This number sends a pulse to the Arduino, which in turn tells the servos how far to move. A joystick typically has have pins: VRx (the x-axis signal), VRy (the y-axis signal), SW (a pushbutton we ...

The article gives an Arduino pinout and the program used to drive the monitor with very detailed comments. Although this hack is by no means a finished product, the now blurry test pattern seen ...