Making robot motion with Blender is, if not easy, at least tolerable. We made a sample project, a 3-axis robot arm to illustrate. It has a non-moving pedestal, rotating base, upper arm, and lower arm.

It’s always annoying that Blender doesn’t do parametric ... Blending the two for that robot ocelot is always particularly annoying. CAD Sketcher lets the user make a ‘sketch’, a 2D drawing.