This is experimental model. I have not refined it to perfections so if you wish to print it It can be hard to assemble.

If you print the skull. You should check carefully the print orientation. The back of the face should face upwards for best ressults and use tree supports.

I cannot provide instructions on how to assemble this or do the electronics. sorry about that :(

If you don't want to use any electronics the skull and jaw parts should work as a stand alone too.

More info and showcase on my project video: