INTRODUCTION

In this project, we make a Clock alarm using a push-button and a 16*2 LCD Display with Arduino Uno.

Here 4 push buttons were used where 2 push buttons to increase or decrease the value and other 2 push buttons for ‘set time’ and ‘set alarm’

HARDWARE REQUIRED

• Arduino UNO with USB Cable – 1
• LCD 16*2 – 1
• Potentiometer 10k – 1
• Breadboard 830 Points – 1
• Jumper Wires Male to Male – 20 Piece
• Jumper Wires Male to Female– 20 Piece
• Push Button – 5
• Buzzer B10 – 1
• Single Strand Wire 2m - 1

SOFTWARE REQUIRED

Arduino IDE (programmable software for Arduino)

https://www.arduino.cc/en/Main/Software

PIN DESCRIPTION

16*2 LCD:

10K Potentiometer:

YOU CAN ADJUST THE CONTRAST OF THE LCD BY ROTATING THIS 10K POTENTIOMETER-

CIRCUIT DIAGRAM

Arduino to 16*2 LCD:

Push Button to Arduino:

Buzzer to Arduino:

CODE

Click to see the code or copy the link:

https://qrgo.page.link/LV2jd

WORKING

• PUSH BUTTON 1- Press the button once, and the alarm clock will show on the LCD.
• PUSH BUTTON 2- Press the second button to show the clock time.
• SET TIME- Hold the 3^rd push button and press push button 1 to set the hour and push button 2 to set the minute
• ALARM TIME - Hold the 4^th push button and press push button 1 to set the hour time and push button 2 for a set minute
• When the time matches the alarm time, the buzzer starts ringing.