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Author email
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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

61430

  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

ExperimenterUK
Wed Oct 01 2014, 09:33 PM
We're back.. we had a bug, but posting is back to normal
ExperimenterUK
Sat Sep 13 2014, 04:34 PM
jaimin1212,Pimpalkhare Create a thread for your question
jaimin1212
Sat Sep 13 2014, 06:35 AM
i want to make self balancing robot using MPU6050 using atmega8.. please help to get data of gyro and accelerometer from this sensor through atmega8.
Thu Sep 11 2014, 01:00 PM
Sunil Pimpalkhare
Hello sir, I am trying to make Wearfin project https://www.youtube.com/watch?v=iZ6PVBvQf-g so can u help me in teaching how to built the program???
Thu Sep 11 2014, 06:21 AM
hariom panday
plz hlp me in my project
iec.naga
Tue Sep 09 2014, 05:19 AM
spi
Mon Sep 08 2014, 12:14 PM
fameem
water changing in fish tank automatically using microcontoller with timer. send idea to me
dexter_a
Sat Sep 06 2014, 03:09 PM
hello guys
Sat Sep 06 2014, 02:10 PM
munaxa
plx guide me
Sat Sep 06 2014, 02:09 PM
munaxa
hi i want to buy plx guie me

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engwas
Tue Sep 30 2014, 12:42 PM
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Posted By ExperimenterUK
Wed Oct 01 2014, 09:30 PM
Sorry about the delay in replying,the website had ...
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Posted By kirangowle
Sat Sep 20 2014, 04:35 AM
Hello All,I want to connect normal speaker (as a s...
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Posted By ajay_bhargav
Wed Sep 17 2014, 04:59 AM
I think its important to list out the features of ...
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Posted By ajay_bhargav
Wed Sep 17 2014, 04:45 AM
you need to put a wait condition in ISR till the s...
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Mon Sep 15 2014, 08:41 AM
sir,i used microcontroller 89v51rd2 in circuit. No...
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i am programming interrupt 0 using 8051my task is....
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Posted By ExperimenterUK
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There may not be an exact equivalent .You will hav...
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Sir, Good Morning,Thank you for making me a member...
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Posted By ajay_bhargav
Thu Sep 11 2014, 04:52 AM
which compiler are you using? I suggest XC8 with M...
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Thu Sep 11 2014, 04:49 AM
I always prefer Olimex Dev boards when it comes to...