Reviews of Cluster HAT v2.0

The spacing is too close for the Zeros, making ones with headers incompatible. You may also with to label them 1 to 4, in case you unplug them. They are slot specific due to how they software works.

I have one of these on a Pi 2B, and used it to start learning about cluster computing, it's FANTASTIC! First, it's the cheapest way to build a cluster of Pis, Second, apart from typos the ClusterHat websites gets you up and going quite quickly, although I got the best results using the NAT download for my controller Pi. Third, it works with Mathematica (my primary Pi interest); mind you better resources online for this would be most helpful. (I hope to fix that on Wolfram's fora). It won't perform very quickly, but you can't have fast at this price; but for the learning stages it's perfect, and small to boot. If only it fit into a case...