Security Keypad Embedded System

Overview

This project is an Embedded System implementation for a Security Keypad. It features a password-protected system that authenticates users and allows access based on predefined logic. The project is designed to work on a microcontroller, with hardware and software components integrated to achieve a secure and functional setup.

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Hardware Design

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Features

• User Authentication: Users must input the correct password to gain access.
• Alert System: Triggers alerts upon incorrect password attempts.
• Hardware Integration: Includes keypad input and output display on an LCD.
• Embedded Software: Developed in C using AVR microcontroller libraries.

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Components

Hardware:

1. Microcontroller: AVR (e.g., ATmega32 or equivalent).
2. Keypad: 4x3 matrix keypad for user input.
3. LCD: 16x2 LCD for displaying messages.
4. Buzzer: Used for alerts or error indications.
5. Power Supply: Standard 5V DC.
6. Wires and Resistors: For proper connections.

Software:

1. Embedded C code, developed using:
   • AVR-GCC Compiler.
   • Atmel Studio or equivalent IDE.
2. Libraries:
   • LCD control library.
   • Keypad scanning library.
   • EEPROM library for password storage.

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How to Use

Setup:

1. Connect the hardware components as per the circuit diagram provided in the repository.
2. Flash the microcontroller with the provided firmware.
3. Power on the system.

Default Password:

There is no default password set initially. Users must set a password during the first operation.

Operation:

1. Enter the password on the keypad.
   • If correct, access is granted, and a success message is displayed.
   • If incorrect, an error message is displayed, and the buzzer will sound.
2. After 3 incorrect attempts, the system locks and triggers an alert.

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Installation and Compilation

1. Clone the repository:

   git clone https://github.com/Eman288/Security-Keypad-Embedded-System.git

2. Open the project in Atmel Studio or another AVR development environment.
3. Connect your microcontroller to the programmer.
4. Compile and flash the code to the microcontroller.

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How It Works

1. The system initializes and displays a welcome message on the LCD.
2. The user inputs a password using the keypad.
3. The password is checked against the stored value in the EEPROM:
   • Correct Password: Grants access.
   • Incorrect Password: Increments the failed attempt counter and triggers an alert after 3 consecutive failures.

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contributors

1. Name: Eman Tamam GitHub Profile: https://github.com/Eman288
2. Name: Aya Sabry GitHub Profile: https://github.com/ayasabry36
3. Name: Arwa Mostafa GitHub Profile: https://github.com/ArwaMostafa19
4. Name: Batoul Essam GitHub Profile: https://github.com/Batoul810
5. Name: Yasmeen GitHub Profile: https://github.com/YasmeenFci

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License

This project is licensed under the MIT License. See the LICENSE file for more details.

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Thank you for checking out this project! Your feedback and contributions are greatly appreciated.