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Here is a circuit I built several years ago for a haloween display. The schematic shows orange LED's but they can be changed to another color.
The LED's flash in a fairly random pattern.
I don't recall it ever being published in a magazine, although it may have been submitted to another forum.Was that schematic published in a issue of Nuts & Volts? Your project, handle and schematic seem very familiar. Poptronics maybe? I think I still have the issue..... Anyway, just curious.