Ok some progress as you can see:
So the work starts on getting these controllers finished so I am not resorting to performing with circuit boards in a cardboard box. 16 Stribe boards, one powered USB Hub and two Arduino controllers with a Curiousinventor shield/multiplexer per controller so its logically and physically 2 x 8 Stribe Faders.
I've made this very strong as I intend playing live with it. The only thing I need to return to screw wise is rubber grommets under the USB card and Arduino. Here half of the Softpot touch sensitive faders are in place with the other half waiting to go.
A portrait of the artist geeking out...
Assembled but not yet completed... or tested... Fortunately the recesses for the faders line up. The edge will have a perforated stainless steel strip. In the meantime I am making a Power supply to fit in the space provided next to the USB port. Might as well make it universal 110/240v -- with locking IEC socket.