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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
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70.27 kB

  Downloads

64374

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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

Fri Dec 15 2017, 12:18 PM
mehari
can not find dhtxx.md file in proteus 8.0 can anybody help me please?
sahar7478
Fri Dec 08 2017, 12:47 PM
can i get gsm a6 library? can anybody help? tia
Faiqa
Sat Nov 25 2017, 08:32 AM
Can i get the code of Monitering and controlling of green house effect? ... Can anyone help me ?
Wed Nov 08 2017, 01:35 PM
Anirudh jain
I want to burn code in atmel 89s51 24pc 0329 but cannot get the connection with the burner. Can somebody provide me with the circuit diagram for connecting controller to burner. I'm using usb burner
Thu Nov 02 2017, 11:44 AM
karpal
write a program to exchange the content of b register with external RAM address 02CFH help me
Wed Nov 01 2017, 05:47 PM
sanae
i am using the DHT11 but i'm getting some errors in the simulate the programe in proteus 8 professional,: 1)cannot find model file 'DHTXX.MDF'.2)simulation failed due to netlist linker error(s).
Fri Sep 29 2017, 02:45 AM
Maaz
i am doing the same project on verilog please contact me [email protected]
Wed Sep 20 2017, 12:36 AM
Ted
In a missing pulse detector using a 555 timer connected as a monostable vibrator with a PNP transistor,how does the positve input pulse turn on the PNP transistor?
Sun Sep 03 2017, 02:29 PM
martymarty
How do I connect an <NOKIA 1100 LCD > to an atmega328P ?
poojab51296
Sun Aug 20 2017, 10:23 AM
i am intending to interface sd card with STM32F4 and want to write a file in sd card using SPI protocol but using HAL only. Can anyone help me PLEASE!!!!

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johaneras
Fri Dec 15 2017, 08:58 AM
roopay
Wed Dec 13 2017, 07:11 AM
janvimandeep
Mon Dec 11 2017, 01:05 PM
fernanmonroy2
Mon Dec 11 2017, 08:33 AM
sahar7478
Fri Dec 08 2017, 12:34 PM
zhudao
Tue Dec 05 2017, 06:14 AM
chetan6379
Sat Dec 02 2017, 03:42 PM
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Fri Dec 01 2017, 12:05 PM

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johaneras Avatar
Posted By johaneras
Fri Dec 15 2017, 09:08 AM
Good day Rikckey's WorldI have a huge project wher...
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Posted By fernanmonroy2
Mon Dec 11 2017, 08:40 AM
Que significa que el contador de programa abordar...
zhudao Avatar
Posted By zhudao
Wed Dec 06 2017, 03:08 AM
I think either your 120 - 5 volt adapter, or the L...
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Posted By ExperimenterUK
Tue Dec 05 2017, 08:12 PM
I think either your 120 - 5 volt adapter, or the L...
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Posted By zhudao
Tue Dec 05 2017, 06:41 AM
Hi to all, in the period time I'm doing an project...
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Posted By ExperimenterUK
Mon Nov 20 2017, 10:18 PM
Here is a version of the tutorial that reads a key...
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Posted By Ansh12
Mon Nov 20 2017, 02:15 AM
As a starting point, can you tell us how much of t...
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Posted By ExperimenterUK
Sun Nov 19 2017, 08:35 PM
As a starting point, can you tell us how much of t...
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Posted By Ansh12
Fri Nov 17 2017, 04:07 AM
I am looking keypad interfacing program. I was rea...
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Posted By JardCrocker
Wed Nov 08 2017, 05:29 PM
Hi...i am a new user here. I was also facing the s...