import machine
import utime

pir_pin = machine.Pin(16, machine.Pin.IN)
alarm_led = machine.Pin(26, machine.Pin.OUT)

def check_motion():
    return pir_pin.value()

def trigger_alarm():
    print("Motion detected!")
    alarm_led.on()
    utime.sleep(1)  
    alarm_led.off()

while True:
    if check_motion():
        trigger_alarm()
    utime.sleep(0.5)