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The Arduino powered smart poi use the accelerometer data in multiple ways. The spinning motion is translated into RGB LED values, printing colors at specific points in the rotational arc. Accelerometer data is also transmitted to a computer using XBee Wireless chips, producing sounds with each spin. To change between color sequences, ranging from rainbow to red, blue and green channels, simply drop smart poi while at rest or stall while spinning.
The effect is truly mesmerizing, as witnessed at Maker Faire Bay Area 2013. A visceral combination of motion and light, they are simple to use but difficult to perfect.