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In lugnet.robotics, Brian Pilati wrote:
> 1- Power the train simply using the NXT and the
> converter cables. Too much battery drain during
> the show.
Are you using the NXT on batteries alone, or using the Li-ion battery pack so
you can plug the NXT into a wall for more consistant power?
> 2- Isolate a section of track via a switch and power
> the train via a converter cable only when the train
> is on the isolated section. This has probably been
> the best approach.
As others have noted, this has worked well with the RCX. It's essentially how
the GBC trains are controled (except there the entire track ends up powered by
RCXs, just multiple RCXs with multipl segments per RCX :-) ).
> 3- Attached a servo motor to the 9v modulator and then
> programmed rotations from the NXT to the servo motor to
> determine speed. There was much difficulty
> attaching the servo to the modulator.
Have you looked at this?
http://news.lugnet.com/trains/?n=26726&t=i&v=a
> Is there a better way?
I don't think anyone has ported LDDC to the NXT... yet... but i would think that
any solution that worked with the RCX (like direct-powering the trains, at least
small ones) would work with the NXT only perhaps better (the 500 mA limit being
raised on the output ports).
--
Brian Davis
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Message is in Reply To:
 | | Powering 9v Trains using the NXT
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| To all, I would like to find a way (simple way that is) to power our LTC 9v trains using both the standard LEGO 9v train modulator and the NXT. We have attempted the following: 1- Power the train simply using the NXT and the converter cables. Too (...) (17 years ago, 17-Oct-07, to lugnet.robotics, lugnet.org.us.ulug)
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