int led = 2;
int pot = 1;

void setup() {
  pinMode(led, OUTPUT);

}

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

  // int brilho_led = map(pino, 0, 1024);
  int brilho_led = map(valor_pot, 0, 1024, 0, 255);

  analogWrite(led, brilho_led);

}