//variabler
  int redLED = 13;
  int yellowLED = 12;
  int greenLED = 11;  
  /*
  int testPIN = 10;
  boolean test = HIGH;
  */
  
void setup() {  
  
  pinMode(redLED,OUTPUT);
  pinMode(yellowLED,OUTPUT);
  pinMode(greenLED,OUTPUT);
 
  //test af lyskurve
  	digitalWrite(redLED, HIGH);
 	 digitalWrite(yellowLED, HIGH);
  	digitalWrite(greenLED, HIGH);  
 	 
 	 /*  
  	//test med pause i 5 sekunder
 	 delay(5000);
 	 */
  
 	 /*
 	 // test med do-while kontakt
 	 //pinMode(testPIN,INPUT_PULLUP);
 	 do 
 	 {
   	 test = digitalRead(testPIN);  
 	 } while (test == HIGH);
 	 */

}

void loop() {  
  //tænd rød i 5 sekunder
  digitalWrite(redLED, HIGH);
  digitalWrite(yellowLED, LOW);
  digitalWrite(greenLED, LOW);
  delay(5000);  
  //tænd rød og gul i et sekund
  digitalWrite(redLED, HIGH);
  digitalWrite(yellowLED, HIGH);
  digitalWrite(greenLED, LOW);
  delay(1000);
  //Tænd grøn i 5 sekunder
  digitalWrite(redLED, LOW);
  digitalWrite(yellowLED, LOW);
  digitalWrite(greenLED, HIGH);
  delay(5000);
  //tænd gul i 2 sekunder
  digitalWrite(redLED, LOW);
  digitalWrite(yellowLED, HIGH);
  digitalWrite(greenLED, LOW);
  delay(2000);                                                                                                                                                 
}