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

57172

  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.
  
(Required; Min length 5)
(Required; will not be displayed)

Conversation

ExperimenterUK
Thu Apr 28 2016, 01:15 AM
We don't provide project reports. We try to help you do your project
Wed Apr 27 2016, 06:02 PM
abebe tigabu
help me by sending final thesis project automatoc green house effect control by arduino or by at89c51 microcontroller
Mon Apr 25 2016, 03:40 AM
abhinav kumar
Hey there, i want to project report on the RFID BASED SECURITY SYSTEM using AVR microcontroler.please mail as soon as possible. Thank you
Mon Apr 18 2016, 01:07 PM
umesh parekh
i want c code for rfid based car parking system using 8051 and parking slot indicator.if u have please email me
Mon Apr 18 2016, 10:35 AM
Prakash Rao
i need to work on OCR for Numbers, could not find any such projects done using 8051
Wed Apr 13 2016, 07:27 PM
Sanket GUPTA
hey i am new to embedded system and i want to pursue ms in embedded, i have 2 years before i can apply for ms.. in two years can i gain sufficient knowledge. i know c and c++
ExperimenterUK
Wed Apr 13 2016, 05:15 PM
@Suraj.. the method will work ,but edit to suit your compiler
Wed Apr 13 2016, 01:05 AM
Suraj Sridhar
Can I use the LCD Device driver code for STM32F401RET6?
Mon Apr 11 2016, 04:38 PM
Ankith
Can I get the code to access the file from 8051
Mon Apr 11 2016, 04:37 PM
Ankith
can I access a file or folder from sdcard using 8051 microcontroller?

Downloads

Comments

afzal42
Wed May 04 2016, 11:16 AM
pd
Sun May 01 2016, 01:35 AM
uk2308
Fri Apr 29 2016, 12:27 PM
legomaniak
Thu Apr 28 2016, 03:26 PM
APEGEEKZ
Mon Apr 25 2016, 01:54 PM
aishwar
Sun Apr 24 2016, 10:58 AM
nitring
Sun Apr 24 2016, 09:38 AM
Yuri_Golden
Fri Apr 22 2016, 05:15 PM

Online

Guests: 47, Members: 0 ...

most ever online: 182184
(Members: , Guests: 182184) on 06 Aug 2010: 05:37 AM

Members: 37760
Newest member: afzal42
Forum Activity
Karan123 Avatar
Posted By Karan123
Sat Apr 30 2016, 08:10 AM
Hi,C2000 has quite big series from TI.Which C2000 ...
uk2308 Avatar
Posted By uk2308
Fri Apr 29 2016, 12:33 PM
i need to know the harware connection of c2000 wit...
legomaniak Avatar
Posted By legomaniak
Thu Apr 28 2016, 03:29 PM
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Apr 28 2016, 01:12 AM
Did you read / understand my last post to your oth...
APEGEEKZ Avatar
Posted By APEGEEKZ
Mon Apr 25 2016, 02:54 PM
im sending mail using sim900 to gmail but its thro...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sun Apr 24 2016, 06:51 PM
This file was hosted by Rapidshare.comRapidshare.c...
aishwar Avatar
Posted By aishwar
Sun Apr 24 2016, 11:02 AM
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Apr 22 2016, 07:29 PM
You will have to post your code and Proteus projec...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Apr 22 2016, 07:19 PM
If the temperature is below the set point, "if (te...
Yuri_Golden Avatar
Posted By Yuri_Golden
Fri Apr 22 2016, 05:33 PM
Hey Guys, I searched in the forum about a similar ...