int merah =5;
int kuning =4;
int hijau =3;
int buzzer =12;
void setup() {
pinMode(merah, OUTPUT);
pinMode(kuning, OUTPUT);
pinMode(hijau, OUTPUT);
pinMode(buzzer, OUTPUT);
}

void loop() {
digitalWrite(merah, HIGH);
digitalWrite(kuning, HIGH);
digitalWrite(hijau, HIGH);
digitalWrite(buzzer, HIGH);

tone(buzzer,294);//Do
delay(500);
noTone(buzzer);
tone(buzzer,262);//Re
delay(500);
noTone(buzzer);
tone(buzzer,330);//Mi
delay(500);
noTone(buzzer);
noTone(buzzer);
tone(buzzer,349);//Fa
delay(500);
noTone(buzzer);
tone(buzzer,395);//Sol
delay(500);
noTone(buzzer);
tone(buzzer,440);//La
delay(500);
noTone(buzzer);
tone(buzzer,494);//Si
delay(500);
noTone(buzzer);
tone(buzzer,523);//Du
delay(500);
noTone(buzzer);


delay(500);
digitalWrite(merah, LOW);
digitalWrite(kuning, LOW);
digitalWrite(hijau, LOW);
digitalWrite(buzzer, LOW);
delay(500);



}