Traffic Light Project With Arduino

/*

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*/



int RED_LED=6;
int GREEN_LED=4;
int YELLOW_LED=5;

void setup()
{
  pinMode(RED_LED,OUTPUT); // Red LED as an output

  pinMode(GREEN_LED,OUTPUT); // Green LED as an output

  pinMode(YELLOW_LED,OUTPUT); // Yellow LED as an output

/*********************************************************/

  /* For test the LEDs we will apply the following, it will run for once */

  digitalWrite(RED_LED, HIGH); // Turn the Red LED ON

  digitalWrite(YELLOW_LED, HIGH); // Turn the Yellow LED ON

  digitalWrite(GREEN_LED, HIGH); // Turn the Green LED ON

  delay(3000); // Wait for 3000 millisecond(s)

/*********************************************************/
  digitalWrite(RED_LED, LOW); // Turn the Red LED OFF

  digitalWrite(YELLOW_LED, LOW); // Turn the Green LED OFF

  digitalWrite(GREEN_LED, LOW); // Turn the Yellow LED OFF

  delay(2000); // Wait for 2000 millisecond (s)

/*********************************************************/

}

void loop()
{
  /* The Red signal is running */
  digitalWrite(RED_LED, HIGH);

  delay(30000); // Wait for 30000 millisecond(s).

  digitalWrite(RED_LED, LOW); // The Red signal is Turned off.

  /* The Yellow signal is running */
  digitalWrite(YELLOW_LED, HIGH);

  delay(3000); // Wait for 3000 millisecond(s).

  digitalWrite(YELLOW_LED, LOW); // The Yellow signal is Turned off.

   /* The Green signal is running */
  digitalWrite(GREEN_LED, HIGH);

  delay(30000); // Wait for 30000 millisecond(s)

  digitalWrite(GREEN_LED, LOW); // The Green signal is Turned off.


}