int led = 18;
int valor = 0;

void setup() {
  // put your setup code here, to run once:
  pinMode(led, OUTPUT);
  Serial.begin(115200);

}

void loop() {
  // put your main code here, to run repeatedly:
  valor = analogRead(33);
  Serial.println(valor);

  if(valor > 45){
      digitalWrite(led, HIGH);
  }
  else{
      digitalWrite(led, LOW);
  }

}