RepWalker add on Eyes RA01

by Dampfboot, published

RepWalker add on Eyes RA01 by Dampfboot May 13, 2014
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This animatronic eyes where inspired by "Dasaki Compact Animatronic Eyes" here on Thingiverse. I changed all dimensions and the layout to make it a little more compact and flat at the nose (it was already a great design), easier to print on my RepRap printer with a layer height of 0.5 mm and to assemble it on top of my RepWalker Mutant RA04: http://www.thingiverse.com/thing:326191


RepWalker and the BT software are derivatives of the Shellmo Open Source Project: http://shellmo.org


The design height of all parts is 0.5 mm. Therefore you should print it with a layer height of 0.5 mm (with your RepRap 0.5 mm nozzle - set the width to 0.6 in KISSlicer) with 0.25 mm layer height (on your MakerBot) or with 0.125 mm if you have too much time...

If you have a not so good calibrated RepRap you should print the parts #01, #04, and #05 in the given orientation. This avoids even with a miss calibrated printer that "you" will look cross-eyed. As a suggestion I set up the #00-long-parts tray.

The #07-eye-ball and the #08-pupil has to be printed twice. The rest of the parts are unique.

If you like to hide the mechanics please print it in black. Afterwards you can also blacken the screws, the white servo parts and the wires with an permanent marker.

The pupil can be printed in white and colored as desired. It will be glued to the eyeball. Take double sided tape for your first tests and use some super glue or Acetone - for ABS - to mount it forever.

The structure is held together with M3 screws wich are screwed directly into the platic without nuts. The servos need M2 screws - also without nuts. I used "mini" servos from HobbyKing with a base flange mount of 23 x 13 mm.

The blue parts in the pictures above show a slightly older design but demonstrate how to assemble the eyes quite well.

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I really like this design for many reasons, main one being I wanted to make something small, compact and efficient and came up with a sketch that is very similar.

I had to decide... do I need both eyes to move interdependently? If "no" then it simplified the problem a lot.

The other thing was to have all the mechanisms at the back so other props can be added at the front. Not to be over engineered!

The left/right movement was not too hard to envision but like me it seems the up/down involves tilting a whole section up/down which works well if the pivot point is central to the eyes. This saves the eyes themselves having the 2 axis of movement each and simplifies it.

As long as the 2 eyes basically rotate in the same region (which they seem to) I'd be hoping adding eyelids should not be too hard.

Great demo as well, would be awesome with some of those realistic eyes (another project).

Only the #07-eye ball and the #08-pupil has to be printed twice.

This looks great! The bluetooth demo was too cool! My only question is are there any parts besides the eyeball that need to be printed twice?

All you need, now, is to put an ultrasonic sensor in the eyes ;)