[EricH]

Originally Posted by jgannon

Why not? It's legal, and it will do all the trouble of decoding the USB protocol into analog voltages for the two axes. Then all you need is an adapter to go from gameport to three-pin headers, which is pretty much a ten-minute strip-and-solder job. You may have to buy the specific mouse that the Chicklet supports, but that is by far the easiest way to approach the interface problem... much better than trying to bit-bang.

They're trying to use the mice as position sensors on the robot, not as driving tools on the OI.