Gotta take a break from this to earn some money, but this is where I'm at:

So far, I've got steppers, DC servos, RC servos, WS2812B LEDs, Canon EF lens modules all working - plug as many or as few of em in as you need, use Blender 3D to animate them, then play it back out here in meatspace. This will not be its final form (!). Ultimately it'll be open source but not for a bit (you don't want to see my code. You really really don't)

One Teensy was harmed in the making of this film. Even with nothing connected to it, it heats up when I plug in the USB lead and doesn't do much else... 5 other Teensy LCs surviving the abuse though, yay