This is very cool. I might have the skills to replicate this but would never be able to accomplish it. My brain is warped .. to get motivated, I need the end result to be of some tangible value. Pure fun doesn't work for me, sadly. I am also unable to go and learn something just for the sake of learning.

Just an aside, an I realize efficiency is NOT a metric for your fabulous display .. here is another interesting mechanism. Maybe one could build a 10K or 100K display with this?:

https://en.wikipedia.org/wiki/Split-flap_display