How do I make a level crossing signal?

 
  Trainguy01 Station Master

Location: Casino
Hi all.

I have been making my own level crossing flasher signals as of late, and I have it a hurdle. The circuits are done and the locals location is set, but the only problem is getting the wiring for the 4 LEDS to travel out of sight, through the mounting post and out the underside of the baseboard. It seems like a reliatively simple task but cramming 8 little prongs and cables into a tiny lolly pop sick cut to size is proving to be difficult.

Has anyone ever done this before? How did you do it?

Help is greatly appreciated,
Wayne

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  apw5910 Chief Commissioner

Location: Location: Location.
Why eight wires? Surely you only need three? One common and two with alternating signals (one's off while the other is on). And leds use very little current so the wires can be quite thin, even enamelled 24 AWG (0.5mm dia) or finer.
  Trainguy01 Station Master

Location: Casino
Why eight wires? Surely you only need three? One common and two with alternating signals (one's off while the other is on). And leds use very little current so the wires can be quite thin, even enamelled 24 AWG (0.5mm dia) or finer.
apw5910
Ah! It's so obvious now you have pointed that out! Thanks for your help, apw5910.
  xdford Chief Train Controller

Why eight wires? Surely you only need three? One common and two with alternating signals (one's off while the other is on). And leds use very little current so the wires can be quite thin, even enamelled 24 AWG (0.5mm dia) or finer.
Ah! It's so obvious now you have pointed that out! Thanks for your help, apw5910.
Trainguy01
If you make the post from brass tube, you reduce the need for one of those wires by soldering the "common rail" to the post. I did a similar thing with my signals on http://www.xdford.digitalzones.com and click on "Searchlight Signals"

Hope this helps!

Cheers

Trevor
  Trainguy01 Station Master

Location: Casino
Why eight wires? Surely you only need three? One common and two with alternating signals (one's off while the other is on). And leds use very little current so the wires can be quite thin, even enamelled 24 AWG (0.5mm dia) or finer.
Ah! It's so obvious now you have pointed that out! Thanks for your help, apw5910.
If you make the post from brass tube, you reduce the need for one of those wires by soldering the "common rail" to the post. I did a similar thing with my signals on http://www.xdford.digitalzones.com and click on "Searchlight Signals"

Hope this helps!

Cheers

Trevor
xdford
Thanks for your reply Trevor. That is a good way of doing it, and yes it has helped me a lot.
  David Peters Dr Beeching

Location: "With Hey Boy".
Colour light signals can also be done this way using the brass post as the common for the lights. You might even get away with it on Semaphore signals as well. It is a good dodge to use though when you need a common to operate lights etc. And it saves at least one wire or possibly more inside the post of the signal.

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