The Arduberry is a simple and inexpensive way to bring Arduino shields to the Raspberry Pi. The device is a shield that slides over the Raspberry Pi and allows you to stack and use Arduino shields. The Arduberry requires no physical configuration to work with most shields. You can write Arduino sketches (programs) right on your Raspberry Pi.
This example will show how to use a Adafruit NFC shield to read an NFC card using the Arduberry.