I spend my days using a 3D animation package called Maya, and my nights building projects with Arduinos. Daniel Thompson is a visual effects artist who has combined Maya and an Arduino to drive a servomotor. My worlds just collided!
This post covers the scripts he used to do it. He has since built a Maya Python plug-in that is more accurate and can be keyframed. This is the really useful part, as it goes from being a very expensive 3D virtual knob to being a fully animateable animatronic system. I’d love to see if he can get it working bi-directionally, so that the servo can act as a go-motion controller for Maya.