Subject:
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Re: Danish train show electronics
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Newsgroups:
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lugnet.trains
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Date:
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Thu, 5 Oct 2006 13:28:31 GMT
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Viewed:
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3280 times
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In lugnet.trains, Anthony Sava wrote:
> In lugnet.trains, William R. Ward wrote:
> > Does anyone know what this little bit of electronics is for?
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=2054369
> > It's from a LEGO event recently held in Denmark. I found the link on Jan
> > Beyer's Blog ( http://www.ilenn.com/blogs/janbeyer/ ) but there's a problem with
> > that blog which makes it impossible to write comments.
>
> Well, I wasn't there, and I'm no electrical engineer, but I'm going to take a
> stab at guessing. It looks like in that picture that the two LEDs are getting
> their power directly from the rails. In the picture before it in the gallery:
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=2054368
>
> It looks like they all light up when power goes through the rails (the rail on
> the left is lit, the rail to it's right is dark, and there's a blurry thing on
> the left rail). My guess its some sort of fancy visual way of knowing which
> track is powered at any given time.
>
> But that's just a guess.
>
> --Tony
You guessed correct! These pics are from my rail-race-extreme layout, and the
Led's are just for the looks.
If a race starts, both tracks light up. One red, one yellow.
Side-effect, very usefull in this case: the Led's reduce the amount of current
available for the train motors.
Usefull because this rail-race-layout has a split-level crossing, wiht
corners... the racers don't derail :-) Saves a lot of mess on the table and
floor, ha!
The race-kids don't mind the slower speed (and are not aware of it): they just
want to build & race!
The guys from the French AFOL club, Freelug, made fantastic small movies of the
whole event. You'll find a race-movie here, just click to see the others:
http://gallery2.freelug.org/main.php/v/La-Gallerie-de-qdm/Expositions/2006-Skaerbaek/Videos/DSCN2355.MOV.html
If anyone is interested: I could make some pics of the back of the rails. Just
to prove that 'No Lego is Harmed'! -except for cutting endless pieces of 5mm
Lego tube- :-)
Klaas
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Message is in Reply To:
 | | Re: Danish train show electronics
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| (...) Well, I wasn't there, and I'm no electrical engineer, but I'm going to take a stab at guessing. It looks like in that picture that the two LEDs are getting their power directly from the rails. In the picture before it in the gallery: (URL) (...) (18 years ago, 4-Oct-06, to lugnet.trains)
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