Other Arduino Codes and Videos by Robojax
This code is to control AC bulb using Arduino and 5V relay. Basic code is simple control while the Advanced code makes use of Low-level trigger relay or High-level trigger relay possible.
/*
* Arduino code to control AC bulb with relay
*
*
* Written by Ahmad Shamshiri for Robojax.com on Saturday August 17, 2019
* at 16:27 in Ajax, Ontario, Canada
* Watch video instruction
* for this code: https://youtu.be/g6k8sPJyif8
*
* 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 = 3;
int loopDelay = 1000;// delay in loop
void setup() {
pinMode(relayPin, OUTPUT);// set pin as output
digitalWrite(relayPin, HIGH); // set initial state OFF for low trigger relay
Serial.begin(9600);// initialize serial monitor with 9600 baud
Serial.println("Robojax Relay Control- AC bulb");
delay(2000);
}
void loop() {
// Robojax AC load control with 5V relay
// turn relay ON
digitalWrite(relayPin, LOW);
Serial.println("Relay is ON");
delay(2000);// wait for 2 seconds
// turn relay OFF
digitalWrite(relayPin, HIGH);
Serial.println("Relay is OFF");
delay(2000);// wait for 2 seconds
Serial.println("===============");
delay(loopDelay);// wait for loopDelay ms
}// loop end This code is to control Low-level trigger relay or High-level trigger relay easily. Please watch video for details
/*
* Arduino code to control AC bulb with relay
* This is Advanced Code which works with LOW trigger and HIGH trigger relays
*
* Written by Ahmad Shamshiri for Robojax.com on Saturday August 17, 2019
* at 16:27 in Ajax, Ontario, Canada
* Watch video instruction
* for this code: https://youtu.be/g6k8sPJyif8
*
* 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 = 3;
const int triggerType = LOW;// your relay type
int loopDelay = 1000;// delay in loop
int relayOFF, relayON;// relay ON and OFF values for LOW and HIGH Trigger relays
void setup() {
pinMode(relayPin, OUTPUT);// set pin as output
if(triggerType ==LOW){
relayON = LOW;
relayOFF = HIGH;
digitalWrite(relayPin, relayOFF); // set initial state OFF for low trigger relay
}else{
relayON = HIGH;
relayOFF = LOW;
digitalWrite(relayPin, relayOFF); // set initial state OFF for high trigger relay
}
Serial.begin(9600);// initialize serial monitor with 9600 baud
Serial.println("Robojax Relay Control - Advanced code");
delay(2000);
}
void loop() {
// turn relay ON
digitalWrite(relayPin, relayON);
Serial.println("Relay is ON");
delay(2000);// wait for 2 seconds
// turn relay OFF
digitalWrite(relayPin, relayOFF);
Serial.println("Relay is OFF");
delay(2000);// wait for 2 seconds
Serial.println("===============");
delay(loopDelay);// wait for loopDelay ms
}// loop end 
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