Subject:
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Re: Pneumatic 6 legged walker
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 3 Feb 1999 19:51:40 GMT
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Original-From:
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B van Dam <BVANDAM@WESTBRABANT.NETspamcake>
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Viewed:
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1066 times
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Yes, several people have made the same comment regarding the avi. It was an
avi when I made it, but then it was over 4.5 Mb. Even with intell
compression it was stil 1.7 Mb. and I only have 5Mb for my entire website
available. So I compressed it with a special program that came with my
webcam that turns it into an exe with viewer built in.
I've juist mailed the intel compressed avi to Alex Wetmore who is
considering putting it up on his website so all non-windows users can view
it too. I hope that Linux allows intel compressed avi's....
Do you have pictures of your pneumatic walker? Is it strong enough to carry
a Cybermaster unit?
CU Bert
Visit my site on Lego, Robot's and Visual Basic at
http://home.concepts.nl/~bvandam/index.html
-----Oorspronkelijk bericht-----
Van: Fredrik Glöckner <fredrik.glockner@bio.uio.no>
Aan: lego-robotics@crynwr.com <lego-robotics@crynwr.com>
Datum: woensdag 3 februari 1999 8:47
Onderwerp: Re: Pneumatic 6 legged walker
> lego-robotics@crynwr.com (B van Dam) writes:
>
> > For those of you interested in pneumatics I've finally completed a
> > pneumatic 6 legged walker.
>
> The idea to use feedback loops to make walkers is a good one. I've made
> a similar 6-legged walker using only three large cylinders and three
> valves. This uses a triple-gait-cycle mechanism, meaning that one
> cylinder moves the left legs back and forth, one cylinder moves the
> right legs back and forth, and the last moves the centre legs up/down.
>
> Of course, you need a three phase feedback loop in this case, unlike the
> model you made, which has only two phases.
>
> 1 3 1
> \| | |
> #####-
> /| | |
> 2 3 2
>
> 1: right legs
> 2: left legs
> 3: centre legs
>
> Compare with a CyberMaster based hexapod for more description of how the
> triple-gait-cycle works:
>
> http://www.math.uio.no/~fredrigl/technic/cm-hexapod/
>
> Unfortunately, this page is down right now, but hopefully it should be
> up again in a few hours.
>
> > Included on the page is a small .avi so you can see it walk.
>
> If it is an .avi, why does it have a .exe suffix? If it _was_ an .avi,
> I could have played it on my Linux system, but the .exe I cannot use.
>
> Fredrik
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 2 Replies:
 | | Re: Pneumatic 6 legged walker
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| (...) Its at (URL) I wasn't able to view it using the default media player on NT 4, but hopefully it'll work for others. alex -- Did you check the web site first?: (URL) (26 years ago, 4-Feb-99, to lugnet.robotics)
| | | Re: Pneumatic 6 legged walker
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| (...) No, I'm sorry, I don't. It was just a quick sunday evening project, and I didn't even make a model which had a compressor built in. But it is rather easy to make one. First, you need to figure out how to make a suitable three phase feedback (...) (26 years ago, 4-Feb-99, to lugnet.robotics)
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