void setup() {
  Serial.begin(9600);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
 }

void loop() {
  int valor = analogRead(A0); 
  Serial.println(valor); // Leemos el valor del potenciómetro (0-1023)
  delay(100);  // Un pequeño retraso para estabilizar la lectura
  if (valor <=403){     // 35
    digitalWrite(13, HIGH);
    digitalWrite(12, HIGH);
    digitalWrite(11, HIGH);
   
  }

  else if (valor <=456 && valor >403){ // 30 & 35
    digitalWrite(13, HIGH);
    digitalWrite(12, HIGH);
    digitalWrite(11, LOW);
    
  }

  else if (valor <=512 && valor >456){  // 25 && b30
    digitalWrite(13, HIGH);
    digitalWrite(12, LOW);
    digitalWrite(11, LOW);
    
  }
   else{
    digitalWrite(13, LOW);
    digitalWrite(12, LOW);
    digitalWrite(11, LOW);
   }
}