from machine import Pin
import time

# Define pins
pir_sensor = Pin(16, Pin.IN)  # PIR sensor connected to GPIO16
buzzer = Pin(15, Pin.OUT)     # Buzzer connected to GPIO15

while True:
    if pir_sensor.value() == 1:  # Motion detected
        buzzer.value(1)          # Turn on the buzzer
        time.sleep(0.5)          # Buzz for 0.5 seconds
        buzzer.value(0)          # Turn off the buzzer
        time.sleep(0.5)          # Delay before the next check
    else:
        buzzer.value(0)          # Ensure buzzer is off if no motion is detected
        time.sleep(0.1)          # Check again after a short delay
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