Subject:
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Re: Motor mis-match.
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 15 Jan 2001 13:23:22 GMT
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Original-From:
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Shawn Menninga <smq@ANTISPAMdwarfrune.com>
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Viewed:
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548 times
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At 09:53 PM 1/14/01 -0600, you wrote:
> I was having a boring evening - so I decided to test some theories
> about Lego motors - and at the risk of seeming pedantic - here are
> my findings:
Did you reverse the motors by issuing the "Reverse" command on the
RCX or by flipping the motor leads 180 degrees? In the first case,
the observed slowing could easily be a property of the solid-state
polarity switching circuitry in the RCX, where the second case would
necessarily indicate an inherent property of the motor itself.
Interesting experiment, though!
-SMQ Shawn Menninga smq@dwarfrune.com
--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--
"...to live deliberately...to put to rout all that [is] not life, and not,
when I [have] come to die, discover that I [have] not lived." -- H. D. T.
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Message has 2 Replies:
 | | Re: Motor mis-match.
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| I did it both ways, and got the same results(the order, not in exact speed). I think that the motors are 'tuned' in some way, because random error cannot occur 100% of the time. All motors went slower with the cable turned or the RCX on 'Reverse', (...) (23 years ago, 15-Jan-01, to lugnet.robotics)
| | | Re: Motor mis-match.
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| Why not eliminate the vagueness of RCX's output circuitry altogether by running the motors from a stabilized bench supply set to 9.000 volts. That's is what I did when I characterized all my motors. I measured the rpm and wrote it on the bottom of (...) (23 years ago, 15-Jan-01, to lugnet.robotics)
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Message is in Reply To:
| | Motor mis-match.
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| I was having a boring evening - so I decided to test some theories about Lego motors - and at the risk of seeming pedantic - here are my findings: Several times, people on this list have asked why their robots don't drive in a straight line - the (...) (23 years ago, 15-Jan-01, to lugnet.robotics)
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