Subject:
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Re: latest legOS strangeness
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Fri, 17 May 2002 13:34:33 GMT
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Viewed:
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2264 times
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Samuel Winchenbach <swinchen@eece.maine.edu> wrote:
> > Maybe make this selectable with a build option? The bad thing about brake is
> > that it actually draws current (=reduces battery life)
> >
> > ROSCO
>
> Not really.. braking using the current generated by the motor (acting as a
> generator) once the power is removed from it. H-Bridge has what is called
> a break bit. The break bit simply shorts the two terminals on the motor
> together, generating a magnetic field that "brake's" the motor. This uses
> virtually current from the batteries. But I do see the advantage of having
> a motor capable of coasting.... so the selectable build option sounds cool.
I may be wrong - 'my' RCX is actually my brother's, and is 3 hours drive away -
but doesn't the remote control with the official firmware do float when buttons
released, but brake if forward and reverse are pressed together?
Max
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Message has 1 Reply:
 | | RE: latest legOS strangeness
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| (...) Interesting question. I'll try this at home with my remote and RCX loaded with standard firmware. Anyway, that could only say that the remote control knows that it has to send a OFF (brake) cmd to the RCX when fwd and rev are pressed together, (...) (23 years ago, 17-May-02, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | Re: latest legOS strangeness
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| (...) is (...) Not really.. braking using the current generated by the motor (acting as a generator) once the power is removed from it. H-Bridge has what is called a break bit. The break bit simply shorts the two terminals on the motor together, (...) (23 years ago, 17-May-02, to lugnet.robotics.rcx.legos)
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