Chris from Pyroelectro is now experimenting with adding a new dimension to this robotic face, an animatronic neck:
Having already built the eyebrows, eyes and mouth for our animatron, the final step will be to affix it to a neck so that it can rotate left and right, and tilt up and down. This means two more servos will be needed to further actuate the animatronic head. After finishing this tutorial, your animatronic face will be complete!
Via the contact form.