int buzz = 9;
int pot = 1;

void setup() {
  pinMode(buzz, OUTPUT);
}

/*void loop() {
  int valor_pot = analogRead(pot);

  // int brilho_led = map(pino, 0, 1024);
  int freq = map(valor_pot, 0, 1024, 0, 1000);

  tone(buzz, freq, 100);
  noTone();

}*/

void loop() {
  int valor_pot = analogRead(pot);

  int volum = map(valor_pot, 0, 1023, 0, 255);

  analogWrite(buzz, volum);

}