from machine import Pin
import time
pulsador=Pin(21,Pin.IN)
contar=0
while True:
    boton= pulsador.value()
    if boton ==1:
        time.sleep(0.5)
        contar=contar+1
        print("Pulsador presionado: ",contar," veces")
        if contar==3:
            print("intruso")
            contar=0