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digital code lock with lcd and keypad

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sheryl

Fri Jan 18 2008, 10:46PM

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Im new to da world of muc. i want to noe the know how of your circuit.... cud u please enlighten me..... thank u

Ajay

Sat Jan 19 2008, 11:49AM

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the circuit has a keypad, LCD and a controller..
what you did not understand in the circuit? what part is not clear to you.. please provide more details about your doubt.

www.rickeyworld.info
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sheryl

Sat Jan 19 2008, 10:27PM

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I have been told to prepare a project and explain it even before learining what a muc is.... that's how they teach us..... so if you have a ready-to-post abstract of the working of the project i would be very grateful because even though i cud get information on it, the time constraints bind me....

sheryl

Sat Jan 19 2008, 10:29PM

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Im a third year,6th semester, electronics and telecomm student.... i noe mups... muc is a new subject

Ajay

Sun Jan 20 2008, 12:23AM

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well i do not make any abstracts or anything like that.. but the working is simple..
for keypad and its working read the keypad tutorial
and for LCD read the LCD tutorial. Tutorials are located over here....
http://www.8051projects.net/microcontroller-tutorials/

it will give you complete working of keypad and LCD and the circuit consist of these components only... so you wont have any problem understanding the codes..

www.rickeyworld.info
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monsieur

Sat May 03 2008, 12:44AM

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give feedbeck on digi lock using lcd & keypad.. is it working on the first run

Ajay

Sun May 04 2008, 03:13PM

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yes its working.. in comment section you can see two people got it working on the first run. But Please construct your hardware very carefully. Normally hardware creates problem.

www.rickeyworld.info
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monsieur

Sun May 04 2008, 10:26PM

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@ajay
thanx 4 replyin .... sir m using 4x3 SPST switches keypad....... i made it my self . is it ok to use spst switches . also u dont mention ny datasheet of LCD tht ur usin. Which lcs shud b used

Ajay

Mon May 05 2008, 04:29PM

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LCD is general purpose.. 2x16 LCD alpha numeric.

and the reason i provided the keypad circuit is so that you can make it yourself. Try to run the hardware to see if its working. Make sure your connections are tight..

www.rickeyworld.info
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monsieur

Tue May 06 2008, 08:38PM

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sir thanx 4 the previous replies........ plz explain me the code of digital lock using keypad & lcd . in the LCD.C, y u made lockicon,unlockicon,ok,ex(the hex no. wht r they for).....