I finally got around to doing a proper diagram of the Lego autopilot construction. I tried Google Sketchup using the public domain Mindstorms NXT objects, but before I could get very far Lego itself released all the Mindstorms NXT parts for its own much-improved Digital Designer 2.0. You just can't beat that for ease of use, so now you can have proper instructions. Thanks Lego!If you've installed…