So you are looking to put on a mesmerizing show this Halloween? You may want to try this Night Sky Halloween Costume project from SparkFun Electronics. It glows at night and represents actual constellations thanks to 200 LilyPad LEDs. The cape has 10 circuits inside the lining with LEDs and LilyTiny to handle the twinkle.
More gadgets like this: here
Night Sky Halloween Costume
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