Promising review: "The Aquapaw was my best purchase this year! I have a Flat-Coates Retriever so her fur is really thick. The ...

Plug the RFID module into the breadboard with enough space around it. Connect the VCC pin to the Arduino's 3.3V (not 5V), and GND to the ground rail. For the data connections, wire SDA to Pin 10, SCK ...