A python script that helps Raspberry Pi make a beep-beep sound when there is no internet 📡

internet_down_buzzer.py

import RPi.GPIO as GPIO
import time
import urllib.request

#Defining variables
buzzer_pin = 23

def setup():
    GPIO.setmode(GPIO.BCM)
    
    #Setting the buzzer pin as output
    GPIO.setup(buzzer_pin, GPIO.OUT)

#Function to check if device has internet connection
def isOnline(host='http://google.com'):
    try:
        urllib.request.urlopen(host)
        return True
    except:
        return False    

#Function to control a passive buzzer
def buzz(frequency, length):
	if(frequency==0):
		time.sleep(length)
		return
	period = 1.0 / frequency 
	delayValue = period / 2		
	numCycles = int(length * frequency)
	
	for i in range(numCycles):
		GPIO.output(buzzer_pin, True)	 
		time.sleep(delayValue)		
		GPIO.output(buzzer_pin, False)		
		time.sleep(delayValue)		
	

	
#Initializing
setup()

while True:
    if isOnline():
        print('Device is connected to internet')
        time.sleep(5.0)
    else:
        print("Device isn't connected to internet")
        #Lets make a beep when there is no internet ;)
        buzz(2489, 0.2)
        time.sleep(2.0)