Blog: 2024-12-12

arduino led and buzzer

void setup() {
  // put your setup code here, to run once:
  //pinMode(LED_BUILTIN, OUTPUT);
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);

  pinMode(9, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(13, HIGH);
  digitalWrite(12, LOW);
  //tone(9, 16000);
  tone(9, 440);
  delay(1000);
  //tone(9, 10);
  noTone(9);
  digitalWrite(13, LOW);
  digitalWrite(12, HIGH);
  delay(1000);
}