422 Differential Line Receiver Module

A Four-Channel RS-422 Differential Line Receiver Module

This project brief describes how to build and use a four-channel differential line receiver module for balanced RS-422 and RS-485 data links.

Projects Jul 08, 2026 by Rajkumar Sharma, All About Circuits
A Four-Channel RS-422 Differential Line Driver Module

A Four-Channel RS-422 Differential Line Driver Module

This project brief describes how to implement a four-channel differential line driver module for reliable long-distance data transmission over balanced twisted-pair lines.

Projects Jul 01, 2026 by Rajkumar Sharma, All About Circuits