1. Design and construction of
Password Base Digital Door Lock
Prepared By
Md. Rezaul Karim Palash
B.Sc. In EEE
Daffodil International University
Email: erkpalash@gmail.com
2. CONTENTS
Introduction
Objectives
Hardware Requirements
Circuit Diagram
Working Process Of Our Circuit
Flowchart Diagram of proposed System
Video Presentation
Advantages
Disadvantages
Limitations
Applications
Future Scope
Conclusion erkpalash@gmail.com
3. INTRODUCTION
The aim of our project is to develop “Password Based Door Lock System”.
This is a kind of microcontroller based projects, which created a secure access
for a door which needs a password to open the door.
The system will be used in places where we need more security.
It can also be used in door, lockers, offices, main gate of house, ATM etc.
erkpalash@gmail.com
4. OBJECTIVES
To develop an intelligent, Whenever the right password will be received, the
controller will accordingly give instruction to servo motor. Servo motor will perform
the action on door unlocking.
The door will close automatically after 5 seconds.
To offer safe and secure, if the password is wrong, then door would remain closed,
denying access to the person.
If give wrong password the buzzer will sound.
erkpalash@gmail.com
12. Arduino providers are almost available in our country.
We can control the home appliances by protecting with password from
unwanted hazards.
We can set password as we wish.
It is cheaper when compared to other type of automation system.
It is more effective when compared to other type of automation system.
It is easy to change to the systems action according to change in situation.
ADVANTAGES
erkpalash@gmail.com
13. It works only when DC power supply has given.
If you forget the password it is not possible to open the door.
DISADVANTAGES
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14. APPLICATION
This simple circuit can be used at residential places to ensure better safety.
It can be used at organizations to ensure authorized access to highly secured
places.
With a slight modification this Project can be used to control the switching of
loads through password.
erkpalash@gmail.com
15. FUTURE SCOPE
We can send this data to a remote location using mobile or internet.
We can add fingerprint sensor so entry will be allowed for the authorized person
using their fingerprints.
We can add fire and LPG sensors so that, the doors will automatically open.
erkpalash@gmail.com