Subject:
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Re: Shrimp, Lobster & more...
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 26 Feb 2001 09:33:46 GMT
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Viewed:
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688 times
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Like Xanthra47 wrote, there's still room for the first shrimp that can steer
:-)
On this topic I have some ideas. I would use the four central wheels like
tracks, blocking the inner ones in the turn (or slowing down them) while
keeping the outers at full power. This means some slippage is required but I
think it can work. The problem are the two front and bottom single wheels,
we really have to turn them to make turnings possible. Maybe two turntable
controlled by a single motor that turns them in sync (but opposite
direction)...
I also wonder what happens when SHRIMP tries and turns on a very rough
terrain or while over an obstacle.
Mario
"Ram Meenakshisundaram" <rmeenaks@olf.com> wrote:
> Oh no more competition on the shrimp :-( I thought I was going to build
> the first lego shrimp. Oh well, I guess I can learn from the other models
> and try to build a better one. Thanks for sharing it with us...
>
> Ram
>
> ----- Original Message -----
> From: "Xanthra47" <jmantor@nycap.rr.com>
> To: <lugnet.robotics@lugnet.com>
> Sent: Sunday, February 25, 2001 2:39 PM
> Subject: Re: Shrimp, Lobster & more...
>
>
> > More excellent robots ! Thanks for sharing, Mario : ) I'm sorta bummed
> > that you beat me to the LEGO(R) Shrimp, but I love your drive system and • you
> > did leave me some leeway to build a shrimp that can steer....
> > Xanthra47
> > "Mario Ferrari" <mario.ferrari@edis.it> wrote in message
> > news:G98x8C.887@lugnet.com...
> > > No, I'm not OT :-)
> > >
> > > SHRIMP is the name of a very clever high mobility rover developed by • the
> > > Autonomous Systems Lab in Lausanne, Switzerland. You can see it here:
> > > http://dmtwww.epfl.ch/isr/asl/systems/shrimp.html
> > >
> > > Months ago I made a Lego implementation of it, and only now found the • time
> > > to put it on my site:
> > > http://www.geocities.com/mario.ferrari/shrimp/shrimp.html
> > >
> > > Aragosta (in Italian means "Lobster") is the name of a Mini-Sumo (RIS • only)
> > > robot that I used in our last ItLUG robotic challenge:
> > > http://www.geocities.com/mario.ferrari/aragosta/aragosta.html
> > >
> > > Golia II is a more complex Sumo robot that features a 2 speed gear • switch:
> > > http://www.geocities.com/mario.ferrari/golia2/golia2.html
> > >
> > > Cinque is my latest multi-purpose platform: a Johnny Five style robot • with
> > > two RCXs, 5 motors, working arms/hand and more:
> > > http://www.geocities.com/mario.ferrari/cinque/cinque.html
> > >
> > > Your comments are, as always, very welcome.
> > >
> > > Mario
>
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Message has 1 Reply:
 | | Re: Shrimp, Lobster & more...
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| (...) The mechanism to steer these two wheels in sync would be a bit tricky, though, considering that the wheels are suspended independently. An easier and more flexible way is to steer the two wheels separately, but attach a rotation sensor to each (...) (24 years ago, 27-Feb-01, to lugnet.robotics)
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Message is in Reply To:
| | Re: Shrimp, Lobster & more...
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| Oh no more competition on the shrimp :-( I thought I was going to build the first lego shrimp. Oh well, I guess I can learn from the other models and try to build a better one. Thanks for sharing it with us... Ram ----- Original Message ----- From: (...) (24 years ago, 25-Feb-01, to lugnet.robotics)
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