SketchUp
Google SketchUp offers a useful way to create 3D models and has a very simple user interface. Models can then be inserted into Google Earth. I spent some time playing around with the UI and ended up creating a model of the Arduino Extreme prototyping board. Carlyn Maw and Tom Igoe have some really nice illustrations on the Arduino website which show the connections necessary for a Shift Register output (to increase the number of outputs that can be addressed). I thought it might be nice to make something similar using SketchUp. It has additional nice features such as a style palette, whichallows you to output relly nice tidy lines (as in CAD drawings) or really appealing sketched representations:
If you want the arduino SketchUp model, it’s here: Arduino Extreme model (820k).