I had it all working – the controller was successfully running my two locomotives. I had the sound running and the horns blowing just by pressing buttons on the screen. Then something happened and everything went dark – I think the Arduino shorted across the programming track.
For about five minutes I thought I’d destroyed the Surface Pro 3 but luckily a hard-restart has brought it back to life.
So the next part of the plan is going to be figuring out how to mount all the component parts at the table so this does not happen again 😛 I’d love to bluetooth connect to the Arduino, but that’s going to have to wait until I can get another power supply to power it.
Power supply count is currently at two (one 14VDC for point motors and another 14VDC to power DCC)