Arduino code and Video for Dual Channel 5V Relay Robojax.com

This is the Arduino code for Dual Channel 5V Relay

This video shows you how to use control or connect 2 AC or DC load using Arduino and relay. http://robojax.com/learn/arduino/

 /*
 * This is the Arduino code for Dual Channel 5V Relay
 * to control turn ON or OFF AC or DC load. You can control 2 differen loads such as bulbs, or heater or other machine
 * Watch the video https://youtu.be/EclIomn_3dI
 *  * 
 * Written by Ahmad Nejrabi for Robojax Video
 * Date: Dec 26, 2017, in Ajax, Ontario, Canada
 * Permission granted to share this code given that this
 * note is kept with the code.
 * Disclaimer: this code is "AS IS" and for educational purpose only.
 * 
 */

void setup() {
  
  Serial.begin(9600);// setup Serial Monitor to display information
  pinMode(7, OUTPUT);// connected to Relay 1
  pinMode(8, OUTPUT);// connected to Relay 2

}

void loop() {
  digitalWrite(8, LOW); // turn relay 2 OFF 
      Serial.print("Pin 8 LOW");
  digitalWrite(7,HIGH);// turn relay 1 ON
      Serial.println(" Pin 7 HIGH");
  delay(3000);// keep in relay 2 OFF and relay 1 On for 3 seconds
  digitalWrite(7, LOW);// turn relay 1 OFF
  digitalWrite(8,HIGH);// turn relay 2 ON
      Serial.print("Pin 7 LOW");
      Serial.println(" Pin 8 HIGH");
  delay(3000);// keep in relay 1 OFF and relay 2 On for 3 seconds


}