An other GBC module using the Cardan Lift Mecanism.
Great Ball Contraption
A module of great ball contraption using scotck yoke system to up the balls and a spiral slide end.
A simple GBC (Great Ball Contraption) module to know the speed of a line of GBB.
A Lego Vertical Ball Clock, featured hours and minutes, powered by a motor and regulate by balls.
A simple but reliable mechanical slot machine.