int led = 2;
int pot = 34;

int valor = 0;

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

void loop() {

  valor = analogRead(pot);

  if (valor >= 2048) {
    digitalWrite(led, HIGH);
  } else {
    digitalWrite(led, LOW);
  }

  Serial.println(valor);

  delay(100);
}