Velleman Vertex K8400 auto bed leveling add-on

With this add-on you can use Marlin's auto bed leveling feature on your Velleman Vertex K8400 3D printer.

In order to use this add-on you need to make several changes to your printer:

1. Print the STL's for the servo holder and the micro switch arm.
2. Solder a 2x9 PCB connector with a wire connected to the SS pin of the LCD.
This pin isn't in use by any components so we can hijack it for our purpose without soldering on the mainboard.
3. Mount the servo in the holder, solder some wire