Subject:
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Re: "No Contact" Homebrew Train Sensor for Mindstorms
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Newsgroups:
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lugnet.trains, lugnet.robotics
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Date:
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Tue, 5 Dec 2000 19:32:18 GMT
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Viewed:
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56 times
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In lugnet.trains, Eric Kingsley writes:
> In lugnet.trains, Chris Phillips writes:
> > As has already been reported by others, I built an automated railroad
> > crossing for the NELUG train display at last weekend's Greenberg show. I
> > wanted to take a moment to describe the "homebrew" sensor that I used to
> > detect an approaching train so that others might benefit in their own layouts.
>
> I might just add that while this was a bit over my head it work extremely well
> and the sensor itself was very small and unobtrusive. It was a non-LEGO
> solution but I loved it and recommend it.
>
> I think with some reworking it may even be possible to hide the sensor in/under
> one of the ties themselves.
Is there a photo that clearly shows the sensor in a fairly tight closeup so
that it can be judged how obtrusive/invisible it is? I skimmed through many
of the photos posted by you, Dave, and Tim but did not see one, although I
may have missed it...
Thanks!
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