I just got the test boards from the PC fab house. There was 1 surprise, but wasn't hard to figure out. I'm trying to have some to show and sell in Carlyle this weekend.
It mounts in any piece of rolling stock you like. A magnet sensor goes on one of the trucks and the display goes any place you like. The thing is powered by 2 AAA batteries, which should run it in excess of 100 hours.
How far have you gone?
I've been using an "xProtoLab" from Gabotronics as my oscilloscope for some time. It's made to be plugged into a breadboard, but since I use smd devices, the breadboard was getting cumbersome. So I decided to put it in a case.
So I took an old-style Altoids™ tin with a flat lid, etched "Gallifreyan" writing into the lid, and installed a little circuit board with a 5v boost converter to power it from 2 AAA batteries.
I have it on good authority that the Gallifreyan translates to "Mine! Keepa yous hands off!"
Travel by TARDIS.