The Spark Core Internet Button Shield only has 11 NeoPixel LEDs, but has space for and practically screams for the 12th LED to complete the circle.
And what could be more fun than making a fascinating clock with Internet connected LEDs?!
So this is a Spark Core with Internet Button Shield, installed in a cheap promo-gift clock casing and powered by a USB cable.
It is easier to read than a Binary Clock, but still a bit more challenging and interesting than a normal one.. :)
After having it in the living-room for a while it has proven that the LEDs are very usable in a darkened room and works very nice as a companion to the TV.