New Interlocking Signals on the Layout

That looks really nice Joe.

Thanks for showing the progress of your work Joe. Looks pretty good.

Prairie

Nice work, I would like to know more about how you make your signels and what you use to control them.

Thanks,

Joe

I make my signals out of ABS Plastic from Plastruct.  It is 1/8 inch thick and cut to size with a Dremel.  The holes are drilled 3/16 inch whereby the lenses are inserted and kept in place by O-rings.  The LEDs are supported using their leads by a piece of cut styrene.

All signals are controlled by a signal controller circuit that uses old fashioned TTL chips (NAND gates, inverters, etc).  Each block on the layout has a current detector circuit that detects a train in the block.  The detection signals are sent to the signal controller.  All modules have one or more signal controllers depending on the complexity of the module.

I have a degree in electrical engineering, so I guess that helps.