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The Randall Museum in San Francisco hosts a large HO-scale model model railroad. Created by the Golden Gate Model Railroad Club starting in 1961, the layout was donated to the Museum in 2015. Since then I have started automatizing trains running on the layout. I am also the model railroad maintainer. This blog describes various updates on the Randall project and I maintain a separate blog for all my electronics not directly related to Randall.

2016-10-08 - NCE USB Limitation

Category Randall

Simply plugging the NCE USB to Power Pro resulted in no status from AIU card whatsoever.

Consensus is that will never work on the USB (when it ironically works on a PowerCab, but only with one AIU on cab address 4).

Bottom line for Randall I'm going to have to switch to RS232 with a USB adapter.

https://sites.google.com/site/markgurries/home/nce-info/nce-usb-limitations

  • All forums and sites point to the same Keyspan USA-19HS adapter: http://amzn.to/2dBYkNY  … $25.
  • Need a Straight (not null modem) RS232 cable, 50 ft will work here.


2016-09-25 - Turnouts Control

Category Randall

This is where what should be simple becomes overly complicated.

The easy solution is to use NCE Switch-It (1 tortoise) or Switch-8 (8 tortoise) control.

There are a few issues.

This takes power from the track bus or external supply.

  • Know issue ⇒ Do NOT take power from same booster powering the same block that is being switched. If there's a short when throwing the turnout, it will remove power from the switch-8 which consequently won't be able to finish switching.
  • Power MUST be from either a different booster OR use the direct DC power plug.

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2015-12-25 - Non valorem in ruinam

Category Randall

The GGMRC officially donated the layout to the Randall Museum.

L'important ce n'est pas la chute, c'est l'atterrissage.

Now it’s time to (re?)build a relationship and get this going.

Freeze frame. How did we end up in this situation?

The opinion below is solely my own and not the official views of the GGMRC. It is based on my own recollection of events and my own biased opinion on such events.

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