Shift Register w/Driver

Ok. The 4017 would have been fine for the single pattern, but with multiple patterns you need more, or different, than just it alone. John Fields will probably post a full schematic, once the requirements are clear. :-) I see where he has already mentioned one possible chip.

As to your question about the Panasonic LN21CPH LED at 20 mA, that's the test current. It will work over a wide range of current, from around 1 mA to a maximum of 25 mA, per the datasheet. The more current a LED gets, the brighter it is. I usually run LEDs a lot lower than maximum. Likely less than 10 mA would be plenty bright enough for me using that LED. YMMV

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Sorry for being slow on this reply.

Supply Voltage: 12v LED: LN21CPH Resistance 1200 - 1500 ohms (~6 - ~8 mA w/1 LED per leg) Shift Register: TPIC6B595 Timer: 555 Counter: 4017 (need recommendation)

I know I originally stated the I wanted 2 LEDs per leg and still do, preferably in parallel (So I don't have to run a lot of wires to make them series). But I can solve that after I get the first part bread-boarded and working. Probably still need to run the LED(s) from driver ?

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John, Thanks for pointing out that issue with the timing, I did not foresee it.

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I wanted to thank everyone that posted. I ordered the parts and will get it wired up and post back.

Thanks for the help.