connecting Transistor Emitter to Relay and Base to Arduino Pin 2 and Collector to 5V in Arduino . connecting Push Button to Pin 8 in Arduino and Terminal 1a to GNR and Terminal 2a to 5V in Arduino .

Well, what is the use of a relay that provides the operating system for the push-button start and handles devices with high voltages up to 220V? Through the relay, a bulb or any electronic device can ...