(playful upbeat music)
- I have this axel
and am gonna put it in through the top of the eye.
Just far enough to get it in there,
and then am gonna put, right after that,
am gonna put a dura-collar on it.
So this first dura-collar is going to go between
the top of the eye and the piece of plywood.
If I can do this, there we go.
So, am gonna put that in there
and, okay so now it's through.
And now am gonna run this axle straight through
that brass tubing that we put inside the wood.
So that it goes down into the bottom area.
Right, so now it's through.
Let me see, there we go.
And now you can see it barely sticking out
of the bottom of that piece of plywood there.
And then am gonna slip on the next dura-collar
in between it and the bottom of the eye.
With any luck.
There you go.
So now that's through and then am just gonna continue on
and run this shaft all the way down
through the bottom of the eye.
And am just gonna hold them in place,
and I'm gonna tighten up these dura-collars.
Also known as shaft collars.
There's the top and now the bottom.
All right.
Okay, so there is the bottom one,
and right now since the shaft isn't glued you'll notice
that there is a little bit of up and down slop.
But when I eventually do put a little drop of super glue
in there to hold those in place
we'll get rid off that slop and then I can always go back
into the dura-collars and adjust them
up and down a little bit if I need to.
Right, so now I have that mechanism
on there for the eye horizontal
and this is where the little servo, consistency thing,
our little servo cycler came in.
There is like several types of these on the market.
I like this one, is not very expensive
and what it does, is that am gonna plug it in here.
One side you just plug it into a battery pack,
and the other side you plug it into your servo.
So there you can see the top one is a little 's' for single,
then the positive and the negative for the ground, okay?
And then on our servo wire, the yellow is the signal,
the red is the positive and the brown, or black,
depending on the type of servo is the negative.
So all I got to do is plug that in here.
There is actually room to put in three of these here,
but we'll just use for one.
And it has three different settings
and a little select button.
One is the manual setting so you can just move it
back and forth like this and see what the range is.
And let me show you something here, is like,
this servo is capable of going further
than the throw of these eyes.
So like, you hear that little clicking?
That's because it can actually go further
than the eyes are built.
And what I would do later on
is when I go into my software programming,
I will use the software to limit
the end throws of this servos
but that's a little ways out there.
Alright so, the best reason to use these things
is that I'll to the next, I'll push the button
and I'll go to the center setting
and this actually centers the servo, alright?
So this is really great, so when you are assembling
the servo on the servo horns you can pop this on
without having to resort to pulling out a transmitter
and a receiver and setting all that up
and putting that on there
and this is really just a great way to center your servo.
Last setting is the cycler and I'll, it goes there,
you can see where its going through farther than its reach.
And once again I'm going to control that
through the software later.
Cause that would be a really bad thing.
Cause this is going to wear out your servo
if you do that to much, alright?
It'll start wearing out the little disc that's inside.
There are little carbon discs inside these servos
and what happens is that carbon will get
rubbed off that servo and all of a sudden
the servo will start doing this all the time,
it's gonna start twitching
because it's hunting for that little spot.
But, once again so here it is,
I go to the center now it's all centered up
and am a happy boy and I can unplug it
and now I know that servo is center up there, alright?
So that is the reason for those
and I'll go ahead and attach the bottom
and here is the bottom,
this is just again, made from two pieces of plywood
that have been sandwiched together.
And one of them actually has the little arms on it
so that it can hold the servo on to it,
and the other side is double thick
so that I can mount these two pieces of brass to it.
Cause I wanted it to be fairly thick up here
to get this distance to match there between these two areas.
I wanted these pretty much the same, that thickness
and also the thicker they are the more stable,
the less likelihood it is
to wobble back and forth like this.
So I deliberately made that fairly thick.
So, alright, so I'll go ahead and attach this guy on here.
I used two, 8-32 socket head cap screws for this
with nuts on the other end
and I'll go ahead an attach these now.
We used a lot of, when I was working at Stan Winston,
we used a lot of 8-32 cap heads screws
and what we did to identify our little screw drivers
is we'd put blue zip ties on them so we could go right away,
you know, quickly put something together
so that nobody was waiting on us.
Because that was one of our things, nobody waits on us.
It happened, but we tried not to.
So I'll go ahead and attach that nut to the end there.
I won't tighten it all the way
cause I'll get the other one started out.
So these two pieces of brass are just sandwiching
onto this double piece of plywood down here.
So I'll get that in there.
Get it nice and tight.
Alright there we go.
So now we have this attached to the verticals.
So this is going to provide our vertical motion
for the eye, there, alright?
And then the way it's being run through
is this servo on the bottom.
And once again you can put this servo on the top as well
and in fact I would normally put this on the top
but like I said before there is just not enough room.
So you'll see on this servo I have added in a little
brass arm to give it a little longer throw
and once again I have these dubro socket head caps.
Rod bearings are here and I'll just pop this on.
There you go, and there we go,
there is our up and down servo for it.
And just for giggles I'll attach the servo cycler to this
as well to take a look at it before we go on.
Alright, there is one.
Here is the other.
And if I hold this here
you can see that this is controlling the up-down.
So I'll hold this like that for the vertical.
Lots of throw looking up and looking down.
And there is on the side again.
Alright, so there we have, once I go and hit the center,
it's already centered up
cause I centered it up previously.
And I can unplugged this and we can move on.