LEGO TECHNIC : 10921


Technic / 10921	10920 \| 10922

Subject:	Pneumatic Inchworm
Newsgroups:	lugnet.announce.moc, lugnet.technic, lugnet.robotics, lugnet.build
Followup-To:	lugnet.technic, lugnet.robotics, lugnet.build
Date:	Sun, 6 Jul 2003 22:52:11 GMT
Viewed:	280 times

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 Kevin

Message has 4 Replies:

		Re: Pneumatic Inchworm
Doi! OMG - WOW! Must bring to Brick Fest. Must see IRL. Uggg, so cool! Really "Koogot", really. If you make the little Twins, I'll build the shell and we can have MOTHRA! Sorry, in rare form today. e (21 years ago, 6-Jul-03, to lugnet.technic, lugnet.robotics, lugnet.build)

		Re: Pneumatic Inchworm
(...) 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 (21 years ago, 7-Jul-03, to lugnet.technic, lugnet.robotics, lugnet.build)

		Re: Pneumatic Inchworm
(...) natural when inching away. Now you just need to add steering :-) -- Anders Isaksson, Sweden BlockCAD: (2 URLs) (21 years ago, 7-Jul-03, to lugnet.technic, lugnet.robotics, lugnet.build)

		Re: Pneumatic Inchworm
i like this worm after my vacations i'll back to developing :) br pixel (21 years ago, 7-Jul-03, to lugnet.technic, lugnet.robotics, lugnet.build)

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