It’s a simple robot that drags a pen around to draw on paper ... The robot does a good job of plotting out a drawing on a small scale, with [Tim] using it to outline his name on paper.

An ordinary ballpoint pen is held in a spring-loaded carrier ... which uses Canny edge detection to create an outline drawing, then fills in the empty bits to create bright and dark areas.

Simply activate the drawing pen, and click and drag a rough outline of a simple geometric shape. This tool works with most 2D ...