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Contactless

 
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jo
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Contactless
PostPosted: Thu Jun 09, 2005 8:22 pm     Reply with quote
Hi, anyone have any idea on implementing contactless access?
From PIC -> contactless chip . Would the footprint of the antenna, building up of the protocol be very difficult as in to build from ground up?

any idea is appr. Thanks
ice



Joined: 30 May 2005
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PostPosted: Thu Jun 09, 2005 10:59 pm     Reply with quote
Quote:
From PIC -> contactless chip

Do you mean using RF..
isf thats what you mean ,yes you can,say from PIC to PIC or PIC to PC and vice versa

you get OEM radio modules like Ming and Radiometrix.

Quote:
building up of the protocol

You need to give serial data to the radios like the radiometrix.Some of them need to be given a Preamble at the beginning of a transmission ,so that the radios sync with each other.you can even include manchester encoding into your code.
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treitmey



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PostPosted: Fri Jun 10, 2005 7:48 am     Reply with quote
I don't know if this is what you mean,... but I have been looking into a interface to read a contactless credit card. also known as smartcard, BLINK, or paypass.

Some banks are implimenting these, and I want to suck a user name and address out of it. (but I won't be doing the credit tranaction).
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