Subject:
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Re: Automated RT - Acceleration with RCX
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Newsgroups:
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lugnet.trains
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Date:
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Tue, 5 Dec 2000 22:47:51 GMT
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Viewed:
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1359 times
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Dan Boger wrote:
> On Sat, Dec 02, 2000 at 09:07:55PM +0000, Rebel Transcanner wrote:
>
>
> Your idea sounds similar to something Tom Cook and me worked on a while
> ago. Take a look at :
>
> http://www.peeron.com/pics/loop/
>
> we had a simpler setup though - 1 track, to be used for 2 way traffic, and
> two stations. We also wanted to run 3 trains, so one train had to be
> running at all times.
>
> > So... I've got an eastbound/westbound track. Station A, B, and C would all
> > be connected to one of three outputs on the RCX. I'll figure out sensing
> > later. The sections of track between the stations, which are insulated from
> > the stations themselves (I'm assuming it's possible to isolate sections -
> > how might I do that?), would be powered via a speed regulator at some
> > constant voltage. Ideally I'd have two trains (although that's a little ways
> > away; I'll likely just start up with one and see how that goes), so let's
> > start at Station A.
>
> Isolating track is fairly simple - you just disconnect the track, and hold
> it in place 1 stud apart... The trains don't mind it at all, though it
> does mess up lego geometry if you're not careful.
>
> > RCX Output A would accelerate the train, by presumabally ramping up the
> > power output (from 0-7) at some spaced time interval between the PWM level
> > shifts. A snesor would say "ok, we've cleared the platform and the train is
> > on the powered section". Train proceeds on the Westbound track to station B.
> > On reaching station B's block, a sensor begins the PWM rampdown to
> > decelerate the train, and stop it at at that platform for some dwell. Chime.
> > Accelerate train, travel until cleared of station B block onto the
> > continuous voltage section... and into terminus at Station C.
>
> We never played with speeing up the trains via RCX - we just did an on/off
> switch... from Off to Full power.
>
> > Here, the train would stop, dwell, chime... then leave. Spring switches? Can
> > that be done with 9V? I'm hoping so... because that'll simplify the
> > direction change sequence.
>
> It is possible in some situations... Just pay attention to short circuits.
>
> > So I guess I need... jeez, 8 of those clips that go from the 9V connector to
> > the rails. Are those available separately as a S@H item?
>
> Only way I know of getting them, without a full train set is via
>
> http://guide.lugnet.com/set/4548
>
> but you end up with a bunch of controllers... perhaps dacta sells some?
They were avail as pack
http://guide.lugnet.com/set/5305
. I picked up a few, I don't know if they still sell them.
Dean
--
Coin-Op's For Sale!: http://www.akasa.bc.ca/tfm/coin-op.html
Dean's Lego Workshop: http://www.akasa.bc.ca/tfm/lego_wr.html
Vancouver Lego Club: http://www.akasa.bc.ca/vlc
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Message is in Reply To:
 | | Re: Automated RT - Acceleration with RCX
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| (...) Your idea sounds similar to something Tom Cook and me worked on a while ago. Take a look at : (URL) had a simpler setup though - 1 track, to be used for 2 way traffic, and two stations. We also wanted to run 3 trains, so one train had to be (...) (24 years ago, 2-Dec-00, to lugnet.trains)
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