A japanese company is working in a Raspberry Pi Zero cluster with 16 nodes, in a very small board.
I guess we will be able to work with Mathematica and WL on it, hope gridMathematica works on it in the future... while we can't run Mathematica Kernel at a videogame consoles at home ( Mathematica at PS3, PS4, XBOX ).
This is What a 16 Raspberry Pi Zero Cluster Board Looks Like
Raspberry Pi Zero cluster packs a punch
Idein
My mails regarding Gridmanager to Wolfram remain unanswered till today, same as my post in the forum here.
Btw, why don't simply use 4 faster (!) Pi2's? The only advantage I can see for this board is that you possibly have some more ram.
Yes, nice board, the company is actually needs that to develop a Raspberry Pi module called the Actbulb for computational sensing and data analysis. In order to perform internal testing they decided to make things easier by developing a board to allow them to plug in sixteen Raspberry Pi Zeros. Another link: RASPBERRY PI ZERO CLUSTER PACKS A PUNCH and image:
