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In lugnet.announce.moc, Kevin L. Clague wrote:
> I'm pleased to announce my latest pneumatic creature, an inchworm. Inchworm is
> much larger than an inch, but its body moves using a traveling wave like
> inchworms do.
>
> You can see the basic shape of my inchworm:
>
> http://www.brickshelf.com/gallery/kclague/Inchworm/p7020052.jpg
>
> It is composed of 6 pneumatic segments, four are always expanded, and two are
> always compressed. Over time segments are contracted and expanded in a
> coordinated fashion so the compressions move forward on the inchworm. Once the
> compressions reach the head of the inchworm, they move to the back of the
> inchworm and start the process over.
>
> The middle segments had a hard time bending the inchworm enough to get the
> pistons to close, so I added some extra pistons to make things work more
> reliably. The original design was 6 pistons and twelve switches. I had to add
> some more pistons in the middle.
>
> This image shows inchworm on its side:
>
> http://www.brickshelf.com/gallery/kclague/Inchworm/p7020057.jpg
>
> I have mpeg movies of it walking that play here on my local machine, but when I
> upload them to bricklink they end up garbled. I guess I'll have to wrestle with
> that.
>
> Inchworm is my wife's all time favorite MOC.
>
> PLMKWYT
Nice concept to model in pneumatics. I'd love to see the MPG when you get it
uploaded. I assume you implemented the compression with logic gates cascaded
along the body.
Brian
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Message has 1 Reply:
 | | Re: Pneumatic Inchworm
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| (...) I made the movies smaller and now they work. Here is the whole inchworm going through one cycle. (URL) is a close up of the compression part of the wave as it travels from the back of the inchworm to the front: (URL) my flight to Boston for (...) (21 years ago, 7-Jul-03, to lugnet.technic, lugnet.robotics, lugnet.build)
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