Sei had two things: a bare wall in their apartment, and a tendency to (their words!) “waste money on useless electronics” — and thus Plotbot was born.

Powered by a Teensy 3.1 and a pair of Nema 17 stepper motors with SilentStepStick TMC2209 drivers, the system uses an extruded aluminum frame and arms in conjunction with a system of pulleys to drag a pen over a large sheet of paper, creating the desired drawing.

More information can be found on the project’s Hackaday page and GitHub repo, with a quick demonstration in the video below.