I have created an animation with the Rigid Body. It is a simulation of a robotic arm. It is a 3D printable arm that I arranged in Blender. It works well for the constraints that have all the same direction (the arm itself).
But I am not able to add a constraint for the rotation. The rotation direction of the "normal arm" constraints is in the X direction, and the bottom plate is supposed to rotate about the Z direction.
I need a way to link the X-direction constraints to the Z-rotation. I can animate the two servo driven arms and the arm moves correctly, but I can't use the rotation, the arms don't rotate and the thing gets broken.