A drawing robot powered by two Arduino driven stepper motors. It can take a standard photo or vector image and convert it to code that can be drawn by the machine. Mine is currently set up to draw images as large as 24”x36”, however you’re only limited by the size of the wall or board that you mount it on. If I recall correctly, the drawing shown above took about 14 hours to finish. I built mine based on Sandy Noble’s Polargraph project, which you can read more about here.
I made my own font! What it lacks in legibility, it makes up for in soul. Believe it or not, you can actually buy this masterpiece here.
I originally built two of these for a packaging design class in college, I eventually revisited the project and made a whole series.