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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Mon, 17 Sep 2007 17:46:23 GMT
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Original-From:
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Mr S <SZINN_THE1@YAHOO.COMstopspam>
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Viewed:
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4448 times
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Not that I've tried it (of course) but it seems that if were to use the treads
with small paddles
attached, it would push the splashing part to the rear, give skid steering, and
sill provide good
propulsion, similar to the corkscrew idea. Chain drive from motor to the tread
drive sprocket
would give some good adaption (maybe) as you could gear up the RCX motors this
way. The
treads being only 1.25 inches wide or so would make for easy splash shielding??
Just a thought
built like a tracked vehicle (motors forward) with snap together treads on the
outside of the hull(s)
----- Original Message ----
From: Brian Davis <brdavis@iusb.edu>
To: lego-robotics@crynwr.com
Sent: Thursday, September 13, 2007 4:46:11 PM
Subject: Re: Serenity, an autonomous NXT-based boat
In lugnet.robotics, Steve Hassenplug wrote:
> At 12:40 PM 9/13/07, Claude Baumann wrote:
>
> > 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'd love to see more people try this. It's a little bit risky (usually, when my
programming skills fail the robot doesn't end up stranding in the middle of a
lake... or worse, on the bottom), but it brings up a whole new range of problems
and availible solutions. For boats, I'm curious abou the little outrigger hulls
off the "Speedboat" set (I never got one of those, and the sets don't seem to be
around over here any more... I'd have to order through S@H), as well as the big
hull from the City Harbor set (again, I'd have to order it, and justify the cost
to my family). Does anyone have one of these large hulls? Is there enough space
internally to hold the NXT, or any way to secure it (anybody got pictures of the
inside)?
> > Perhaps one could somehow use the powerful all-terrain
> > racer motor with battery pack. I'm not sure this is still
> > available.
>
> If you're talking about the Outdoor Challenger (8675)
> ( http://www.lego.com/eng/racers/products/radio.asp ) then,
> yes, he has one of those...
See, I always *knew* Steve was snooping around my collection. Oh, wait... his
puts mine to shame :-). In any event, he's correct, I do have one of those, but
the voltage is significantly higher, and ironically I have no way to charge it
(European charger with European plugs, and I've not spent the $40-$60 to get a
converter). With the higher voltages, odd connectors, etc., I'm not sure this
would actually make it easier, although it might be useful depending on how much
"other stuff" I end up grafting on.
--
Brian Davis
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Message has 1 Reply:
 | | Re: Serenity, an autonomous NXT-based boat
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| (...) It's a good thought - in fact, my first attempt was to use the front treaded "flippers" on LNE/Packbot so that Packbot could drive onto a "floatation frame", and either power or deploy its own "water tread" propulsion. That idea fell afoul of (...) (17 years ago, 17-Sep-07, to lugnet.robotics)
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