/*Emma pareschi 2020
 * I generate a sound on a speaker, frequenzy of 1000Hz
 */

const int speaker = 3; //buzzer to arduino pin 3


void setup(){
 
  pinMode(speaker, OUTPUT); // Set buzzer - pin 3 as an output

}

void loop(){
 
  tone(speaker, 1000); // Send 1KHz sound signal...(from 20 to 20000Hz)
  //tone(pin, frequency);
  delay(1000);        // ...for 1 sec
  noTone(speaker);     // Stop sound...
  delay(1000);        // ...for 1sec

}