The neck and the head have 7 DOF, 3 for the neck and 2 for each eye.
The whole system is runned by a raspberry pi.
Each eye has a USB camera built in.
This is the 4th ersion of the eye mount. The red part is 3D printed and is where the camera is attached to. The 2 blue bearings are connected through rods to the micro servos. The central bearings serves as the center of rotation to the entire eye.