Thanks for posting! I&#x27;m actually updating the cluster right now, and I have a Pi2 version, a Pi3 version (still in testing, not live yet), and a Pi Zero version (very slow, but same thing is the size of a plum!).<p>I&#x27;ll be presenting on it at this year&#x27;s php[tek], and will also post a few YouTube videos and blog posts about it separately.<p>Of course it&#x27;s not as fast as my 5-year-old used Lenovo... But it&#x27;s great for educational purposes (before anyone starts asking why you&#x27;d buy a bunch of Pis when one small laptop beats them performance-wise many times over).