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I really want a force-feedback x/y-controller. I built a prototype of a slider and it worked quite amazing at emulating physics.

I'm now thinking about building a passive x/y controller with responsive breaks: I's super hard for motors and rails to actually push against a human arm with some force, just clutching a break should be able to counter quite a bit of strength though. I'll just have to be a little creative on how to make tough pressure sensors on the handle.

So I'll have: one knob on a flat pane, pressure sensors measuring what force goes in to the knob, optical encoders to know the position of the knob and 2 or 3 motorized breaks that adjust for the correct counter-force. It should be quite easy to simulate a guitar-string that than flings away, I just can't emulate slow relaxation of the "string".

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