# define ledMerah 4
#define ledKuning 8
#define ledHijau 2
 void setup() {
  // put your setup code here, to run once:
pinMode(ledMerah,OUTPUT);
pinMode(ledKuning,OUTPUT);
pinMode(ledHijau,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(ledMerah,HIGH);
delay(200);
digitalWrite(ledMerah,LOW);
delay(200);
digitalWrite(ledKuning,HIGH);
delay(200);
digitalWrite(ledKuning,LOW);
delay(200);
digitalWrite(ledHijau,HIGH);
delay(200);
digitalWrite(ledHijau,LOW);
delay(200);
}