Subject:
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Re: RCX underwater
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 18 Jun 2002 03:12:23 GMT
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Viewed:
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733 times
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From my post to Re: NY aqueduct tunnel inspector bot
http://news.lugnet.com/robotics/?n=17504 ...
The University of Rhode Island Oceanography
Undergraduate/Graduate Program entry to the 2000 International Autonomous
Underwater Vehicle Competion (AUVISI -
http://www.auvsi.org/competitions/water.cfm) won the competition with a
submersible whos engine was a LEGO RCX block! Yes they won the competition
with the LEGO Block.
If you are interested in their entry you can see the journal papers written
by them and the other entries here at
http://www.auvsi.org/competitions/2000/papers.cfm
A URI news article about it can be found here
http://advance.uri.edu/pacer/september2000/story5.htm
Ed
In lugnet.robotics, Dean Hystad writes:
> In lugnet.robotics, "Laura O'Grady" <l.ogrady@sympatico.ca> writes:
> > While searching around recently for information on ROBOLAB I found this URL
> > that lists available products for purchase. One that caught my eye was a
> > case, called waterproof housing, to use the RCX underwater (it is the last
> > item at the bottom of the page found at this URL:
> > http://www.teachers.ash.org.au/dbrown/robolab/availr.htm).
> >
> > Has anyone on the list ever used this? I would assume you would have to
> > encase the RCX, use the longest black wires with connector plates and build
> > your robot from there. But what value is it if only RCX can go underwater?
> > I would think that the motor could operate underwater unless it was
> > encased so why have the RCX submersed? Has anyone seen any robots built
> > using this thing? Thanks.
> >
> > Laura
>
> I remember seeing an ad in some Oceanography magazine for a LEGO submarine
> that used the RCX in a sealed housing. From the diagram (line drawing) it
> looked like it used different motors. I also remember someone using a
> submerged 9 volt geared motor. The motor should work fine underwater, but
> the trick is getting the water back out to prevent corrosion. I think that
> they sealed the shaft opening with petroleum jelly or something like that.
>
> Other things you could do with a sealed RCX is monitor sensors. Using a
> temperature sensor you could take water temp readings using your RCX.
> Temperature does not change uniformly with depth, but rather in identifiable
> layers. Knowing where the layers are is useful for finding underwater scaly
> creatures. I don't know if I would be comfortable lowering my RCX into the
> depths though.
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Message is in Reply To:
 | | Re: RCX underwater
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| (...) I remember seeing an ad in some Oceanography magazine for a LEGO submarine that used the RCX in a sealed housing. From the diagram (line drawing) it looked like it used different motors. I also remember someone using a submerged 9 volt geared (...) (22 years ago, 17-Jun-02, to lugnet.robotics)
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