Old 10-26-18, 06:54 PM
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
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slip rings are still very common in signal transmission, although growing less common now due to wireless. But for power, I don't see slip rings going away any time soon. My hesitation with the slip ring idea is that I'm worried about reliability. Don't want to find out my tail light isn't working. No way I'm going to an inductive coupling scheme, which seems to be the current wireless power transmission scheme of choice.

I think this can be done with a normal size vent hole if you use the Hirose/Clay method.
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