Subject:
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Re: Mindstorms Automatic Train Control Questions
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Newsgroups:
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lugnet.trains, lugnet.robotics
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Date:
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Wed, 31 Oct 2001 16:46:03 GMT
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Viewed:
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1049 times
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Mario Ferrari wrote:
>
> "Dean Husby" <nntp@akasa.bc.ca> wrote:
> > Zhengrong Zang wrote:
> > > If you use RCX/Scout to control tracks not trains, you don't need so • many
> > > RCX/Scout, separate your layout to blocks, then one block is connected • to one
> > > output port of RCX/Scout, this way is better than putting RCX/Scout on • the train,
> > > because you don't need to modify your train.
> >
> >
> > With the Scout (or RCX for that matter) you can use a phototransistor as
> > a light sensor for the scout. Put a light or IF emitter on the other
> > side of the track and it can detect a break in the light. You can count
> > cars or anything you want. It works really well.
>
> You can use the Scout to detect trains also with cheap custom made reed
> sensors, they behave like passive sensors. IMO they're ideal to detect
> trains: the magnetic couplings of the cars are strong enough to operate
> them.
I used Reed sensors in the last train show the VLC did. They worked
well.
I had 3 of them in parallel for the trolley track. It would move between
3 stations and stop at each one for a time.
http://www.brickshelf.com/gallery/TFM/ToyTrainShow2001/Mpegs/trolleyclosecall.mpg
I also used a reed in a little building to detect the Hogwarts Train.
http://www.akasa.bc.ca/tfm/temppics/DSC00005.jpg
http://www.akasa.bc.ca/tfm/temppics/DSC00006.jpg
Dean
--
Dean Husby
LUGNET Member #320
TFM's LEGO Workshop - http://www.akasa.bc.ca/tfm
The Vancouver LEGO Club - http://www.akasa.bc.ca/vlc/
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