Update: The RPI2b eventually corrupted and couldn't keep up with the RPI3s so I ended up removing it from the cluster
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Assemble the pi's and case. (shown are 3 pi's, but i ended up added a 4th RPI 2b)
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Attach the network switch to the top of the cluster
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Attach the USB power supply to the bottom of the cluster
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Attach the network cable
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Attach the USB to mini-usb cables from the USB hub to each pi
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Attach the USB cable to the network switch power input