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8051 Projects [ projects based on 8051 ]

Digital Lock Using AT89C2051 with LCD and Keypad - Assembly

Author

Ajay Bhargav

Author email

contact@rickeyworld.info

Author website

www.8051projects.net

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Description

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

Image

Filesize

17.46 kb

Date

Friday 30 May 2008 - 23:49:07

Downloads

3825

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Rating

3.0 - 2 votes

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Comments

dts | 01 Jun : 10:25

My Avast! anti-virus software picked up a trojan when I attempted to download the project file.
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۞ TPS ۞ | 05 Jun : 03:06

what is the password ??
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H Maheshwari | 26 Jun : 01:08

Sir Can I design this project in my final year B.E. . Plz suggest some projects based on microcontrollers.
Reply to this

Iqbal | 30 Jun : 21:38

can anyone have the program in c language of this project
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Ajay | 30 Jun : 22:20

Check download section..
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DivyangPatel | 07 Aug : 10:29

Please,tell me 10 Digit master password which is preprogrammed in the controller.
Reply to this

Ajay | 07 Aug : 22:04

its there in c file check it (main.c)
Reply to this

cool_tauqeer | 08 Aug : 10:38

HI
CAN ANY ONE PROVIED ME THE C CODE OF THIS PROJECT KINDLY I NEED IT. PLZ HELP ME AND PROVIDE ME THE CODE
kindly contact me at "tauqeerahmadpk786@gmail.com"
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