#define LEDMerah 2
#define LEDKuning 4
#define LEDHijau 7

void setup() {
  pinMode(LEDMerah, OUTPUT);
  pinMode(LEDKuning, OUTPUT);
  pinMode(LEDHijau, OUTPUT);
  // put your setup code here, to run once:

}

void loop() {
  digitalWrite(LEDMerah, HIGH);
  digitalWrite(LEDKuning, HIGH);
  digitalWrite(LEDHijau, HIGH);
  delay(100);
  digitalWrite(LEDMerah, LOW);
  digitalWrite(LEDKuning, LOW);
  digitalWrite(LEDHijau, LOW);
  delay(100);
  // put your main code here, to run repeatedly:

}