I want to place a sensor or two on a rotating wheel, but I want the electronics to process the sensors off of the wheel. Can someone tell me how people wire up multiple electrical contacts through a bearing or to a rotating sensor? Obviously, I can't use normal wire or it would get all twisted up.

Electrical connections to a rotating part?

system May 24, 2010, 1:25pm 8

Essentially the same as Grumpy_Mike's (for a bigger scale):

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