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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

64857

  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

Fri Jul 19 2019, 10:33 AM
charmdatedhd
cooking
ExperimenterUK
Thu Jul 11 2019, 07:55 PM
@ramos https://www.theengineeringprojects.com/2017/09/l298-motor-driver-library-proteus.html
ExperimenterUK
Thu Jul 11 2019, 07:44 PM
@praveen123. Can you give a link to the project ?
Thu Jul 11 2019, 04:47 PM
ramos
buenos dias alguien podria ayudarme necesito saber como descargar la libreria del l298n para proteus
Thu Jul 11 2019, 11:11 AM
praveen123
anyone can help me
Thu Jul 11 2019, 11:11 AM
praveen123
i need source code for 8051 -smart trolley rfid
Thu Jul 11 2019, 11:10 AM
praveen123
hii
ExperimenterUK
Thu Jun 27 2019, 09:14 PM
Hi.. good to see you again
۞ TPS ۞
Thu Jun 27 2019, 07:31 AM
Hello
AdiGhazi
Tue Jun 18 2019, 11:21 AM
Hlo Dear , I've to program AT89C51AC3 RT-LUM using flip but I'm getting time out error for RS232. Will you please suggest me which programmer will be supportable to program this Chip.

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Comments

rpels7707
Fri Jul 19 2019, 11:31 AM
ameya123
Fri Jul 19 2019, 07:36 AM
anhsieuno
Thu Jul 18 2019, 11:39 AM
zxcvbnm1234
Sat Jul 13 2019, 07:09 AM
surajghayal
Wed Jul 10 2019, 01:17 PM
figureyang
Fri Jul 05 2019, 04:25 AM
mousompal
Sat Jun 29 2019, 05:02 PM
AdiGhazi
Tue Jun 18 2019, 11:15 AM

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Forum Activity
ameya123 Avatar
Posted By ameya123
Fri Jul 19 2019, 07:42 AM
Hello,Please share 8051 Assembly language code for...
figureyang Avatar
Posted By figureyang
Fri Jul 05 2019, 04:37 AM
here is the source code prepared for you download ...
figureyang Avatar
Posted By figureyang
Fri Jul 05 2019, 04:30 AM
Cheap_Flash_FS(Normal Version)--Embedded FAT16/32 ...
wimac Avatar
Posted By wimac
Sat Jun 22 2019, 01:26 PM
I’ve use the AT89C51ED2 which has a similar progra...
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Jun 20 2019, 10:08 PM
baud rate is 9600 at stop bits of 2. AdiGhaziThe u...
AdiGhazi Avatar
Posted By AdiGhazi
Thu Jun 20 2019, 05:24 AM
Dear,I'm using RS232 serial port cable to use flip...
ExperimenterUK Avatar
Posted By ExperimenterUK
Tue Jun 18 2019, 10:19 PM
Okay.. I have never programmed the AT89C51AC3 or ...
AdiGhazi Avatar
Posted By AdiGhazi
Tue Jun 18 2019, 11:20 AM
Hlo Dear ,I've to program AT89C51AC3 RT-LUM using ...
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu May 30 2019, 08:32 PM
It occurs to me that although the P89LPC921 and P8...
ExperimenterUK Avatar
Posted By ExperimenterUK
Wed May 29 2019, 09:05 PM
I would suggest a fresh approach.The Keil compile...