Three Light Emitting Diode Running Lights in Arduino

In this article I would like to share with you a sample program that I wrote using C for Arduino to perform Three Light Emitting Diode Running Lights. The code is very simple and short I am still a beginner in Arduino Programming. I hope you will find my work useful. I used Microsoft Windows XP Service Pack 2 as my operating system, Arduino UNO and Arduino IDE in the development of this application.

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Sample Program Output

Program Listing

/* Three LED Blinkers

 *  Written By Mr. Jake Rodriguez Pomperada,MAED-IT

 *  Date : January 8, 2018      8:16 PM   Tuesday

 *  Bacolod City, Negros Occidental

 *  jakerpomperada@yahoo.com and jakerpomperada@gmail.com

 */

/* A simple program to sequentially turn on and turn off 3 LEDs */ 

int LED1 = 13;

int LED2 = 12;

int LED3 = 11;

void setup() {

   pinMode(LED1, OUTPUT);

   pinMode(LED2, OUTPUT);

   pinMode(LED3, OUTPUT);

}

void loop() {

  digitalWrite(LED1, HIGH);    // turn on LED1 

  delay(300);                  // wait for 300ms

  digitalWrite(LED2, HIGH);    // turn on LED2

  delay(300);                  // wait for 300ms       

  digitalWrite(LED3, HIGH);    // turn on LED3 

  delay(300);                  // wait for 300ms

  digitalWrite(LED1, LOW);     // turn off LED1

  delay(200);                  // wait for 200ms

  digitalWrite(LED2, LOW);     // turn off LED2

  delay(200);                  // wait for 200ms

  digitalWrite(LED3, LOW);     // turn off LED3

  delay(200);                  // wait for 200ms before running program all over again

}