Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to provide a detailed discussion on 2 Relay Module Interfacing with Arduino. First of all I would like to explain you that what is relay and how to use it and then we will move forward towards 2 relay module interfacing with Arduino. I have already controlled relay with 555 timers. 2 relay module consists of two relays. Relay is basically an electronic device or a switch which is used to open and close the circuits electronically.
A relay controls an electric circuit by opening and closing contacts in another circuit. When the relay contact is normally open (NO), there will be an open connection when the relay is not energized. When the relay contact is norm ...
