#define merah 10 
#define kuning 9 
#define hijau 8

void setup() {
  // put your setup code here, to run once:
pinMode(merah,OUTPUT);
pinMode(kuning,OUTPUT);
pinMode(hijau,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(merah,1);
delay(2000);
digitalWrite(merah,0);

digitalWrite(kuning,1);
delay(500);
digitalWrite(kuning,0);


digitalWrite(hijau,1);
delay(2000);
digitalWrite(hijau,0);

}