Subject:
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Re: Mindstorm to control a train?
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 3 Apr 1999 03:34:00 GMT
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Original-From:
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Peter Hesketh <pbh@phesk.demon.co.+AvoidSpam+uk>
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Viewed:
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983 times
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In article <F9LD4J.Cr6@lugnet.com>, Jim Knepley <jknepley@chisp.net>
writes
> I got myself a Mindstorm last christmas.
> My wife got herself a train last weekend.
>
> I can't resist the urge to control the train with the Mindstorm, but I've
> hit a snag. As I can't possibly be the first one to think of this, I'll ask
> y'all for advice. :-)
>
> It's a problem of power. The RCX seems to have two useful speeds for the
> train, so-slow-it's-not-actually-moving-but-I-can-tell-it's-trying, and
> way-too-fast.
>
> This is the difference between power 0 and power 1...
>
> All of my other technical hurdles I've cleared, and the Mindstorm can stop
> and unload the train will near perfect reliability, but I basically have to
> push the train around the track as power 1 is too fast.
>
> Any ideas?
Connect two power diodes back to back in parallel, and wire them in
series with the train. If still too fast, put another pair in series
with that. If still too fast, repeat again until OK. This will drop
the voltage supplied to the train.
--
Regards - Peter Hesketh, Mynyddbach, Mon.
Forty reasons why a dog is better than a woman: number 36
"Dogs enjoy heavy petting in public."
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message is in Reply To:
 | | Mindstorm to control a train?
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| I got myself a Mindstorm last christmas. My wife got herself a train last weekend. I can't resist the urge to control the train with the Mindstorm, but I've hit a snag. As I can't possibly be the first one to think of this, I'll ask y'all for (...) (26 years ago, 3-Apr-99, to lugnet.robotics)
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