Great write up.
I just heard something fly over my head, what were you saying?
Here’s the first one Google found for me. I’d love to see it implemented! Let me know if I can help, even though I never did figure out how to pass the ‘number of edges’ parameters to Sandify… ;(
I might have to start looking for an etch-a-sketch at thrift stores. I found some of the motors on ebay, but price is not much better. The motors are the only other thing I would need. You could probably make a simple plastic part in place of the wood. Thanks for pointing out this project.