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

57651

  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.
  
navig
24 Apr 2015: 18:24 PM
sir in the above shown program where are you going to dtore new password.
as you have not shown any memory ic
  
ajay_bhargav
29 Apr 2015: 18:55 PM
@navig, This project does not store password in non-volatile memory. It just stores the password in RAM and if controller resets password also resets. You can add an EEPROM to add saving password to EEPROM.
  
Muhammad Ahmad
05 May 2016: 11:50 AM
Sir. kindly upload the proteus file. i want to complete schematic diagram. thank you
  
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Conversation

Tue Nov 29 2016, 02:49 PM
jaykumar
Dear sir, elevator microprocessor control , the vendor locked the control, pls help me how can we decode the password
Sat Nov 26 2016, 10:24 AM
manikanta B
hello i know about gsm,gps and zigbee but i dont know how to use them while programming. can anyone suggest me how to use them
ExperimenterUK
Sat Nov 19 2016, 07:09 PM
@Protaz.. Really you would be better off asking on one of the many Arduino user sites
Fri Nov 18 2016, 05:39 AM
Protaz
Hi, am new in programing, but I have few skills in electronic. I want to make an automatic timing system for institutions using arduino uno. Any one to assist me how to program the microcontoller?
Tue Nov 15 2016, 04:45 AM
Hemangi patel
hello, i am working on atmega128 board and i want to interface with sd card with using fat32 file system. i am totaly new in this field .so pls anyone can u suggest me some imp links.thanks
Thu Nov 10 2016, 01:40 PM
ajith raj
hi frds i make voice control robot using blutooth module
Wed Oct 26 2016, 08:23 AM
ishalt
is it possible to completly get the robot running from java code
Sun Oct 23 2016, 05:50 PM
mamata thakur
plz send full mini project report for ic 741&ic 555 tester
Wed Oct 19 2016, 03:30 PM
riddhi1296
can you provide an explanation for the inverter 8051 code and how it works
ExperimenterUK
Sat Oct 15 2016, 12:15 AM
@snaya. Create a thread in the 8051 forum for your questions

Downloads

Comments

Jonathan.kei
Mon Nov 21 2016, 04:30 PM
AVRuser1
Sun Nov 20 2016, 06:07 PM
JaguarPaw
Thu Nov 17 2016, 07:44 PM
PeterJohn
Mon Nov 14 2016, 05:54 PM
evigna
Wed Nov 02 2016, 02:03 PM
ozancakiroglu
Thu Oct 27 2016, 01:54 PM
[email protected]
Fri Oct 21 2016, 10:35 PM
Beliwars
Sat Oct 15 2016, 09:40 AM

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Forum Activity
Centurio Avatar
Posted By Centurio
Mon Nov 28 2016, 08:46 AM
Hi there,long time ago... i've a short question to...
kirangowle Avatar
Posted By kirangowle
Wed Nov 16 2016, 03:56 PM
Hello Forum members,After a long time i am back to...
Pratik_Suthar Avatar
Posted By Pratik_Suthar
Thu Oct 13 2016, 12:39 PM
@martin the HEX file provided in the project is no...
ajay_bhargav Avatar
Posted By ajay_bhargav
Thu Oct 06 2016, 06:15 AM
Hi Phil, Do you want to add this to existing proje...
ajay_bhargav Avatar
Posted By ajay_bhargav
Thu Oct 06 2016, 06:13 AM
CE should be high when you go for reading mode/wai...
ajay_bhargav Avatar
Posted By ajay_bhargav
Thu Oct 06 2016, 06:03 AM
You can also use ESP8266 with its SDK to write app...
ExperimenterUK Avatar
Posted By ExperimenterUK
Mon Oct 03 2016, 11:15 PM
This is an old thread and the links no longer work...
martinsnc115877 Avatar
Posted By martinsnc115877
Wed Sep 14 2016, 12:51 PM
sir, i did your led scrolling mass display, and it...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Sep 09 2016, 11:45 PM
The Hex file for this project is a bit too big for...