Subject:
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Re: CM: MotorCurrent
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 3 Jan 1999 16:01:09 GMT
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Viewed:
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1569 times
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> At 10:23 10-12-1998 Thursday , Fredrik Glöckner wrote:
> > For the Cybermaster unit, it is possible to monitor the current of the
> > external motor, measured in milliamps. I assume this can be used to
> > detect when the motor is stalled.
Laurentino Martins skrev i meddelandet
<4.1.19981210111532.00a18080@195.61.90.220>...
> I only made one test with it, and by the looking at the results I couldn't • tell if the motor running loaded, but I may be wrong!
>
<snip>
>
> My opinion is that this function was only implemented in CyberMaster to
make sure >children when playing their games with the computer, built their
vehicles/robots >*properly* with the motor attached to the right place.
I just started reading this newsgroup, as the kids got their (and _mine_) CM
for Christmas. So sorry if this already has been covered in later posts.
I think Fredrik is right, and Laurentino wrong.
I successfully made a program for the Crusher arms, which monitored the
current of the third motor to decide when to stop it. It worked like a
charm! Much better than the standard Crusher program did, as that version
often drove the mechanism a little bit too far, making it fall apart after a
while.
With current monitoring, You can always be sure to stop before the motor is
overloaded. You have to test a little for finding the correct limit though.
--
Anders Isaksson, Sweden
BlockCAD: http://user.tninet.se/~hbh828t/proglego.htm
Gallery: http://user.tninet.se/~hbh828t/gallery.htm
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Message has 1 Reply:
 | | Re: CM: MotorCurrent
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| (...) And what would you say the current limit is? I believe Andy Bower used a limit of 95. Would that apply to your case as well? Fredrik (26 years ago, 3-Jan-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: CM: MotorCurrent
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| I only made one test with it, and by the looking at the results I couldn't tell if the motor running loaded, but I may be wrong! The result of the function seems to be: .If no motor is attached, the result is zero. .If a motor is attached and not (...) (26 years ago, 10-Dec-98, to lugnet.robotics)
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