Planning to build a Wall-e and thinking through some of the
mechanisms.

Haven't come up with a good way to get the arms, at the shoulder
points,
to move forward and down.

Pic: http://www3.sympatico.ca/doc/wall-eside.jpg

That dark band you see from top left to bottom right is supposed
to be the exterior track. In the pic it continues towards the bottom
left
to get a U shape but I'd be happy enough to handle just the L.

Thought about variations with racks/pinions and such but my best idea
so far would
be something like a side mounted gantry inside the box. And prolly
need one for
each side.

Somehow this seems like overkill.

Any other ideas?

Tanks,
DOC


Have robots. Will travel.
www.robot-one.com

wrote:

Planning to build a Wall-e and thinking through some of the
mechanisms.

Simple, Powerful, Tested!

http://www.global-b2b-network.com/di...eer_Loader.jpg

--Winston

Wall-e by any other name. :-)

In this case they call it an HT-50. And the right color scheme to
boot.

But the shoulder pivot points are fixed. And for that
matter it's the same for the animatronic mock ups that I have seen.
Just
sometimes the arms come out of the body at different points.

Seems like a challenging idea to be able to vary this dynamically.

Tanks,
DOC


On Jul 10, 11:42*pm, Winston wrote:
wrote:
Planning to build a Wall-e and thinking through some of the
mechanisms.

Simple, Powerful, Tested!

http://www.global-b2b-network.com/di...81/Skid_Steer_...

--Winston

On Fri, 11 Jul 2008 03:42:03 GMT, with neither quill nor qualm,
Winston quickly quoth:

wrote:

Planning to build a Wall-e and thinking through some of the
mechanisms.

Simple, Powerful, Tested!

http://www.global-b2b-network.com/di...eer_Loader.jpg

Yeah, that's even better than a base D-9.

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VIRTUE...is its own punishment
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wrote:

Wall-e by any other name. :-)

In this case they call it an HT-50. And the right color scheme to
boot.

All the hard stuff is done. Just rip out the manual controls
and substitute servo hydraulic valves. What more could one want?


But the shoulder pivot points are fixed. And for that
matter it's the same for the animatronic mock ups that I have seen.
Just
sometimes the arms come out of the body at different points.

Seems like a challenging idea to be able to vary this dynamically.

Yup! I ain't no physics maven but it strikes me that shoulder joint
is the pathway for *a lot* of force. So it's best kept rigidly pinned
to the chassis.

--Winston

Larry Jaques wrote:

On Fri, 11 Jul 2008 03:42:03 GMT, with neither quill nor qualm,
Winston quickly quoth:


wrote:


Planning to build a Wall-e and thinking through some of the
mechanisms.

Simple, Powerful, Tested!

http://www.global-b2b-network.com/di...eer_Loader.jpg


Yeah, that's even better than a base D-9.

Better gas mileage, anyway!

--Winston