from time
from machine import Pin
buzzer =Pin(18,Pin.OUT)
while True:
buzzer.on()
time.sleep(0.5)
buzzer.off()
time.sleep(0.5)from time
from machine import Pin
buzzer =Pin(18,Pin.OUT)
while True:
buzzer.on()
time.sleep(0.5)
buzzer.off()
time.sleep(0.5)