parametric wind direction and speed indicator, anemometer wind vane

This is a parametric wind direction and speed indicator. It is designed to be printed easily without support. All the main parameters are adjustable in the scad code. There will be a customizer in the future (when thingiverse has solved the customizer problem.....)
Here is a short video to show the function: https://youtu.be/XbGgFsVUAxA

It needs in addition to the printed parts
- two 625 ball-bearing
- some washers
- and (in the unmodified version) an alu-tube 5,0 X 4,1mm with 28mm length.

There is some place for a PCB. In the future there will be an electronic to work as a sensor and maybe a generator to get rid of the driving batteries..

Uses http://www.thingiverse.com/thing:8931