About this 3D model
This is a simple servo controlled animatronic eyeball that uses 2 servos. The eye can look left and right and the top eyelid can open and close. you can drive 2 eyeballs with a servo Y cable. The servo control arm for the eyeball can slide onto the main shaft or plugged into the back of the eyeball itself as shown in the snapshots. Video: https://www.youtube.com/watch?v=N3nVzMHAsCs&feature=youtu.be