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In lugnet.trains, Ross Crawford wrote:
> In lugnet.robotics.nxt, David Laswell wrote:
> > if you set up a short section of insulated track,
> > how feasible would it be to use an NXT... to delay
> > a train that's moving too fast?
>
> Block control... Yours is a variant of that. It
> works, but as you suggest, requires sensors to
> tell you where trains are... it should be doable,
> even with an RCX.
Indeed, Steve Hassenplug & I did exactly this at BrickFest 2005 with the GBC
trains - we had two trains running around a single loops, but in this case used
four isolated sections so that each side fo the loop was under the complete
control of a single RCX (to habdle all the loading, unloadling, delays, etc.).
I've also used a single RCX to run two trains on a single loop with a single
isolated siding and a remote controled point. No collisions, and the RCX could
select which train (it could distinguish) to switch out to the siding. Note that
the RCX/NXT can monitor times as well, so it can deduce is something is
seriously wrong (like no train seen for too long, etc.).
--
Brian Davis
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Message is in Reply To:
 | | Re: Controlling trains with NXT?
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| (...) Block control was fairly common on model train layouts before DCC and other digital solutions became available. If you do a google search for "block control" you should find a few references. Yours is a variant of that. It works, but as you (...) (18 years ago, 22-Apr-07, to lugnet.trains, lugnet.robotics.nxt)
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