The Joystick Shield sits on top of your Arduino and turns it into a simple controller. Five momentary push buttons (4+ joystick select button) and a two-axis thumb joystick gives your Arduino functionality on the level of old . The momentary push buttons are connected to Arduino digital pins 2-6; when pressed they will pull the pin low. Vertical movement of the joystick will produce a proportional analog voltage on analog pin 0, likewise, horizontal movement of the joystick can be tracked on analog pin 1. This product is only the Joystick Shield PCB - you'll need to purchase the buttons and joystick separately, and assemble the controller yourself. Here's what you'll need in addition to the shield: Project description, more information and ordering can be found at https://www.sparkfun.com/products/9824 Momentary Push Button Switch - 12mm Square: http://www.sparkfun.com/commerce/product_info.php?products_id=9190 Thumb Joystick: http://www.sparkfun.com/commerce/product_info.php?products_id=9032 Mini Push Button Switch: http://www.sparkfun.com/commerce/product_info.php?products_id=97 6-pin Arduino Stackable Header: http://www.sparkfun.com/commerce/product_info.php?products_id=9280 8-pin Arduino Stackable Header: http://www.sparkfun.com/commerce/product_info.php?products_id=9279 Arduino Sample Sketch: http://www.sparkfun.com/Code/Joystick_Shield_Example.zip