I have attached links with my completed project. I know still have a few things to fix on this
project as listed below. I hope this is
sufficient to count as completed homework.
I have learnt a lot along the way and am looking forward to making a
fully functional head with skin. This
project started out as a generic face, but I may end up foam fabricating a
snowman’s head as a “skin”. I am
controlling the movements with a radio controller as I do not own a
computer to hook the servos to.
I cast this out of Smooth on 300 series resin.
I was leery of introducing fiberglass into my house as my work station
is my dining room table! I was pleased
with how this came out for my first attempt.
It machines really well and seems to be rigid enough not to deflect from
the servos. You cannot put too much heat
in it while machining or will start to become soft. I have a few minor interferences with the
face plate that I need to sand down. In
hindsight, I wish I had left more of a forehead or top of the skull to run my
eyebrow wires along.
Eye movement Up & down
I mounted the pushrod for the up and down eye movement under the left eye. This made the right eye seem to sag a
bit. I would like to add a second servo to
push under the right eye. I can link the
left and right servos to the same control with a “Y” harness that way, they
will move in tandem.
Eye movement Left & Right
One of my eyes does not move the right as well as it moves to the left. I need to increase the length on the linkage
that reaches from the eye to the ball link.
I also need to update the linkages to be perpendicular to each other (or
more precise right angles to each other).
My jaw is lopsided! I ran out of 2-56
ball end connectors and had to improvise.
Not only did I run out of them, so did my local hobby shop! I am waiting on an order from Amazon to
arrive. I left a wide gap for lips and
teeth. It seems like almost have too
much movement on my jaw. It does seem to
have the ability to close too far and create an overbite effect. I also created channels in the backside of
the jaw and faceplate in the event that I chose to add a skin and lip movement.