const int R=11;
const int A=12;
const int V=13;
int LDR=A0;
int lectura;
void setup() {
  Serial.begin(9600);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
}
void loop() {
  lectura=analogRead(LDR);
  Serial.print("el valor es = " +String(lectura));
  if(lectura>200){
    digitalWrite(R, HIGH);
    digitalWrite(A, LOW);
    digitalWrite(V, LOW);
    delay(2000);
  }
  else if (lectura>=200 and lectura<500){
    digitalWrite(R, LOW);
    digitalWrite(A, HIGH);
    digitalWrite(V, LOW);
    delay(2000);
  }
}