Arduino Relay Driver Shield Circuit Diagram: In this 3-Channel Relay Driver Circuit, we have used an optocoupler to trigger the NPN transistor which further drives the relay. And optocoupler will be ...

Working and Demonstration: For demonstrating the working of this Relay Module, we have used an Arduino Uno board for controlling relays. All four relays are connected with Arduino at 8,9,10 and 11th ...

This IR motion sensor relay switch circuit is designed for use with all kinds of medium-power automobile/domestic 12V DC loads. It is a simple solid-state relay (SSR) switch, controlled by a standard ...