Arduino Beginner Experiments: Arduino and Relay

HELLO THERE!!


          How are you guys doing? I hope everyone is fine and in good mood always. First of all, I would like to apologize my hiatus for about two weeks. I was actually preparing and presenting my Final Year Project for my degree. Now, that's done( a huge relief) I can continue sharing with you guys on my tinkering with Arduino. Ok, today, I would like to share about Arduino and Relay. The objective of this Experiment is to switch on/off between two channel relays.


First things first: The Software and Hardware used in this experiment:

Hardware
1.Arduino UNO

2. 2 Channel Relay

Software:

1, Arduino IDE

    After obtaining all the items, Let's assemble the circuit. Assembling the circuit is fairly simple. As I am using relay exactly as the image above, I will use the image as my reference. The connections from the relay to Arduino are as follows:

Relay          Arduino

GND-------->GND

IN1---------->digital pin8 

IN2---------->digital pin9

VCC---------> 5V

That's it for the circuit assembly. It's simple right? Now let's look at the code that runs the program:

int relay1 = 8; //IN1 at digital pin 8

int relay2 = 9; //IN1 at digital pin 9

void setup() {

 Serial.begin(9600);

  pinMode(relay1,OUTPUT);

  pinMode(relay2,OUTPUT);//declaring both relays as output

}

void loop() {

 digitalWrite(relay1, HIGH);//turn on relay 1

  digitalWrite(relay2, LOW);//turn off relay 2

delay(10000);//delay 10 seconds

digitalWrite(relay1, LOW);//turn off relay 1

   digitalWrite(relay2, HIGH);//turn on relay 2

delay(10000);//delay 10 seconds

}

Upload the code to your Arduino. After Uploading,the result of the experiment should be something like this:

Well, That's all from me for this week. I hope to see you guys next week. See ya later and Happy Tinkering!!!!