It is no doubt that an alarm clock is always handy to alert us whenever we sleep, take a short nap, or to remind us about the work, we always get oblivious about.

Our ancestors have been using an alarm clock, going back to its 2,000 years long history but over time, the new advancements in technologies allow us to keep an alarm clock without it containing a dial, gear trains, etc. How? Let’s find out further.

Develop an Alarm Clock

About the Python Project

The objective of our project is to implement an alarm clock using Python. Python consists of some very innovative libraries such as datetime and tkinter which help us to build the project using the current date and time as well as to provide a user interface to set the alarm according to the requirement in 24-hour format.

Prerequisites

This project requires good knowledge of Python and GUI (Graphic User Interface). Python when combined with Tkinter provides a fast and easy way to create GUI applications. Tkinter provides a powerful object-oriented interface to the Tk GUI toolkit. All the modules used need not be downloaded beforehand like the other libraries like NumPy, thus this project will be user friendly and accessible in any virtual environment used for python programming.

Project File Structure

First, let’s check the steps to build an Alarm Clock program in Python:

• Importing all the libraries and modules required
• Putting forward a while loop which takes the argument of the time, the user wants to set the alarm on and automatically breaks when the time is up, with sound
• Create a display window for user input.

Download Project Code

Before proceeding ahead, please download source code: Alarm Clock Project Code

So that is basically what we will do in this Python project. Let’s start.

1. First, we import all the necessary libraries and modules:

#Importing all the necessary libraries to form the alarm clock:
from tkinter import *
import datetime
import time
import winsound

Explanation:

• Tkinter module belongs to a standard library of GUI in Python. It helps us to create a dialog box with any information that we want to provide or get from the users.
• Datetime and time modules in python help us to work with the dates and time of the current day when the user is operating python and to manipulate it too.
• Winsound module provides access to the basic sound playing machinery provided by Windows platforms. This is useful to generate the sound immediately when a function is called.

2. Create a while loop:

def alarm(set_alarm_timer):
    while True:
        time.sleep(1)
        current_time = datetime.datetime.now()
        now = current_time.strftime("%H:%M:%S")
        date = current_time.strftime("%d/%m/%Y")
        print("The Set Date is:",date)
        print(now)
        if now == set_alarm_timer:
            print("Time to Wake up")
        winsound.PlaySound("sound.wav",winsound.SND_ASYNC)
        break

def actual_time():
    set_alarm_timer = f"{hour.get()}:{min.get()}:{sec.get()}"
    alarm(set_alarm_timer)

Explanation:

• Define a function named as alarm() which takes the argument of (set_alarm_timer).It contains a while loop with a Boolean function True which makes the program automatic to work.
• time.sleep(1) halts the execution of the further commands given until we get the time value from the user later in the code and returns the background thread of the clock time going on at a regular interval.
• Get the current time using current_time which takes the argument of datetime.datetime.now().
• now is used to print the time and date is used to print the current date by string conversion using strftime().
• Define another function here named actual_time() which takes in the user value for setting the alarm in the string format. The same argument of (set_alarm_timer) as alarm before to execute the while loop which we further use while making GUI.
• If loop suggests that if the user input time set_alarm_timer matches with the while loop ongoing time now, the message is printed as” Time to Wake up”.
• winsound.SND_ASYNC plays the system generated sound as soon the condition satisfies, acting as a reminder for the alarm clock.

3. Creating GUI using tkinter:

clock = Tk()
clock.title("DataFlair Alarm Clock")
clock.geometry("400x200")

time_format=Label(clock, text= "Enter time in 24 hour format!", fg="red",bg="black",font="Arial").place(x=60,y=120)
addTime = Label(clock,text = "Hour  Min   Sec",font=60).place(x = 110)
setYourAlarm = Label(clock,tclock = Tk()
clock.title("DataFlair Alarm Clock")
clock.geometry("400x200")
time_format=Label(clock, text= "Enter time in 24 hour format!", fg="red",bg="black",font="Arial").place(x=60,y=120)
addTime = Label(clock,text = "Hour  Min   Sec",font=60).place(x = 110)
setYourAlarm = Label(clock,text = "When to wake you up",fg="blue",relief = "solid",font=("Helevetica",7,"bold")).place(x=0, y=29)

# The Variables we require to set the alarm(initialization):
hour = StringVar()
min = StringVar()
sec = StringVar()

#Time required to set the alarm clock:
hourTime= Entry(clock,textvariable = hour,bg = "pink",width = 15).place(x=110,y=30)
minTime= Entry(clock,textvariable = min,bg = "pink",width = 15).place(x=150,y=30)
secTime = Entry(clock,textvariable = sec,bg = "pink",width = 15).place(x=200,y=30)

#To take the time input by user:
submit = Button(clock,text = "Set Alarm",fg="red",width = 10,command = actual_time).place(x =110,y=70)

clock.mainloop()

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