#define led_merah 12
#define led_biru 13
#define led_merah2 11
#define buzzer 10


void setup() {
  pinMode(led_merah, OUTPUT);
  pinMode(led_biru, OUTPUT);
  pinMode(led_merah2, OUTPUT);
  pinMode(buzzer, OUTPUT);
  digitalWrite(led_merah, HIGH);
  digitalWrite(led_biru, HIGH);
  digitalWrite(led_merah2, HIGH);
  digitalWrite(buzzer, LOW);
  delay(5000);

}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(led_merah, HIGH);
  digitalWrite(led_biru, LOW);
  digitalWrite(led_merah2, LOW);
  tone(buzzer,1000,700);
  delay(1000);

  digitalWrite(led_merah, LOW);
  digitalWrite(led_biru, HIGH);
  digitalWrite(led_merah2, LOW);
  tone(buzzer,1000,500);
  delay(1000);

  digitalWrite(led_merah, LOW);
  digitalWrite(led_biru, LOW);
  digitalWrite(led_merah2, HIGH);
  delay(1000);

}