Subject:
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Re: Control lego motors and rotation sensors
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 27 Apr 2002 12:52:01 GMT
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Viewed:
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833 times
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"Jerry Kalpin" <jdkalpin@sympatico.ca> writes:
>
> I'm not sure that it uses extra power. I believe the 'brake' mode is
> achieved with back-EMF by short circuiting the motor terminals. I
> dry-cycled the Mold Press for several hours and did not need to change
> batteries. However, it is not easy duty for the motors; it's a testament
> to their design ...that I have not ruined one yet.
I'm not so sure about motor design, there are quite a few motors
that block (one in ten for me).
Since wou use RoboLAB it may rather be the LEGO firmware that protects
your motors, it contains code to limit the speed of switching the motor.
Jürgen
--
Jürgen Stuber <stuber@loria.fr>
http://www.loria.fr/~stuber/
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Message is in Reply To:
 | | Re: Control lego motors and rotation sensors
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| (...) The 'on-brake-on' method of speed control is VERY useful. When implemented it looks and acts like a stepping motor. For an example, go to my website at (URL) and navigate to my Injection Molding Factory. There is a motorized air valve with a (...) (22 years ago, 26-Apr-02, to lugnet.robotics)
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