Control AC Light Using Relay With Arduino Mega 2560

Introduction

• In this article, I will explain about controlling the AC Light using relay with Arduino Mega.
• It can be used to control the light by the relay.
• The relay can act as a switch.  

Parts Used

• Arduino Mega 2560
• AC Light
• Relay
• Bread Board
• HookUp Wires 

Connection

Step 1 Connect the light to the Arduino Mega 2560.

• Connect the positive side to the positive side of the AC Supply 
• Connect the negative side to the negative side of the AC Supply. 

Step 2 Connect the relay to the Arduino Mega 2560

• Connect the vcc of the relay to the 5v of the Arduino board.
• Connect the gnd of the relay to the Gnd of the Arduino Board.
• Connect the vin of the relay to the pin 07 of the Arduino Board. 

Programming

digitalWrite(RELAY1, LOW); // Turns ON Relays 1

Serial.println("Light ON");

delay(2000); // Wait 2 seconds

digitalWrite(RELAY1, HIGH); // Turns Relay Off

Serial.println("Light OFF");

delay(2000);

Explanation

• When the relay is ON, the AC Light is also ON.
• When the relay is OFF, the AC Light is also OFF.
• We have set the time of the delay to be ON/OFF.
• When the light is on, they will print in the serial monitor as "LIGHT ON".
• When the light is off, they will print in the serial monitor as "LIGHT OFF".