Lesson 63: Introduction to using relay with Arduino
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.
- 00:00 Introduction
- 08:32 Relay power rating
- 09:54 Wiring Explained
- 11:39 Code Explained
- 13:31 Demonstration
/*
* 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
}