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Reply to "The RR Track Signal Control Board Project"

stan2004 posted:

LOL.  Well, some 5 years ago, there was this OGR thread discussing how to drive the 3-aspect we_honest signals.  We_honest offered their signal controller board as described earlier.  The thread showed how to roll your own circuit for $1 or so in components with the timed-yellow.  The same circuit could drive the 3-LED RYG or the 7-LED PRR style.

cheap signal controller

GRJ has already shown how to roll-your-own insulated-rail trigger (his so-called ITSD) in various threads.  So the two circuits in combination could provide a low-cost (less than $5 in parts) option.   No daisy-chaining capability, no clever bi-directional operation, no crossing-gate flashing, just basic drive-the-$4 3-aspect signal.  End-of-story!  

 

Stan and John, Your circuit together with a variation of GRJ's "Itad" work great. Can be modified to to suit 2 or 3 light colored or directional signal if you like. Also it could probably  modified to use multi colored LED"S. Less than $3.00 using GRJ's insulated rail "Itad".

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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