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Illinois Central:http://www.trainweb.org/fredatsf/IC-green.htm
Probably just standard SMD 0402 LEDs (0.020" x 0.040"). Or did they get their hands on some 0201 (0.020" x 0'010") size LEDs?
You mean like these?
Now that's a low blow! LolHow dare you call me out on all this pennsy nonsense! ...
0201s.
No, I was still trying to squeeze 0402s into the Showcase heads. These 0201s are really new... Digikey now carries them, and I gather that's what Jim Hinds is using for the micro-nano (or femto!) illuminators. What's nice is they have the yellow and green in signal colors (as well as the normal LED "off" colors).
Anyway, apparently spurred by what I did with the two 0402s, Walt redesigned the head and partnered with Jim to do a single 0404 R-Y-G chip. That solved the problem, and no more futzing around with fiber optics. The signal project has since been back-burnered while I work on the C855 trio; last I left it was in trying to fit three wire bundles down the mast. I have a solution that will be resumed once the Alcos are done or mostly done.