animatronic eye mechanics with adjustable eye distance

This thing is an extension of Thing https://www.thingiverse.com/thing:2781756. It uses many parts of my first 3d printable eye mechanics, but now eye distance and eye angle are adjustable in steps. Also single eyes are possible.

See the following video to see the thing in action: https://youtu.be/_HpukK3DjKM

This video shows how to mount the eye mechanics in detail https://youtu.be/U1c4R2EB83A

This how to setup the hardware: https://www.youtube.com/watch?v=I9sBTcGVVRQ&list=PLPYqY0GeaRxzm4E8Ogsm-ljlDMyqA4Rf5&index=4&t=11s

This how to operate the software: https://www.youtube.com/watch?v=9hyF8b8JamQ&list=PLPYqY0GeaRxzm4E8Ogsm-ljlDMyqA4Rf5&index=3&t=0s

See here what the thing is actually intended for: https://www.youtube.com/watch?v=Nz9rR9NwR7k

See https://bechele.de/?page_id=70 to see the electronic hard and software for this thing.

Update at Jan.1.2020: Updated hinge frame that does not require filing to achieve the maximum eye angle