Inside an illuminated (RGB) Xylo Band as used in concerts.

Some of the larger music concerts give these bands to the audience members for extra effect. The show system has the ability to send codes via wireless or infrared beacons depending on the system in use. This lets the operator make the audiences bands light up in pre-programmed colours and effects.

Here's a link to a forum where they're exploring the protocols for these units. http://xylobandhacking.freeforums.net/

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