Bob Huston did a great remix of my neck by adding two side pistons which give some more degree of freedom to the InMoov head.
Since I travel a lot with InMoov, I constantly need to dismantle the head to pack the robot in the suitcases. For that reason I redesigned some parts to make it easy to remove the head with only 4 screws.
I also added a ring to be glued, this avoids the ball joint to pop out. (Shown on pictures with my index finger)
ArtNeck_NeckJointUpperV4 is also modified to fit InMoov head, and doesn't need to be sanded down on the edges. Bob's model was a bit too large and would hit the inside of the head.
The connection between the two servos is done the same than with the InMoov Stomach.
One servo master controls a servo slave.
See Stomach tutorial:
For more information on InMoov robot you can visite: