Auto bed-level for Ultimaker

This is auto bed-leveling sytem for Ultimaker. It will also fit derevative printers like Joysmaker or Dreammaker.
The main idea is to mount z-min endstop to the print head. It will probe 4 points of the bed before the print. All moves will be transformed according the bed aligment. Servo serves here to lift the probe up during the print.

Watch how it works: http://www.youtube.com/watch?v=x8eqSQNAyro

UPDATE 16.02.2014:
Use new firmware version
https://github.com/Bevaz/Marlin/tree/Auto