Build your own pen-plotter, for under $15
BrachioGraph is a DIY pen-plotter built from a Raspberry Pi Zero, a few $2 servomotors, plus household parts such as clothes pegs and bulldog clips… and controlled in Python.
An enjoyable side to the Ubuntu Summit was that unlike some of the more worthy events from the commercial side of the industry, here people were presenting their own personal passion projects. BrachioGraph is one of these, and was presented by its creator, Daniele Procida, whose day-job is director of engineering at Canonical.