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Author
Author email
kdvustudents@hotmail.com

Description

Combination Lock with LCD and Keypad using pic16f628A:

A Brief Description:

This project is written in C language. The basic user lock is of 2 Digits.
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.


How combination lock works:

1. Turn switch on (5V DC voltage power supply)
2. A message name “Combination Lock” will display on LCD at first row,
3. Second row display “Enter Pass:” it asked you to enter password for open doors.
4. In this lock design it has three doors. These are the code locks to open doors “door1=05, door2=28, door3=82, door1 & door2 = 33”.
5. If you entered one of the codes in step 4 then press enter key that door will open. For example, you enter 05 for door 1 it’s then open and close door 1 after 5 seconds.
6. If codes you entered are not matched one of the code in step 4 then led door is not turn on.
7. If your first attempt failed the message “invalid code’ display on screen.
8. Then you pressed any key to clear and you can try for second attempt.

After you have reached three attempts but you have not entered correct password. Next Any Keys press alarm will activate for 5 seconds.

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:

Flowchart.jpg
Combination_lock.c
Diagram bitmap.bmp
Lock_EBES_MODEL.DSN ( Using Proteus to run this file)
Combination_Lock.hex
Tags PIC digital lockpic microcontroller combination lockcombination lock projectPIC microcontroller digital lockdigital lock using pic micro
  Filesize

70.27 kB

  Downloads

61117

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Comments

hasitha
21 Jul 2014: 15:30 PM
what compiler use to write this project codes? How can i edit this code?
  
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Forum Activity
pravin_35 Avatar
Posted By pravin_35
Sun Jul 27 2014, 12:48 PM
its reading 0x00 device ID, which means either dev...
Peter_Parker Avatar
Posted By Peter_Parker
Sat Jul 26 2014, 10:29 AM
Hey guys,Tried using the search button to look for...
pravin_35 Avatar
Posted By pravin_35
Sat Jul 26 2014, 01:34 AM
its reading 0x00 device ID, which means either dev...
ajay_bhargav Avatar
Posted By ajay_bhargav
Fri Jul 25 2014, 05:37 PM
its reading 0x00 device ID, which means either dev...
ajay_bhargav Avatar
Posted By ajay_bhargav
Fri Jul 25 2014, 05:32 PM
I get it now.. Did not read that part, sorry for m...
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 ...

Conversation

Sun Jul 27 2014, 12:23 AM
Anshu Raj
sir plz send the automatic collage alram bells in 2 hrs bells ring. For microcontroller programme plz sir
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

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Imran.pk
Fri Jul 25 2014, 07:50 PM
PavanKh
Fri Jul 25 2014, 12:56 AM
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athiramsankar
Sun Jul 20 2014, 12:00 PM
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Sun Jul 20 2014, 12:55 AM
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Sat Jul 19 2014, 12:49 AM
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Sat Jul 12 2014, 07:51 AM

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