from machine import Pin      
from time import sleep   

Motion_Detected = False  

def handle_interrupt(Pin):    
 global Motion_Detected
 Motion_Detected = True

led=Pin(14,Pin.OUT)  
PIR_Interrupt=Pin(13,Pin.IN)

PIR_Interrupt.irq(trigger=Pin.IRQ_RISING, handler=handle_interrupt)        

while True:
  if Motion_Detected:
   print('Motion is detected!')
   led.value(1)
   sleep(20)
   led.value(0)
   print('Motion is stopped!')
   Motion_Detected = False
  else:
   led.value(1)   
   sleep(1)        
   led.value(0)   
   sleep(1)