Chapter 3555 Timer LED Flasher
Alternating flashing lights that looks like emergency lights are shown in this image. In this case they are flashing so fast, they both are captured during the camera shutter.
You can configure this project to flash one or two lights, either on-off, or alternating back and forth. This is like an emergency warning blinker, or the lights on top of a police car, and has near-universal recognition. Put this circuit on your bike, on your door, your backpack, you name it.
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