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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

63717

  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

Sun Sep 25 2016, 04:41 AM
mira
hi sir, could you help me regarding simple multiplication calculator?it should be include with buzzer. i use dragonplus. please
ExperimenterUK
Sat Sep 24 2016, 05:49 PM
@Rus Ans .. what project ?
ExperimenterUK
Sat Sep 24 2016, 05:48 PM
@engr1931 depends on type of scanner
engr1931
Sat Sep 24 2016, 03:07 PM
Is it possible to send data from 2 barcode scanner to pc using serial port using 8051?
Wed Sep 21 2016, 02:22 AM
Rus Ana
can anyone help me for my project? T.T
Fri Sep 09 2016, 02:54 PM
Sarath babu
8051 a/c motor speed control
Tue Aug 30 2016, 05:03 PM
Kinzang
hello sir, can i know more in detail about the football substitution board project.
Tue Aug 30 2016, 06:06 AM
bhagyashri buddhewad
my project is automatic room light controller using visitor counter so i want coding in keil and circuit diagram can tell me and i want to use uc at89c51 thanks you
ExperimenterUK
Sun Aug 28 2016, 08:32 PM
Which project ?
Sun Aug 28 2016, 05:21 AM
Dipankar Baishya
Hi sir.... I want do this project but I have not this sercuit diagram..... can you give me full details and diagram...... Thank you

Downloads

Comments

Wotszat
Thu Sep 29 2016, 06:31 AM
ak_pan
Thu Sep 08 2016, 06:28 PM
martinsnc115877
Sat Aug 20 2016, 01:44 PM
rajavarmanslr
Thu Aug 18 2016, 12:24 PM
CASINODIGITAL
Mon Aug 15 2016, 09:04 PM
mariahcarey
Sat Aug 06 2016, 11:38 AM
dann11
Thu Jul 28 2016, 09:43 PM
adithyapaip
Thu Jul 21 2016, 05:45 PM

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Forum Activity
martinsnc115877 Avatar
Posted By martinsnc115877
Wed Sep 14 2016, 12:51 PM
sir, i did your led scrolling mass display, and it...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Sep 09 2016, 11:45 PM
The Hex file for this project is a bit too big for...
rajavarmanslr Avatar
Posted By rajavarmanslr
Thu Aug 18 2016, 01:40 PM
I have two 8051 that interfaces with nRF24l01. One...
rajavarmanslr Avatar
Posted By rajavarmanslr
Thu Aug 18 2016, 12:31 PM
I have two 8051 that interfaces with nRF24l01. One...
ExperimenterUK Avatar
Posted By ExperimenterUK
Mon Aug 01 2016, 05:26 AM
is working nowugoo5000Great, thanks for letting u...
ugoo5000 Avatar
Posted By ugoo5000
Sat Jul 30 2016, 07:31 AM
is working noworg 00hmov p1,#11111111bmov p3,#1111...
ugoo5000 Avatar
Posted By ugoo5000
Sat Jul 30 2016, 06:40 AM
when i press a button in p3.0,the counter will st...
ugoo5000 Avatar
Posted By ugoo5000
Sat Jul 30 2016, 06:30 AM
proteus file Attachment ...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Jul 29 2016, 11:34 PM
Your code does not count at all, it produces a one...
ugoo5000 Avatar
Posted By ugoo5000
Fri Jul 29 2016, 07:49 PM
i want the the counter to be counting in secs with...