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Fake optical rotary joystick? *** DONE !!!
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abaraba:
I do not see any point of wiring buttons to it now since it may very well be easier to make real rotary joysticks instead, but I did discover I can make it spin by connecting A & B (loop1 & loop2) pins to +5v somewhat randomly. I guess a button circuit that will pass signal to one pin with slight delay would spin it, direction depending on which pin got the signal first.

In MAME it is default hack to have keys/buttons assigned to analog as well as spinner/trackball controls. The mystery remains why they categorize the later under "Analog Dial" since there is nothing analog about them, and why does analog displacement determines the speed of rotation and not actual position, i.e. 'degrees of rotation'.
Gray_Area:
I comes to mind a flight stick and spinner might be workable, though you'd probably wear your finger and thumb out on the trigger and thumb button.
Ed_McCarron:

--- Quote from: abaraba on December 04, 2010, 05:52:41 am ---Only now I understand this sentence:
- "Quadrature output?  More like the encoder on a mouse axis than the serial output."

That is exactly it, thank you Ed_McCarron!

--- End quote ---

Make a note, world.  I did something useful. :)

Glad it's working out.
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