Basic Level     Skills: Not specified    
Author
Author email
[email protected]
Author website
www.8051projects.net

Description

Project tested and working perfectly

Digital Lock Using AT89C2051 with LCD and Keypad - Assembly

A Brief Description:
This project is a rewrite of previously made project "Digital Code Lock using keypad and LCD"
I got many requests from student's side who want this project in Assembly language. So i spent some time making this project.

You will find working of this project same as that of original project. Nothing has been changed as such.

Its a simple project with efficient hacking prevention from Brute Force etc. The basic user lock is of 5 Digits and Master Lock is of 10 digits so its not easy for an intruder to break the lock unless you keep the code simple.
The input is taken from a 4x3 Keypad (please see the schematic for more information) and Display the user input on a 2x16 LCD. A pin is assigned as output for activating and deactivating the lock. For demonstration i have connected an LED to that pin.

User Side working:
The user has two options either he/she can use its own 5 digit code or use the default 5 digit code. If user has to do setup his own code, then he has to enter "12345" and press '#'. After this.. controller will ask for 10 Digit master password which is preprogrammed in the controller. Entering master lock, user can enter the new 5 digit code for the lock and press '#' to save it.

Using the Keypad:
Keypad has 12 keys (4x3) starting from 1,2,3,4,5,6,7,8,9,*,0,# (please see the schematic for layout). Numeric keys are used for entering numbers. '*' is used as the Cancel key and '#' is used as the Enter key.

Download File Information:
LCD.asm - Project Code
LCD.hex - Final Hex file
Digital Code Lock Schematic - PDF file of orcad schematic

If any problem Please post in the forum
  Filesize

17.46 kB

  Downloads

55018

  Rating
 

Comments

nasima
30 Oct 2014: 11:54 AM
i want you to help me in a program for interfatcing hex key pad with8051 and then make a digital lock
Kindly guide me as to how to combine the two different programs. thanks
  
ajay_bhargav
02 Nov 2014: 07:10 AM
Just down the project and go through the code yourself. If you need help, just post a question. You can also look into our tutorial section for keypad tutorial.
  
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Conversation

ExperimenterUK
Thu Nov 20 2014, 06:00 PM
@Mehboob.. I don't think you can do that.
Sat Nov 15 2014, 06:41 AM
Mehboob
Pls can you send me code in c of PWM generation using UART/serial port in 8051.
Fri Nov 14 2014, 02:51 PM
mohammad aqil
NEED A BOOK ON MICROPROCESSOR AND INTERFACING BY D.V.HALL. RIGHT NOW, I SHALL BE VERY THANK FULL TO U....
Thu Nov 13 2014, 02:15 PM
m
please code hex project avr blood pressure monitor
Thu Nov 13 2014, 05:56 AM
Lambo
hi mate, whats the ajay-bhargav? tell us more pls
ExperimenterUK
Wed Nov 12 2014, 12:56 AM
@tmtm000.. have you been able to join ?
ExperimenterUK
Wed Nov 12 2014, 12:54 AM
@Alice..become a member,then send a PM to ajay_bhargav the site owner.
Tue Nov 11 2014, 03:58 AM
Abhishek Bansal
Thanks a lot for your informative tutorials!
Mon Nov 10 2014, 09:03 AM
Alice
Hello, This is Alice from a PCB rototype manufacturer. Our company is interested in your website contents, and wonder if we can advertise our company with payment on your website. There are two ways to advertise: first, if we an get a instant quote section on your main site columns; second, whether we can get a advertising section if you have any avaliable one. If any of above ways avaliable, please contact me with your detailed scheme and advertising charge. Thanks. Alice
Sat Nov 08 2014, 11:58 AM
Mohamed_123sd
Signals and Systems, 2nd Edition by Alan V. Oppenheim Alan S.willsky with S.Hamid Nawab?

Downloads

Comments

VikiPeter
Tue Nov 18 2014, 09:13 AM
gentlboy
Sun Nov 16 2014, 11:13 PM
philipeastbourne
Wed Nov 12 2014, 05:32 AM
astra91
Mon Nov 10 2014, 08:11 AM
francise
Thu Nov 06 2014, 02:55 AM
ashbir
Tue Nov 04 2014, 11:13 PM
shruthig
Tue Nov 04 2014, 10:50 AM
sk8boardboy
Mon Nov 03 2014, 11:20 AM

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Forum Activity
ExperimenterUK Avatar
Posted By ExperimenterUK
Sat Nov 22 2014, 06:15 AM
@ExperimenterUKI make small table to observe Outpu...
Max.otto Avatar
Posted By Max.otto
Fri Nov 21 2014, 02:31 PM
@ExperimeterUKForgot my last question.As i told be...
Max.otto Avatar
Posted By Max.otto
Fri Nov 21 2014, 02:05 PM
@ExperimenterUKI make small table to observe Outpu...
Max.otto Avatar
Posted By Max.otto
Fri Nov 21 2014, 01:12 PM
@ExperimenterUKThank u. I do it. Ohne Period it's ...
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Nov 20 2014, 05:56 PM
You set the on/off times here as 47%float PWMcom...
vijay.parmar1992 Avatar
Posted By vijay.parmar1992
Thu Nov 20 2014, 04:06 AM
Right now i am studying Bootloader.I want to writ...
Max.otto Avatar
Posted By Max.otto
Wed Nov 19 2014, 03:11 PM
How can i get PWM on-off time..?pls check the atta...
Max.otto Avatar
Posted By Max.otto
Wed Nov 19 2014, 03:05 PM
I am using PSoC 5LP.pls check the attached design ...
ankitbajaj01 Avatar
Posted By ankitbajaj01
Wed Nov 19 2014, 01:49 PM
Thanks for the prompt response, I will try it out ...
engr1931 Avatar
Posted By engr1931
Wed Nov 19 2014, 11:45 AM
this one sir! i attached the whole project! ...