I love that you are building them based around servos. Whats your endgame here? Easier operation or are you going to do something like rig them up and cut the audio lines out of the films then build movement routines based around the clips so they move when the ones on the screen do?
The Tom Servo I built has triggers and each one initiates a different audio file recorded from the show. The motors are programmed to synch with that audio so that the mouth and head move in time with what he's saying. He's battery powered and his electronics all fit inside his body so it's a great cosplay prop and I've taken to PAX and a few other shows already... but he'll be even better once I finish Crow because they'll both be synched to initiate off a single trigger, thus they can "converse" back and forth with each other.
I have further plans to change them from manual triggers to audio triggers and load them with a full episode's worth of audio tracks so they can riff a movie with you, but that's way down the road.
