Subject:
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Re: Trilobite
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 20 Feb 2002 21:46:08 GMT
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Viewed:
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1843 times
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In lugnet.robotics, elijah@tds.net writes:
> I really wanted the steerable shrimp to work out, it is so
> aesthetically pleasing as a design that it just seemed to the be
> Right Thing(tm). However, it required a LOT of motors, sensors etc.
> and if I geared it to climb it would only crawl along the rest of the
> time. In addition, it seems to me that whenever you put wheels at the
> end of pylons there is too much lateral force in turning for lego to
> handle very well (keeping a reasonable weight).
> After the Shrimp I tried a mars sojourner thing, but it had the same
> basic problems. So I decided to stop assuming I needed ground
> clearance and start addressing my basic requirements."Climb when
> needed, zip along when possible". the result is the Trilobite:
>
> http://personalpages.tds.net/~elijah/trilobite.html
>
> I am pretty happy with its abilities so far, however the sensor
> bumpers need to be redone.
>
> Incidentally, in the area of rechargable batteries I recently came
> across this:
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> http://www.imaging-resource.com/ACCS/BATTS/BATTS.HTM
>
> Even though this is an independent review I suppose since a Rayovac
> battery comes out on top appropriate disclosure requires I say that I
> also have recently become employed by Rayovac (as a programmer and I
> haven't even been to battery class yet so any battery knowledge I
> have is solely by way of supplying my son's toys). (and no, I can't
> get you a free case of 1600s :o) *I* can't even get a free case of
> 1600s)
>
> Elijah
Nice job on the trilobite!
About the batteries: I think your review reference is to NiMH type. I use
that kind in my digital camera (do you sense a 'but' coming?) BUT, I use
rechargeable mangnese alkaline batteries in my RCX. Available current is
lower but the voltage is closer to what the RCX expects to see. Actually,
Ray-O-Vac makes them too and I find them to be very good.
Jerry
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Message is in Reply To:
 | | Trilobite
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| I really wanted the steerable shrimp to work out, it is so aesthetically pleasing as a design that it just seemed to the be Right Thing(tm). However, it required a LOT of motors, sensors etc. and if I geared it to climb it would only crawl along the (...) (25 years ago, 17-Feb-02, to lugnet.robotics)
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