Thread: My version of the 3 axis skull

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OK, this is a rough draft.
The vioce is Duza Beban... thanks go to him !
I'm using this tho get a feel for VSA, later on we will have our own script.

I don't have the eyes going yet.... wires were too short. When I extend the wires then I will have them run out the back and get my box shut up....

Hope you like it. Its my first attempt, but I'm loving VSA.

http://s146.photobucket.com/albums/r...t=103_1320.flv

Great job Lynn!!!! I can't wait to see what you do with him!!!!

very nice! yes it does look different than mine

That looks great!

What skull model is that ? The Lindenberg?
What Servos did you use?

Post some pictures of your mechanism on the inside!


I cant' wait to get started on my buckies, I had my servos sent to someone in the states who is bringing them up in a couple of weeks! Just couple more weeks! yay

Nice Job!

Good work with the motion as well. Looks pretty lifelike.......

except that it's dead.

Its a lindberg, and I used Halloween Bobs design on the skull..... the eyes are my own design... we'll see how that goes. I'm not the engineer that some around here are so I'm skeptical on them so far !

I used the 425bb servos for the head movement. The smaller ones for the eyes I don't remember right now.... I'll look tonight when I get back home.

Thanks for the support, couldnt have dont it without everyone here !!! I wouldn't have even dreamed it !!

A question? Did you purchase all the parts you needed for this? I believe some who've built these like Bob, have had things machined and I'd rather not have to go that route if possible and would like to be able to purchase parts ready to use, so to speak!

I made the parts, or rather..... my husband made them for me. He has a band saw, drill press and he's pretty handy. So, luckily I didn't have to PAY to have that done. One bracket was a little more difficult 'cause I didn't have a good way to bend it, so it was a little off center..... with some adjusting.... that worked out ok.

MrOct31, i found a nice simple way of adresesing the problem of machining parts.

I did this for two reasons, cost and time!

I went with Halloween Bobs method of the center point on a rod end and used available parts to make them work !

I've attached a picture below,

I started by getting my pivot point, it was 5/16 hole in the linkage piece so i used 5/16" Rod, which is definitely strong enough for the short distance

I went to the local HD and ventured into the plumbing aisle....I knew what i was looking for just had to find it.....What i was looking for was something to fit over a 5/16" Rod, through the hole and be super thin to allow maximum movement of the bearing

What I found was the INSIDE bushings from a "1/2" All Tube Union with Inserts" (Watts P# WCA-210 - Yellow Bag). These are the two brass pieces i was after.

They also have a nice knurled edge on one side which allows the nuts to hold them straight and firmly.

I used two nylon locking nuts so i wouldn't worry about the parts moving around on me

And lastly I carefully drilled and tapped the top of my rod.

The length of the brass pieces can be shortened if need be to lower the top screw for the movements...They can be shorted all the way until they are close to the brass bearing of the pivot point.

What I used for the spacer that allowed for max movement was a nut.... but the long ones that are used as couplers..... we then ground them down to the desired length and gave the end a steep angle... Then I didn't need a spacer. The nut tightened up to the rod end.