You can pick one up for $160 at Walmart.com!
http://www.walmart.com/catalog/product. ... id=9107831
I now want to hax up my own version (I only need to hack into 2 old ball mice for the encoders, 3 mice could make 2 of these.)
I just need to figure out what to use for the joints, I need at minimum 6 joints constrained to only move in 2 planes (and of course the 3 rotary encoders)
I don't have to have the feedback, just the 3d control would be awesome.
I am betting that this is only 3 degrees of freedom (no rotation, only sliding), but I wonder if I put a rotating control knob/stick on the end I could add a couple axis pretty easily. Or simply use one with each hand to gain the rotation axi'.
CAVE, see what all the fuss is about: