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On Off LEDs using Arduino Programming Breadboard Circuit LEDs and Resistors | Basic To Advanced Languages | Arduino Tutorials Lessons | Part 3

 

ON/OFF LEDS using Arduino Programming, Circuit, LEDs and Resistors.

In This Video, we'll discuss Arduino programming, Breadboard LEDs Resistors and Circuit How to On Off multiple LEDs. Use Resistors with LEDs, if you don't use your Arduino circuit maybe damage. because we on off LEDs there's a particular current therefore.

You should have these to performing this basic task.

  • Arduino IDE.
  • Arduino Uno/ smd r3.
  • 4 LEDs.
  • 4 10K Resistors.
  • Breadboard.



I've not used Resistors just to show you output, in up coming course will learn the usage.

The Code for you to Perform:

int pin1=12; int pin2=10; int pin3=7; int pin4=3; void setup() {

// put your setup code here, to run once: Serial.begin(9600); pinMode(pin1, OUTPUT); pinMode(pin2, OUTPUT); pinMode(pin3, OUTPUT); pinMode(pin4, OUTPUT); } void loop() { // put your main code here, to run repeatedly: if(Serial.available()) // if there is digital pin as output

{

String command = Serial.readStringUntil ('\n'); // read String Until Meet newline character if( command == "ON LED1"){

digitalWrite(pin1, HIGH); // turn on LED Serial.println("LED is Turn ON LED1"); // send action to Serial Monitor } else if ( command =="OFF LED1") { digitalWrite(pin1, LOW ); // TURN OFF LED Serial.println("LED is Turned OFF LED1"); // send action to Serial Monitor

} else if (command =="ON LED2"){

digitalWrite(pin2, HIGH ); // TURN OFF LED Serial.println("LED is Turned ON LED2"); // send action to Serial Monitor

}

else if (command == "OFF LED2"){

digitalWrite(pin2, LOW); // TURN OFF LED Serial.println("LED is Turned OFF LED2"); // send action to Serial Monitor

} else if (command =="ON LED3"){

digitalWrite(pin3, HIGH); // TURN OFF LED Serial.println("LED is Turned ON LED3"); // send action to Serial Monitor

}

else if (command =="OFF LED3"){

digitalWrite(pin3, LOW); // TURN OFF LED Serial.println("LED is Turned OFF LED3"); // send action to Serial Monitor

} else if (command =="ON LED4"){

digitalWrite(pin4, HIGH); // TURN OFF LED Serial.println("LED is Turned ON LED4"); // send action to Serial Monitor }

else if (command =="OFF LED4"){

digitalWrite(pin4, LOW ); // TURN OFF LED Serial.println("LED is Turned OFF LED4"); // send action to Serial Monitor

} } }

OR

If you want to use directly pin numbers and If you don't wanna use variables.

void setup() {

// put your setup code here, to run once: Serial.begin(9600); pinMode(12, OUTPUT); pinMode(10, OUTPUT); pinMode(7, OUTPUT); pinMode(3, OUTPUT); } void loop() { // put your main code here, to run repeatedly: if(Serial.available()) // if there is digital pin as output

{

String command = Serial.readStringUntil ('\n'); // read String Until Meet newline character if( command == "ON LED1"){

digitalWrite(12, HIGH); // turn on LED Serial.println("LED is Turn ON LED1"); // send action to Serial Monitor } else if ( command =="OFF LED1") { digitalWrite(12, LOW ); // TURN OFF LED Serial.println("LED is Turned OFF LED1"); // send action to Serial Monitor

} else if (command =="ON LED2"){

digitalWrite(10, HIGH ); // TURN OFF LED Serial.println("LED is Turned ON LED2"); // send action to Serial Monitor

}

else if (command == "OFF LED2"){

digitalWrite(10, LOW); // TURN OFF LED Serial.println("LED is Turned OFF LED2"); // send action to Serial Monitor

} else if (command =="ON LED3"){

digitalWrite(7, HIGH); // TURN OFF LED Serial.println("LED is Turned ON LED3"); // send action to Serial Monitor

}

else if (command =="OFF LED3"){

digitalWrite(7, LOW); // TURN OFF LED Serial.println("LED is Turned OFF LED3"); // send action to Serial Monitor

} else if (command =="ON LED4"){

digitalWrite(3, HIGH); // TURN OFF LED Serial.println("LED is Turned ON LED4"); // send action to Serial Monitor }

else if (command =="OFF LED4"){

digitalWrite(3, LOW ); // TURN OFF LED Serial.println("LED is Turned OFF LED4"); // send action to Serial Monitor

} } }

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