rtr12 posted:...
Anyway, if I could talk you two into it, I would appreciate you two looking over the new schematic and I will also post the Diptrace PCB files for your examination. Any comments/tips/pointers etc. would be much appreciated!
It appears you're using 2mm pitch 5-pin connections to each signal head? Have you identified an inexpensive source of male-female connectors or pre-crimped cables of suitable length/gauge? Or maybe you don't plan to use connectors and just solder wires from the LEDs directly to the board?
Are you fabricating your own signal heads? That is, I see eBay seller "wehonest" has some inexpensive O-gauge LED signals...but they use the 4-wire method (R, Y, G, and a common) … as opposed to the 5-wire method.
I realize this is a hobby circuit...but the CD4017B chip is being pushed to drive a pair of LEDs in parallel. That is, one might stumble across something like this:
I suppose 10 mA output or 5 mA per LED can be quite bright but I notice that other off-the-shelf controllers advertise ability to drive up to 10 signal heads or even incandescent bulbs.
