Subject:
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Re: Thoughts on Battery-powered IR-controlled trains
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Newsgroups:
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lugnet.trains, lugnet.dear-lego
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Date:
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Fri, 13 Jan 2006 20:45:50 GMT
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Viewed:
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8011 times
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In lugnet.trains, Ross Crawford wrote:
> I'm not saying it's impossible, just that it isn't as easy as it might sound.
> For instance, I would probably work out a few critical points on the layout, and
> place an RCX at each, making sure it gets good coverage of all trains going past
> (assuming "blind" running is possible). It would also allow time "gaps" where
> I'm not directly talking to trains, so I can use IR to talk to other RCXs, but
> it may not be easy to place them for best train coverage and still be able to
> communicate with each other. I'm sure these problems are not insurmountable, but
> it's gonna take some dedication to get it to work right in a show situation. I
> would also need sensors to tell me when a train was going past, and logic to
> know when there *should* be one - now I'm running multiple trains, my "network"
> needs to know when there's been a derailment, otherwise my emergency rescue figs
> are gonna start complaining of overwork ;)
You've also got the problem that if they work like the volume control on a TV
remote (which is likely) the signals are "speed up" and "slow down", not
absolute speed values. Since you have no way of knowing whether the train
received a particular signal or not, you have no way to tell what speed it is
travelling at.
Jason Railton
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