I still intend to do this at some point, but as you guessed, I've been up to my eyeballs in the mkII design work. It's nearly finished, though, so fairly soon I should be able to do something along these lines.

I've thought of a few more things to add, as well, such as a 3-axis magnetic compass. Could be fun.

Patrick

Opinions expressed in this email may contain up to 42% water by weight, and are mine. All mine.