http://hackadaycom.files.wordpress.c...ng?w=580&h=374
Not only did [Josh Kiepert] build a 33 Node Beowulf Cluster, but he made sure it looks impressive even if you don’t know what it is. That’s thanks to the power distribution PCBs he designed and etched. In addition to injecting power through each of the RPi GPIO headers they host an RGB LED which is illuminated in blue
http://hackaday.com/2013/05/21/33-no...-raspberry-pi/
