Subject:
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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 02:17:50 GMT
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Viewed:
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1008 times
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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 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?
Regards,
Jim
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Message has 2 Replies:
 | | Re: Mindstorm to control a train?
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| In article <F9LD4J.Cr6@lugnet.com>, Jim Knepley <jknepley@chisp.net> writes (...) 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, (...) (26 years ago, 3-Apr-99, to lugnet.robotics)
| | | Re: Mindstorm to control a train?
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| Jim Knepley wrote in message ... (...) It may not be sooth enough for your application, but I use a on-for-a-while/off-for-a-while loop to slow down the motion on my turtle robots. It's a kind of extended PWM. If you program with visual basic there (...) (26 years ago, 3-Apr-99, to lugnet.robotics)
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