Dave's Dance in an An Arduino Based Motion Sensitive Light Suit
An Arduino Based motion sensitive light suit
It can also display patterns and such although it just the motion sensing in the vid. It uses an ADXL335 accelerometer to sense the wearers motion. My friend Dave kindly put it though is paces with his new dance routine.
apologies for my poor camera work and excessive enthusiasm I'd been awake about 36hrs at this point