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10 LED Projects for Geeks by John Baichtal

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9Wearable Timing Bracer by Mike Hord

In this project, you’ll make a glowing wrist timer that’s perfect for a LARP costume.

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I have a lot of friends who participate in live action roleplaying (LARP) games. As a concept it’s similar to tabletop roleplaying, except there are no turns, there’s no dice, and everything happening around you has a component of reality to it.

One of the elements of the game is timed effects; for instance, a spell may put you to sleep for 10 minutes, pin you in place for 1 minute, or make you laugh uncontrollably for 5 minutes. Since the game takes place in a fantasy wonderland, using a wristwatch to time an effect is an ...

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