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Author
Author email
contact@rickeyworld.info
Author website
www.8051projects.net

Description

Project tested and working perfectly

Digital Code Lock with LCD and Keypad using AT89C2051

A Brief Description:
This project is written in C language. 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.C - 4-Bit LCD Drivers
LCD.H - LCD function prototypes and other declerations
Lock.C - code for lock functioning
LOCK.H - lock function declerations
KEYPAD.C - Keypad drivers
KEYPAD.H - Function declerations
DELAY.C - Delay Functions
DELAY.H - Function Prototypes only
MAIN.C - Main function!
Digital Code Lock Schematic - PDF file of orcad schematic

If any problem Please post in the forum
Tags Digital Code LockDigital door lock projectdoor lock keypadprogrammable door lock8051 door lock project8051 digital lock
  Filesize

20.16 kB

  Downloads

63740

  Rating
 

Comments

geethika
17 Jul 2014: 06:32 AM
Sir iam unable to run the code in proteus....after displaying "Enter Lock Code : " it is not taking the input from keypad and is doing nothing.
help me.
thanku and regards.
  
ajay_bhargav
21 Jul 2014: 01:20 AM
Geethika, can you post your problem in forum with proteus schematic?
  
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Forum Activity
PavanKh Avatar
Posted By PavanKh
Fri Jul 25 2014, 01:09 AM
hello everyone ! I'm using SIM900A GSM module to s...
pravin_35 Avatar
Posted By pravin_35
Thu Jul 24 2014, 01:28 PM
Please post a diagram of the board the PIC is moun...
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Jul 24 2014, 12:52 PM
Please post a diagram of the board the PIC is moun...
pravin_35 Avatar
Posted By pravin_35
Thu Jul 24 2014, 12:08 PM
screen shot
pravin_35 Avatar
Posted By pravin_35
Thu Jul 24 2014, 08:19 AM
What kind of sample code are you looking for? any ...
nisargpatel Avatar
Posted By nisargpatel
Thu Jul 24 2014, 06:35 AM
yes ds1307 keeps time on same crystal 32.76.. but ...
pravin_35 Avatar
Posted By pravin_35
Thu Jul 24 2014, 04:35 AM
Does the DS1307 keep time ?That is, if you set it ...
pravin_35 Avatar
Posted By pravin_35
Thu Jul 24 2014, 04:31 AM
what tool is it exactly? usually parallel program ...
Anup Teke Avatar
Posted By Anup Teke
Thu Jul 24 2014, 01:08 AM
Ajay Sir,CHannel 0 Register is 24 Bit. it register...
ajay_bhargav Avatar
Posted By ajay_bhargav
Thu Jul 24 2014, 01:05 AM
what tool is it exactly? usually parallel program ...

Conversation

ajay_bhargav
Thu Jul 24 2014, 01:06 AM
@R.ABHISHEK where? I dont see it. is it in forum?
Wed Jul 23 2014, 05:49 AM
R.ABHISHEK
sir,pls message on microcontroller 8051 assambly language new program
Wed Jul 23 2014, 05:47 AM
R.ABHISHEK
sir,pls message on 8051 microcontroller assambly language program new quastions
ajay_bhargav
Tue Jul 22 2014, 09:18 AM
@Pragya Android application is taken from google play. Only Author has its source with him. Application is only used in this project.
Tue Jul 22 2014, 04:58 AM
Pragya
plz send me 8051 code and android code for android based device controller via Bluetooth .Here in this project I am using Hc-06 Bluetooth module
Thu Jul 10 2014, 09:57 AM
Caleb
plz someone mail me the source code for that project
Thu Jul 10 2014, 09:57 AM
Caleb
http://www.8051projects.net/download-d188-control-your-pc-tv-remote.html
ExperimenterUK
Tue Jul 08 2014, 03:25 PM
Post questions in the forum.. this area is for chat
Tue Jul 08 2014, 08:15 AM
P.Panchanyam
Sir i want some new ideas for my final year projects ,which would help for our soceity in future
Tue Jul 08 2014, 01:39 AM
jasvinder
Dear Sir Ref. to the discussion held with under sign, the detail is as under--- We are in weighing scale field since 1986. We are assembling the scales by purchasing the material from out source ( From India and other countries). Now we decide to make our own Card in our decided shape. So we want to develop a universal card , which we can make all types of scales of up 100000 counts with 7 segment LED Display . Also with other features like Printing, Counting, RS232 Etc. And Three Pass words at different levels. And we can edit the Softwear. What else you can provide in this field, also mention. We will pay you the development , softwear and testing charges. And up-gradation charges at time to time. Our web site is modern-scales.com Kindly revert.

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Comments

PavanKh
Fri Jul 25 2014, 12:56 AM
vinosentinal
Mon Jul 21 2014, 08:28 PM
niks_here
Sun Jul 20 2014, 05:38 PM
athiramsankar
Sun Jul 20 2014, 12:00 PM
salemalqahtani
Sun Jul 20 2014, 12:55 AM
nagarajan.electro
Sat Jul 19 2014, 12:49 AM
praru
Sat Jul 12 2014, 07:51 AM
nmcleod1993
Thu Jul 10 2014, 09:02 AM

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