Oh...
Would love to see the mechanics of how that was done and how the programming was done as well.
Any pic, video of what the system looks like.
I can visualize several different ways to accomplish that movement with servos, steppers, etc. I'm actually impressed at the price level for mass market. I'm sitting here looking at a controller that cost around 3k alone. But it will run 4, 8 axis servos... As for the code to run those. really simple, timer & a random number call for position.
I guess the real question is if I can make them cheap enough to make them affordable to an average person.