Electronic Security Code Lock System

Hi friends, This is a video for testing operations, your comments and suggestions are very helpful for next version of this system. If you have any idea we can work together for developing system. Here you can get information about hardware configuration, user operations and silent operations.

- Mail: arshad.pathan(at)gmail.com
- Web: www.arshadpathan.com
- Blog: ars2k6.blogspot.com

Hardware Configuration:
- 16 x 2 LCD User interface display
- Password Input by 4 x 3 keyboard  matrix with 0-9,* and # keys are in use
- Stepper motor is connected for locking and unlocking operations.
- There is an option for Relay, Servo Motor, DC Motor or Electro Magnet also.
- There is a green and red light indication.
- If door is locked red led will on, or on unlock green will on.
- Buzzer indication for errors and ok states

User Operation:
- For first time default password is 1234 then user can it by new password.
- Enter correct password for unlocking operation.
- System will gives error message for each wrong operation.
- Only unlock on correct password.
- User can change password by pressing 9999.
- It will ask for current password,
- If it is ok then ask for new password, then display it for 2 second.
- User can lock door any time by pressing * (Star) button.
- In door unlock mode as well as in password change mode.

Silent Operation:
- On system starts, stepper motor will find the home position using lever switch
- It will getting input from external lever switch
- When get input from lever switch, it will conform home position.
- In home position door is in lock mode.
- Stepper motor is in release mode (power off mode) after each operation.
- This operation is helpful for power saving.
- Password will save in microcontroller memory.
- In power off condition circuit will remember password without any battery backup.
- When door is unlocked and user will press * then it will give message for already unlocked condition.

Thanks for your attention.

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    26 Discussions


    Question 1 year ago on Introduction

    Hello dear friend.
    i have few questions :
    1) how you can use this system finger for a university and is it able to response for a university educator capacity?
    2) is it able to work with php language ?

    1 answer

    Answer 9 months ago

    Now, advanced technologies are accessible, so it is possible to develop the system as per your requirements as well it is possible to make it web-based data logging and validation.


    4 years ago on Introduction

    Proximity Credentials provides a higher level of security, more convenience and far greater functionality than a proximity card. As used on your business and in
    newer access control systems, smart credentials have the ability to manage access and many other functions much more securely. More details to see- www.doorenrycontrol.com

    electronic door lock


    4 years ago on Introduction

    Hi Arshad,

    you can sell this product for me?

    i'm interest.



    First of all i would like to tanks for your creativity!

    My name is Tesfaye Tsegaye i am electrical - electronics student now i want to make Electronics security code lock system with password for senior project. if you are help me i am interested to make this project. Our project submitting date coming soon which means after two month, so i want detail information about programming and all steps. Have a nice time. I will wait your answer. I hope you will be help me. Good bey!


    5 years ago on Introduction

    this would be a excellent instructable, if it did that instruct, this is just a show off and attention grabber... final video uploads alone do not help people in building, recreating, or modifying a design for personal use. if you want to be a good contributor to the site then do so in a manner that is conducive to others and give all the information that is required so that we don't have to ask you for the parts list, code, schematics etc


    5 years ago on Introduction

    Sir can u email me the circuit plz my email id is-hemant.cdy@gmail.com


    5 years ago on Introduction

    how does the lock work ? ..........how do i know if its open or locked ... i can't see that in ur vdeo


    6 years ago on Introduction

    Hi, how much did the entire project cost? Also could you send me a copy of the motor controlling part of the project? my email address is karthik.mukund@yahoo.com

    1 reply

    7 years ago on Introduction

    hello arshad.pathan.....can you send me the source code for the Electronic security code lock system Project...my email is nashki_30@yahoo.com...thank you....

    1 reply