int pinHijau = 5;
int pinOrange = 4;
int pinMerah = 3;
int saklar = 7;

void setup() {
  // put your setup code here, to run once:
pinMode(5, OUTPUT);
pinMode(4, OUTPUT);
pinMode(3, OUTPUT);
pinMode(saklar, INPUT);
}

void loop() 
{
  // put your main code here, to run repeatedly:
int nilaisaklar = digitalRead(saklar);
if(nilaisaklar ==1) 
{digitalWrite(pinHijau, HIGH);
delay(5000);
digitalWrite(pinHijau, LOW);

digitalWrite(pinOrange, HIGH);
delay(2000);
digitalWrite(pinOrange, LOW);

digitalWrite(pinMerah, HIGH);
delay(5000);
digitalWrite(pinMerah, LOW);
}
else {
  digitalWrite(pinHijau, LOW);
  digitalWrite(pinOrange, HIGH);
  digitalWrite(pinMerah, LOW);
  delay(1000);
  digitalWrite(pinOrange, LOW);
  delay(1000);
}
}