void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(12,OUTPUT);
  pinMode(19,OUTPUT);
  pinMode(27, OUTPUT);
}

void loop() {
  tone(27,650);
  digitalWrite(13, HIGH);
  delay(300);
  digitalWrite(13,LOW);
  tone(27,700);
  digitalWrite(19, HIGH);
  delay(200);
  tone(27,800);
  digitalWrite(19, LOW);
 
  
}