from machine import Pin
from time import sleep

luz = Pin(25, Pin.OUT)
c=0
ca=0

def detectado(change):
    global c
    c+=1
    luz.value(1)
    sleep(0.01)
    luz.value(0)
    

sensor = Pin(15, Pin.IN, Pin.PULL_UP)

sensor.irq(handler=detectado, trigger=Pin.IRQ_FALLING)

while True:
    if c != ca:
       print(c)
       ca = c