How do you document your project's vision

Projects General Guidance
1

I have an entry in my blog discussing different styles to capture the vision of a project. It targets electronic hobbyists building personal projects. Besides the styles I documented in the blog, I am interested in understanding how other people come up and document the vision of their personal projects. See Capture Your Project Vision | Omar Francisco

2

There is an exhibition area here
http://www.arduino.cc/playground/Projects/ArduinoUsers

So you can see what Arduino users have done there.

3

I would capture the vision of my projects using this:-