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Old 18th January 2008, 05:56 AM   (permalink)
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Quote:
Originally Posted by mytech
Before feb. end...
Also i'm new to pic..
What microcontroller do you have experience with? What sort of circuits have you built in the past?
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Old 18th January 2008, 06:58 AM   (permalink)
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Sorry not yet built any circuit using microcontroller..
I am on it.. right now started studying it.. thats why i asked available ICs..
Can you tell me little more about keeloq.. thanks
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Old 18th January 2008, 07:17 AM   (permalink)
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Two months to design and submit your design, with no prior microcontroller experience. No real idea either, you're still in the planning / concept stage.
Did you read the Keeloq documents on Microchips site, or try google "keeloq"?
We don't know where you're located, can you readily buy components?
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Old 18th January 2008, 08:57 AM   (permalink)
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Thanks for you kind reply,
Actually we already planned everything..
And i have experienced with some ICs but not with pic..
Like i have done lots of mini projects..

This time for DTMF i thought of using KT8870 and UM91214B..
I asked any other better ICs for this application...
I know pic is a perfect solution, but i hav little afraid bec. i hav to submit within 2 months.. And For me not necessary to complete project using pic... Due to these reasons only i asked available ICs..
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Old 18th January 2008, 09:29 AM   (permalink)
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Are you saying that you actually have a source for those obsolete chips?
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Old 18th January 2008, 06:37 PM   (permalink)
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Yes i hav both the chips.. Is there any better IC than those?..
Also i need encrypted rf transmission technique..
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Old 18th January 2008, 08:48 PM   (permalink)
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Sure plenty of better ways to do it. But since you've got those ICs you might as well try to use them. Good luck.
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Old 20th January 2008, 06:11 PM   (permalink)
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Quote:
Originally Posted by steev
Didn't know it was so cheap to leave a cell phone connected to your door.
So anyone who knows the phone number could open the door?
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Old 21st January 2008, 08:02 AM   (permalink)
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well i planned to use it for some device control etc.not for security stuff.

i build it yesterday,but it dosen't worked.don't know why.
that circuit he got is meant for another chip.
http://www.members.tripod.com/electr...lsimages/2.gif
but he used CM8870 instead.is it ok?
shld i do some changes in the circuit?
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Old 9th March 2008, 06:02 AM   (permalink)
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i am studying BE(EEE) i like to study embedded system which is the best center at coimbatore?send to email-ssk.saravanan08@gmail.com
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