Here I’ll show you how to add flashing LEDs to your backpack for fun and safety. I used a LilyPad Arduino with a rechargeable lithium-polymer battery for flatness and re-usability. The LEDs blink in a marquee pattern, two at a time, in patriotic red, white and blue. This project also appears as a CRAFT Video! Grab the Source code and schematic
Projects from Make: Magazine
Arduino Blinking Bike Patch
Add flashing LEDs to your backpack for fun and safety.
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Steps
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Step #1:
Coil the leads of each LED: make the longer lead (positive) into a square spiral, and the shorter lead (negative) into a round spiral.