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* I have so far not been very effective at getting the 3-rail O-gauge guys to try this Automatic Control stuff, but I'm going to ask them to think "GRANDKIDS <==> PROGRAMMING";


* I.E., what better way is there to interest their grandkids in doing something challenging with their minds, then LEARNING to program a model train controller (Mini-Panel) ??

VIDEO LINK:  https://youtu.be/pdaZyY0dnF0  OR  http://vimeo.com/819580528

* This  TrainProgramming.com  Video 845 shows a DCC Programmable Model Train Controller (aka NCE Mini-Panel) controlling 3 MTH Proto-3 O-Ga. trains on a single loop -- using NO blocks and a SINGLE infrared detector.

* We can optionally blow their horns, or have them make an intermediate "station stop".

* We can also optionally keep the 2nd train that's in the "yard" moving continuously at a reduced speed instead of stopping -- so that there are always 2 trains moving on the layout.

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* The system is configured so that it can be used as a public display. It has a "public" pushbutton out in front, labeled "Push and Release. The public can use this public button to start the trains.

* A "REPEAT" switch controls whether the trains run just 1 cycle and stop, or whether they will keep running continuously.

* An Atlas 205 slide switch is used to control whether all 3 trains run, just 2 trains run, or just 1 train runs.

* This system uses several other toggle switches, to control whether the trains blow their horns, or make a station stop.

* A Z-Stuff DZ-1012 infrared detector with DZ-1008 relay is used to detect when the trains enter the yard area, and then another train is "released" out onto the mainline.

thm03-845-3-mth-trains

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Last edited by James Ingram
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Nice!  But if there is only one sensor, how do the two trains "in the yard" know where to stop?  Also, did you install DCC decoders in these locs, or are you able to achieve this functionality with stock Protosounds-3?  Thanks for sharing!

Edit: one more nit-picky thing:  When the train waiting at the first station gets clearance to go to "road speed 8," it starts abruptly.  Is there a way to reprogram it for more gradual, realistic acceleration?  If this is intended to be a public display, a gradual start would be easier on the gear train and rubber tires.  My $.02.

Last edited by Ted S
@Ted S posted:

Nice!  But if there is only one sensor, how do the two trains "in the yard" know where to stop?  Also, did you install DCC decoders in these locs, or are you able to achieve this functionality with stock Protosounds-3?  Thanks for sharing!

Edit: one more nit-picky thing:  When the train waiting at the first station gets clearance to go to "road speed 8," it starts abruptly.  Is there a way to reprogram it for more gradual, realistic acceleration?  If this is intended to be a public display, a gradual start would be easier on the gear train and rubber tires.  My $.02.

THANKS for your interest in this system.

TWO TRAINS "IN THE YARD":

When the "incoming" loco crosses the detector, the controller starts a 14-second TIME DELAY. The two trains in the yard pull forward for this 14 seconds.

When the 14 seconds ends, the controller sends them both "Stop" commands.

RUNNING ON DCC:

All MTH Proto 3 locos will run on DCC as well as DCS, but there should be a DCC/DCS switch installed in the loco.

All Premier locos have this switch.

I am told that Railking locos had it from 2011 (the first Proto 3 locos) to 2014. After 2014, you need to add it to the Railkings.

The web page  https://autocontrols.wordpress.com/video820  has more details about this switch on the Railking diesels.

The steam locos have a jumper in the tender you can remove for DCC operation.

MY 3 LOCOS:

In the case of those 3 locos in the video

* I bought the Santa Fe F3 used and it had the switch. I think it was one of the those 2011-2014 Railkings that came with the switch installed.

* The steam loco, I was able to move the jumper pin in the tender myself.

* The Illinois Terminal SW1200, Gunrunner John put in the switch for me (and also the flashing roof beacon).


ACCELERATION:

On standard DCC decoders, the Configuration Variables (CVs) CV3 usually control the acceleration rate, and CV4 usually controls the deacceleration rate.

But from my brief experimentation, these two CVs seem not to affect the MTH locos.
However, the "default" acceleration/deacceleration is gradual enough, that I don't think it puts any strain on the drivetrain.

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