INTL 3:770/1 3:770/3   
   REPLYADDR bp@www.zefox.net   
   REPLYTO 3:770/3.0 UUCP   
   MSGID:  9d7a15b1   
   REPLY:  b0cff165   
   PID: SoupGate-Win32 v1.05   
   Theo  wrote:   
   >   
   > We made a cluster of 50 Pi4s in a 4U server chassis.  To avoid a cabling   
   > nightmare much of the interconnect was via boards plugged into the GPIO.   
   > They provided power and USB-serial for the UART - it also allowed power   
   > switching the Pi for hard resets.  Power was daisy chained from a big   
   > PC PSU:   
   > https://github.com/Cambridge-AdvancedOS/cam-power-uart-hat   
   >   
   > At the back of the box was a big USB hub and an ethernet switch, from where   
   > everything fed into a master controller Pi.   
   >   
   > That was a custom build, but companies have similar solutions:   
   > https://www.8086.net/products   
   >   
   > Since the Pi only needs a 5V supply, putting in power via the GPIOs avoids   
   > needing USB-C PSUs.   
   >   
      
   All are elegant, but I'm trying hard to stick with commonplace off-the-shelf   
   components that are individually replaceable without disturbing anything else.   
      
   Thanks for writing!   
      
   bob prohaska   
      
   --- SoupGate-Win32 v1.05   
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)   
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