Etch A Snap A Raspberry Pi powered Etch A Sketch Camera

EtchASnap is (probably) the worlds first EtchASketch Camera. Powered by a Raspberry Pi Zero (or Zero W) it snaps photos just like any other camera, but outputs them by drawing to an Pocket EtchASketch screen. Quite slowly. Photos are processed down to 240x144 pixel 1bit (black white) line drawings using Pillow and OpenCV and then translated into plotter commands by building a network graph representation with networkx. The EtchASketch wheels are driven by two 5V stepper motors mounted into a cus