As a bonus, it’s easy to swap out the pen, so multicolored designs can be drawn in multiple passes. We’ve seen other robot drawing builds before, too, like this capable portrait artist.

High School students from Grand Rapids, Kentwood and Flint are showing visitors to ArtPrize how to navigate robots they built that can draw, as part of free education programs.

The robotic turtle above can't wield katanas, eat pizza or shout cowabunga, but it can still do something awesome: draw big sand sketches on the beach. It's named "Beachbot" and was developed by a ...