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Photo In, Sketch Out: Etch-A-Snap

Like any other camera, it snaps photos. However, its outputs are not photos, but sketches. Depending on the complexity of the photo, the developing time lasts approximately 15 mins to an hour. Still faster than film, though.

Photos are processed down to 240x144 pixel 1-bit (black & white) line drawings using “Pillow” and “OpenCV” and then translated into plotter commands by building a network graph representation with “networkx”. The Etch-A-Sketch wheels are driven by two 5V stepper motors mounted into a custom 3D printed frame. The Etch-A-Snap is entirely portable and powered by 4xAA batteries & 3x18650 LiPo cells.

Check the other video examples at Two Bit Arcade.

(Video Credit: Two Bit Arcade / YouTube)

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thanks :) there's a better example of it drawing here generated from a professional photo... it's very dependent on lighting, distance, etc. and hard to get right on a live shot with the Raspberry Pi camera
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