Joy Stick Breakout Module Shield PS2 Joystick Game Controller For Arduino

•  This is a two-way rocker 10K resistor, with the joystick in a different direction, tap the resistance vary. 
• This module uses a 5V supply, the original state X, Y readout voltage of 2.5V or so.
•  When pressed with the direction of the arrow, the readout voltage values with increasing, up to 5V; press the arrow in the opposite direction, the readout voltage reduction , a minimum of 0V.

This Joystick Module can measure position coordinates on the X and Y axis by moving the "hat".
It also contains a switch that is press-able by pushing the "hat" down. Similar to what is used in the PS2, XBOX controller.