Back to Arduino Step By Step Course

Lesson 63: Introduction to using relay with Arduino


If you don't like to see ads while video is being played you can purchase this course for $200 from Udemy or purchase YouTube premium Here

Part 6: Using Relay with Arduino

In this lesson we learn about relay and how it functions. Then give example of electromagnet and how relay function internally. The wiring of a relay module is shown and code is explained.


  /*
 * Lesson 63: Introduction to using relay with Arduino 
 * This Arduino Sketch controls 5V relay module by turning it ON
 * or OFF at the set intervals
 Watch full detailed video: https://youtu.be/N-xbxtGGoHw
 * 
 
 * Written by Ahmad Shamshiri  
 * on Dec 26, 2018 in Ajax, Ontario, Canada
 * 
 This video is part of Arduino Step by Step Course which starts here: https://youtu.be/-6qSrDUA5a8

 

If you found this tutorial helpful, please support me so I can continue creating 
content like this. You can support me on Patreon http://robojax.com/L/?id=63

or make donation using PayPal http://robojax.com/L/?id=64

 *  * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.* 
 * This code has been download from Robojax.com
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

int relayPin = 2;// define output pin for relay 

void setup() {
  pinMode(relayPin, OUTPUT);// define pin 2 as output

}

void loop() {
  
  digitalWrite(relayPin, LOW); // turn the relay ON 
  delay(200); // wait for 3 seconds
  digitalWrite(relayPin, HIGH);// // turn the relay OFF 
  delay(200);// wait for 1 second

  digitalWrite(relayPin, LOW); // turn the relay ON 
  delay(200); // wait for 3 seconds
  digitalWrite(relayPin, HIGH);// // turn the relay OFF 
  delay(200);// wait for 1 second

  digitalWrite(relayPin, LOW); // turn the relay ON 
  delay(2000); // wait for 3 seconds
  digitalWrite(relayPin, HIGH);// // turn the relay OFF 
  delay(1000);// wait for 1 second   
}

   

The least I expect from you is to thumb up the video and subscribe to my channel. I appriciate that. .I have spent months making these lectures and writing code. You don't lose anything by subscribging to my channel. Your subscription is stamp of approval to my videos and more people can find them and in it turn it helps me. Thank you

If you found this tutorial helpful, please support me so I can continue creating content like this. support me via PayPal

**** AFFILIATE PROGRAM **** We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.