Description
Adafruit PN532 NFC RFID Controller Shield for Arduino the perfect tool for any 13,56MHz RFID or NFC application. The Adafruit NFC shield uses the PN532 chip-set (the most popular NFC chip on the market) which is built into virtually every phone or device that does NFC. The Arduino library only supports reading/writing tags and does not support phone-to-shield communication, tag emulation, or other more advanced features at this time.
This shield uses I2C or SPI communication protocols. I2C is the standard, because it uses less pins: analog 4 and 5 are used for I2C (of course you can still use other I2C devices on the bus). Digital pin 2 is used for “interrupt” notification. The pi will give a low signal if there is a card, phone, etc. in range. You can customize which pin is used. It is also easy to change the shield to SPI where you can use any 4 digital pins by means of two solder jumpers on the top of the PCB. Compatible with all “classic” Arduino – NG, Diecimilla, Duemilanove, UNO – as well as Mega R3 or higher.
Delivery includes: an assembled and tested shield and header. Light soldering is required to solder the headers.
Adafruit PN532 NFC RFID Controller Shield manual and library at adafruit.com
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