I want to build a stepmania machine. There's a lot of issues with this, but I want to focus on ths physical part of the pad first. I want to build a pad that looks and feels similar to that of a DDR ...
A while back (probably over a year and a half ago) I saw a home built DDR pad that was over 3" thick, and closely resembled an arcade pad. It used regular sized light bulbs for lighting.