from machine import Pin, PWM
from time import sleep

pir_pin = Pin(22, Pin.IN)

frequency = 5000
led = PWM(Pin(21), frequency)

while True:
    if pir_pin.value():
        print("Motion detected!")
        led.duty(1023)
    else:
        print("No motion")
        led.duty(150)
    
    sleep(0.1)