int buzzer = 7;
int potenValor = 0;
int sound = 0;

void setup(){
  pinMode(buzzer, OUTPUT);
  Serial.begin(9600);
}


void loop()
{
  potenValor = analogRead(A0);
  Serial.print("Valor do poten: ");
  Serial.println(potenValor);
  sound = map(potenValor,0,1023,0,1000);
  tone(buzzer, sound, 450);
}