#define POT A0
#define LED 3

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

void loop() {
  int potenciometro = analogRead(POT);
  Serial.println(potenciometro);
  int brilho;
  brilho = map(potenciometro,0,1023,0,255);
  analogWrite(LED, potenciometro);

}