Just heard of this "cluster HAT" which is basically a USB hub. Assembly is quiet simple. For me is 4 zeros not enough. So can I use normal larger hub to make a bigger cluster?

Most important of all and if possible, which is the image I should install? By image I don't mean some picture but the OS to be flashed on the SD card.

  • Why? If you use a Pi4 it will outperform 10 Zeros (even if you could buy 10) and be cheaper.
    – Milliways
    Commented Jun 28, 2021 at 22:55
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    – Darth Vader
    Commented Jun 29, 2021 at 9:43

1 Answer 1


You don't need a HAT to create a cluster -- you don't need any additional hardware. Usually pi's with ethernet jacks are connected via an ethernet switch, but since Zero's don't have that, apparently this can be done via wifi:


The only thing besides the zero used in that demo is a plastic case. I don't know if there is a limit to the number that can be used, but eight or ten should be fine.

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