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Author email
[email protected]

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

62479

  Rating
 

Comments

hasitha
21 Jul 2014: 19:30 PM
what compiler use to write this project codes? How can i edit this code?
  
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Conversation

Sat Apr 25 2015, 06:16 AM
rohan_verma
sir this circuit is tested?can i use it directly on developing PCB
Sat Apr 25 2015, 06:13 AM
rohan_verma
MSCOMM32.ocx cannot be copied in the systems folder even with administration rights.
Fri Apr 24 2015, 01:58 AM
mostfa
please fix the LCD Interfacing Tutorial as all pictures is gone
Fri Apr 24 2015, 01:57 AM
mostfa
LCD Interfacing Tutorial
Qasim359
Tue Apr 21 2015, 07:31 AM
hello every one i have made pic industrial and domestic timer and i can,t understand c code written in Hi-Tech please send me Mikroc code for this project anyone...................
ExperimenterUK
Wed Apr 15 2015, 05:07 PM
@Bibek.. and everyone. Create threads if you need help. The chat box is just for chat
ExperimenterUK
Wed Apr 15 2015, 05:06 PM
@mohd atif ..login..create a post/thread,then I can post a copy of the missing file
Mon Apr 13 2015, 07:03 PM
mohd atif
@experimenteruk I didn't get you
Sun Apr 12 2015, 04:18 AM
Bibek
hello, i have made a digital clock using rtc DS12887 and AT89S52 with date n callender. Now i want to add alarm features to it.....can any body help me with the code in assembly language
Sun Apr 12 2015, 03:22 AM
SANJU123
Hello, I am planning to do simulaton of the ' 4-way traffic controller'. As a first stage of the project, I tried to compile the code given in this website in keil microvision which controls 4-way traffic . I am using AT89C51. But when I am trying to compile the code it shows an error " Device is not supported by Toolchain". Can u please help me...

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Comments

Seven
Thu Apr 23 2015, 12:02 AM
killbillpandey
Wed Apr 22 2015, 09:07 PM
Qasim359
Tue Apr 21 2015, 07:06 AM
lumines
Sat Apr 18 2015, 11:30 PM
[email protected]
Sat Apr 18 2015, 05:02 PM
arvindarunoday
Sat Apr 18 2015, 04:26 PM
samarhbk
Sat Apr 18 2015, 12:57 PM
chitty789
Tue Apr 14 2015, 06:14 PM

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Forum Activity
Qasim359 Avatar
Posted By Qasim359
Sat Apr 25 2015, 07:17 AM
plz tell me how i edit this code file in MPLAB if ...
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Apr 23 2015, 08:00 PM
gsdvprasad Avatar
Posted By gsdvprasad
Thu Apr 23 2015, 12:49 PM
ExperimenterUK Avatar
Posted By ExperimenterUK
Tue Apr 21 2015, 04:37 PM
I doubt anyone has Mikroc code.It is probably more...
ExperimenterUK Avatar
Posted By ExperimenterUK
Tue Apr 21 2015, 04:24 PM
A multimeter won't help :(The most practical way i...
ankitbajaj01 Avatar
Posted By ankitbajaj01
Tue Apr 21 2015, 03:21 PM
As I don't have CRO, Can we test the crystal with ...
Qasim359 Avatar
Posted By Qasim359
Tue Apr 21 2015, 07:26 AM
i can,t understand C Code written in Hi-Tech pleas...
gaurav7577 Avatar
Posted By gaurav7577
Mon Apr 20 2015, 07:04 AM
k..let me make all this simple for u so u can add...
ajay_bhargav Avatar
Posted By ajay_bhargav
Sun Apr 19 2015, 06:50 PM
Please zip and attach the code in future. You forg...
ajay_bhargav Avatar
Posted By ajay_bhargav
Sun Apr 19 2015, 06:48 PM
It is really hard to say which course and/or insti...