This is a simple module! It outputs a voltage set by the wheel. The range of the CV is determined by the Range control from one semitone to one octave, or from five semitones to five octaves. When the wheel is resting in its middle position the output is 0V, then going positive or negative.
Unfortunately there are no building instructions for this module, but at least you'll find the schematic, some photos, and some comments.
That's it! Have fun and make some gliding CVs!