A cool project from "Popular Science" writer Dave Prochnow
This is a pretty neat project that was bouncing around the SparkFun company email the other day. Dave Prochnow, who writes for "Popular Science," did a cool short tutorial explaining how he used SparkFun's Single Lead Heart Rate Monitor to create a LED interface that lights in tune with the wearer's heartbeat.
If you want to build your own, check out the tutorial here. We've also created a wishlist of the parts you would need (note: we subbed out the micro LilyPad LEDs for regular LilyPad LEDs - they will work the same, but are larger!):