from machine import Pin
import time

buzzer = Pin(27, Pin.OUT)
button = Pin(17, Pin.IN, Pin.PULL_UP)

print("Đang chờ nhấn nút...")

while True:
    if button.value() == 0:  
        print("Đã nhấn nút! Còi kêu...")
        buzzer.value(1)     
        time.sleep(0.5)     
        buzzer.value(0)     
    time.sleep(0.1)