I've been sneaking in a few hours here and there to get the electronics mounted.
Here you can see the batteries, contactor, two power switches, the 5 volt DC/DC converter, and the Netduino 2 (unmounted). One switch is a momentary switch to turn everything on and off. I'll use the Netduino and a transistor to keep the contactor on after the momentary switch is pressed. That way I'll be able to turn the skateboard off via software. For example if someone stopped riding it without hitting the switch again, I'll be able to determine inactivity and power everything down.
The second switch is an inline SPST that will disable the contactor physically. You never know when something will catch on fire, or you have a bug in the software that won't allow you turn the electronics off in a timely manner (usually discovered when the skateboard is on fire).
Here's the motor and OSMC installed and wired up. I still haven't run a cable from the OSMC back to the micro-controller. I'll do that once I have the micro-controller mounted and the custom shield installed.
Next is a picture of the contactor, batteries, switches, and DC converter wired up. It's turning into a bit of a rat's nest, I'm sure I'll have to move wires around to get everything happy in there. In the background is the Netduino with a custom shield for the original skateboard. It was test run to see if I could get a much simpler board printed without missing anything. It's the first one that I've done, I wanted a little practice before the much more complex shield that I'll be using on the new skateboard.
I imagine progress will slow down a bit at this point. The next big thing to do is finish the design of the Netduino shield. I have a first pass done, but need to go back and make a few changes, double check what I did a few months ago, etc. As I go through that process, I very well may post some questions. I'm a almost a complete newb when it comes to that kind of stuff.