Led Flasher with IC 555 Circuit

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A dual tandem flashing light circuit powered by a 9 volt battery,

This circuit is powered by a 9 volt battery, suitable for warning lights on a tall structure. (Personally, I can’t recommend you buy anything but the Rollins Railroad Designs kit; for $4.00 you can’t go wrong. The 555 IC is about $1.50 by itself at Radio Shack). If you choose to buy all the parts yourself, realize you need ONLY two LEDs, not two of each; you should be able to mix and match colors.
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