We were looking at the servo driven marble maze projects over on instructables and thought we would try our own. We found nimaid's great maze generator here on Thingiverse and decided we could do the whole project with the 3D printer.

You can see how we built and programmed the maze over on our Instructable http://www.instructables.com/id/3D-Printed-Maze-Controlled-by-Your-Android-Device

You will need 1x maze_generator08 (or make your own by following nimaid's work) 1x maze_base_arduino 1x gimbal_base_arduino 2x gimbal_center 1x gimbal_base 2x servo_wire_keeper

Here is a short video https://youtu.be/0e0W5RPVfyM