Relay Wiring Diagram Arduino. Controls the first relay it will be connected to an arduino digital pin in2. An ac bulb is used for demonstration.
An ac bulb is used for demonstration. Connect the side leading to the light bulb to the no terminal of the relay and the side leading to the plug to the c terminal. This way the relay is on the hot side and current is switched before it reaches the light bulb.
As mentioned earlier by interfacing arduino with 5v relay module we intend to operate an ac load like lamp.
Basic parts for wiring up arduino. I will describe the circuit for one really really have five legs 1 for nc normally closed 1 for no normally open and a common and two legs for 5 volt dc supply so whenever you will five volt input in these two legs the relay will be activated. Connect the side leading to the light bulb to the no terminal of the relay and the side leading to the plug to the c terminal. Arduino relay wiring diagram.
