 Dual axis mini joystick
 Connects to your Arduino using male to male pin headers
 Comes with 2 colored push buttons
 The use of imported high-quality potentiometers and the PS button rocker. The rocker output an
analog signal is *to achieve vertical and horizontal control, which is attached to four keys at the
same time. It also has two *great circle button caps (cap color random round keys), a rocker button
and a reset button.
 The use of stack design is so that the plug can easily on Arduino Duemilanove or DFRduino Romeo.
 The reserved APC220/Bluetooth module interface is to facilitate the realization of wireless rocker
button controller.
 The remaining unused ports are extended out of standby.