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.

The "upgraded" robots, colored in various media and paired with a simple phrase or verse, include "Sparky Springbot," with pincers and slinkylike legs, and "Bakerbot," who has a small oven for a ...

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 ...