const int dormitorio1=2;//declaracion de constantes
const int dormitorio2=3;
const int pir=12;
int lectura=0; //variable

void setup() {
  // put your setup code here, to run once:
pinMode(dormitorio1, OUTPUT);
pinMode(pir, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
lectura=digitalRead(pir);
if(lectura==1){
  digitalWrite(dormitorio1,1);
}
else{
  digitalWrite(dormitorio1,0);
}
}