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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

54513

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Conversation

ajay_bhargav
Sat Aug 30 2014, 12:15 PM
@sufiyan, You can use solenoid lock in place of LED.
Fri Aug 29 2014, 12:17 AM
sufiyan
please can you tell me which type of lock activator should i connect in place of LED? can i use selenoid lock actuator
ajay_bhargav
Thu Aug 28 2014, 06:34 AM
Please post questions in forum
Thu Aug 28 2014, 01:44 AM
yednekachew
can you give a project made bay proteus software
Mon Aug 25 2014, 07:12 AM
Vinod Soni
Hi Sir, How can i make this RFID with ATMega16/32 controller
pavanjain
Sat Aug 23 2014, 05:10 AM
Sir i want to download the hex file in P89v51rd2 microcontroller using max232 IC but we not load the program in IC
Tue Aug 19 2014, 04:51 PM
allen ndumu
please i will like to know if the problem of speed control of dc motor using keypad and l298 was if yes can i have the complete project send it to the address i really need to see it
Tue Aug 19 2014, 10:47 AM
Amit Bisht
sir i want to have some trending projects on which i could work related to ATmega 16 microcontroller
ExperimenterUK
Sat Aug 16 2014, 04:16 PM
@diligent . create a thread
Sat Aug 16 2014, 03:17 PM
diligent
in assembly langauage programming..

Downloads

Comments

bobparihar
Mon Sep 01 2014, 06:19 AM
vijit
Sun Aug 31 2014, 08:33 AM
[email protected]
Sat Aug 30 2014, 04:45 PM
enisi
Wed Aug 27 2014, 06:08 AM
sadalakshmi
Wed Aug 27 2014, 12:39 AM
Paecake
Sun Aug 24 2014, 04:07 PM
pavanjain
Sat Aug 23 2014, 02:33 AM
samchovatiya
Thu Aug 21 2014, 02:30 PM

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Forum Activity
ExperimenterUK Avatar
Posted By ExperimenterUK
Tue Sep 02 2014, 03:32 PM
does it is TTL compatible? I checked the data shee...
Peter_Parker Avatar
Posted By Peter_Parker
Tue Sep 02 2014, 11:20 AM
What is your graph displaying ?I'm assuming it is ...
bobparihar Avatar
Posted By bobparihar
Tue Sep 02 2014, 01:59 AM
iam using EM-18 reader module.. but i want only to...
ExperimenterUK Avatar
Posted By ExperimenterUK
Mon Sep 01 2014, 10:59 PM
What is your graph displaying ?I'm assuming it is ...
Peter_Parker Avatar
Posted By Peter_Parker
Mon Sep 01 2014, 06:19 PM
Just to add to this,I've connected this now to a C...
ajay_bhargav Avatar
Posted By ajay_bhargav
Mon Sep 01 2014, 07:28 AM
Which RFID module are you using? Post link to the ...
ajay_bhargav Avatar
Posted By ajay_bhargav
Mon Sep 01 2014, 07:28 AM
We prefer to use English language on our forums. B...
bobparihar Avatar
Posted By bobparihar
Mon Sep 01 2014, 06:33 AM
i am using a RFID module, i want to connect reader...