About 10 years ago I was asking myself what I could do with the two stepper motors that I had learned to control.  No matter how excited I was over the potential of being able to precisely control motion, others remained relatively unimpressed at the sight of two motor shafts swiveling back and forth.   Easter was coming, and my kids were talking about egg-coloring-- suddenly I had an application!  My first motion-control device was built from junk parts and a few stolen pieces from my kids' toy chest.

We will be building essentially the same device, with a slightly improved design.

To begin, lets look at our assortment of parts: