from machine import Pin
import time
led=Pin(4, Pin.OUT)
pir=Pin(13, Pin.IN, Pin.PULL_DOWN)
while True:
    if pir.value():
        print("Movimiento detectado")
        led.on()
        time.sleep(1)
    else:
        print("No hay movimiento")
        led.off()
        time.sleep(1)