int pinLed=2;
int pinSenMov=13;
void setup() {
  Serial.begin(9600);
  pinMode(pinLed, OUTPUT);
  pinMode(pinSenMov, INPUT_PULLUP);
}
void loop() {
  int valor=digitalRead(pinSenMov);
if(valor==HIGH)
  digitalWrite(pinLed, HIGH);
else
  digitalWrite(pinLed, LOW);
}