Subject:
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Re: Serenity, an autonomous NXT-based boat
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 13 Sep 2007 14:28:41 GMT
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Viewed:
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4690 times
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In lugnet.robotics, Claude Baumann wrote:
> ...absolutely cool!
Thank you very much!
> I would like to attract your attention to a rather old
> Italian site (1999).
> http://users.libero.it/riccardo.rocca/roboat.htm.
> ...At that time a pioneer work!
Actually, there still seem to be relatively few robotic water-craft around, to
my surprise. That is an excellent project, and I'd not seen it. I'm also really
glad I did not have to go the same route as he did (that's a heck of a magnetic
compass sensor, for instance). I'd like to add a GPS unit to Serenity (or the
next version - there's not a lot of "tonnage unallocated" with only two LEGO
Fireboat hulls), BT connected to the NXT. This would seem a fun way to do this,
and having an established positioning system would be vital.
I'm not sure I have that quite a big lake, however - most places that size
around here, on a good day my little Serenity would get run over by some
motorboat. Perhaps it needs a flag to alert others, but then there's more wind
drag... Fun problem.
I'm not sure how long the little underwater motors will last - I suspect, driven
by only 1 AA battery, these are likely the first things to "power down" on a
long trip. I could get around this by using the NXT motors (geared faster
probably), but then I need to make sure the NXT itself has enough power... and
the fact that the web page you directed me to uses an exteranl Pb-acid battery
is not reassuring :-).
Long-term, I may have to hack a regulated DC power supply for the NXT, and have
more batteries on board.
--
Brian Davis
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Message has 2 Replies:
 | | Re: Serenity, an autonomous NXT-based boat
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| (...) You know, what I like most with your project is that is such a refreshing, new challenge, which - as you pointed out- surprisingly few people though of yet. So, this might become a completely exciting NXT robot section. I think it was in 2005 (...) (17 years ago, 13-Sep-07, to lugnet.robotics)
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Message is in Reply To:
| | Re: Serenity, an autonomous NXT-based boat
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| (...) Brian, ... absolutely cool ! I would like to attract your attention to a rather old Italian site (1999). (URL) Riccardo built a marveleous non-LEGO robot-boat equipped with electronic compass and GPS and travelling over the "Idroscalo Lake" (...) (17 years ago, 13-Sep-07, to lugnet.robotics)
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