Subject:
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Re: Fwd: new products (Remote Control)
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 12 Aug 1999 13:02:26 GMT
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Original-From:
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Russell Nelson <nelson@crynwr.com[IHateSpam]>
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Viewed:
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549 times
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Robert Munafo writes:
> In lugnet.robotics, lego-robotics@crynwr.com (Jacob Schultz) writes:
> >This remote control sounds like a neat little thing.
> >Just currious.. Does the motors float or brake when you release the
> > buttons, and the program doesn't control the output?
> >I don't have a remote myself.
>
> Great question. They "brake". As soon as you start a motor on the RCX, it
> doesn't go into "floating" mode again until you turn off the RCX. I don't know
> how the braking is accomplished but it's probably just a matter of the motor
> trying to generate a voltage which is immediately soaked up by the driver
> circuit (which is trying hard to keep the voltage at 0)
Yup. You can see this for yourself by connecting the motor to itself
with a black cable. Suddenly it's a lot harder to turn.
--
-russ nelson <nelson@crynwr.com> http://russnelson.com
Crynwr sells support for free software | PGPok | Government schools are so
521 Pleasant Valley Rd. | +1 315 268 1925 voice | bad that any rank amateur
Potsdam, NY 13676-3213 | +1 315 268 9201 FAX | can outdo them. Homeschool!
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | RE: Fwd: new products (Remote Control)
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| (...) Not to put too fine a point on it, but it depends which way you connect the motor to itself. Try the experiment with the wires coming out the same side of the connector, and then opposite sides... When it is the same side, the voltage/current (...) (25 years ago, 12-Aug-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: Fwd: new products (Remote Control)
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| (...) Great question. They "brake". As soon as you start a motor on the RCX, it doesn't go into "floating" mode again until you turn off the RCX. I don't know how the braking is accomplished but it's probably just a matter of the motor trying to (...) (25 years ago, 12-Aug-99, to lugnet.robotics)
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