Open loop Alarm with Raspberry pi pico


#This is a micropython Script of an open loop Alarm 

from machine import Pin,PWM

from utime import sleep

button_NC = Pin(16,Pin.IN,Pin.PULL_UP)#NC PB to Gp16 and GND via 10K resistance

led = Pin(15,Pin.OUT)

buzzer = PWM(Pin(13))

while True:

    if button_NC.value()==1:

        led.toggle()

        buzzer.freq(500)#Buzzer will start to beep according to the frequency and duty.

        buzzer.duty_u16(90000)

        sleep(0.5)

        buzzer.duty_u16(0)

        sleep(0.05)

        buzzer.duty_u16(1)

    else:

        led.off()

        buzzer.deinit()

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