from machine import Pin,PWM
from time import sleep
buzzer=PWM(Pin(15))
buzzer.freq(5000)
buzzer.dety_u16(1000)
sleep(1)
buzzer.dety_u16(1)
from machine import Pin,PWM
from time import sleep
buzzer=PWM(Pin(15))
buzzer.freq(5000)
buzzer.dety_u16(1000)
sleep(1)
buzzer.dety_u16(1)