Adafruit PN532 RFID/NFC Breakout
These are the Eagle CAD files for the Adafruit PN532 RFID/NFC Breakout: ----> http://www.adafruit.com/products/364
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The PN532 is the most popular NFC chip, and is what is embedded in pretty much every phone or device that does NFC. It can pretty much do it all, such as read and write to tags and cards, communicate with phones (say for payment processing), and 'act' like a NFC tag. If you want to do any sort of embedded NFC work, this is the chip you'll want to use!
NFC (Near Field Communications) is a way for two devices very close to each other to communicate. Sort of like a very short range bluetooth that doesn't require authentication. It is an extension of RFID, so anything you can do with RFID you can do with NFC. You can do more stuff with NFC as well, such as communicate bi-directionally with cell phones
Because it can read and write tags, you can always just use this for RFID-tag projects. We carry a few different tags that work great with this chip. It can also work with any other NFC/RFID Type 1 thru 4 tag (and of course all the other NXP MiFare type tags)
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Designed by Limor Fried/Ladyada & Kevin Townsend for Adafruit Industries. Creative Commons Attribution/Share-Alike, all text above must be included in any redistribution