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digital code lock with lcd and keypad
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Moderators: Ajay, Junied , abbas1707, Arun Kumar V, pdi33, Shailesh NAYAK, ۞ TPS ۞, shyam, sashijoseph
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Ajay
Wed May 07 2008, 02:52PM
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when you run the program you will come to know.
lockicon, unlockicon, ok and ex are arrays to create custom character for LCD. Just check the LCD tutorial for how the hex values are calculated.



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monsieur
Thu May 08 2008, 04:22AM

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23.jpg

sir, i hv used the switch(shown in red circle) for making the 4x3 keypad.......... is it ok to use these... wil it work
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Ajay
Thu May 08 2008, 04:55PM
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if its a push button then it will work..
i.e. if you press button, it should not stay there.. it must come back to normal position after release.

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monsieur
Thu May 08 2008, 08:50PM

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hi sir........... thanx 4 replyin so quickly. its great.
sir actually in the lab we hv a controller board(made by advanced technology). its got faullty. now our evaluation is on thursday. so we hv to show it on KEIL.So we did it... but we dont know wht to enter in the ports at which iinstant as algo. of this program is not clear to me. So plz tell me the steps to simulate it....... so tht Sir wil be convinced tht i hv understood the program and its working..
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Ajay
Fri May 09 2008, 02:48PM
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its very hard to simulate it in keil.
you need to enter key with row and column combination. I cannot explain this coz its not easy to explain even.

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monsieur
Fri May 09 2008, 10:59PM

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wht 2 do.................then
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sashijoseph
Sat May 10 2008, 10:28PM

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If you have access to a 2051 programmer,just build the circuit.Would hardly take a couple of hours and a couple hundred bucks.

Let there be music........
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Ajay
Sun May 11 2008, 04:29PM
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finish the circuit, burn the program.. and run it.. Project Done

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electronicfreak
Wed May 21 2008, 02:04PM
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anybudy help me about reading contents of LCD.......
my project is digital lock.....

SACHIN
http://belgaum.myminicity.com/
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Ajay
Thu May 22 2008, 12:46AM
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what kind of lcd content?

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