[Tom Line]

I strongly recommend against mounting electronics to sheet metal.

With all the things that can go wrong on a FIRST robot, why wouldn't you take all the easy precautions you can?

Mount on lexan, corrugated polycarb, foamed pvc, plywood, composite (not carbon fiber, as it conducts). Use nylon bolts with nylon thumb nuts. Run wiring in convolute, anti abrasion sleeve, or plastic channel where possible. Avoid running wires inside inaccessible places like towers, arms, etc.