Project I’ve almost finished.. Just need to secure the added components to make sure they won’t shift and short-out in the future.
Changed the PSUs because the originals were dead, I got ones with an additional output. Connected two ideal diodes to each power supply so that my stuff will also have the redundant power.
5v UBEC from the ideal diodes to the SBC.
Used a NanoPi Neo because that is what I had on hand, couldn’t get a hold of a Raspberry Pi Zero 2, and a full sized Raspberry Pi board didn’t fit..
The NanoPi’s 5v output powers a small 5-port gigabit switch, added two Cat5e bulkheads to the case, one for the external network and the second to connect to Eth8.
Used a USB-Serial adapter and ran flat terminal cable through one of the V vents on the front for the console port. Yes, I could have used the GPIO for this but I had reasons to not to.
Connected a RTC to the NanoPi to keep time while power is disconnected. I may pull this out before finishing, I haven’t decided yet.
So.. OOB console and able to NetInstall should the need arise in the future, self-contained in the CCR.
I made a few more adjustments before I called this finished.. I added a panel mount microSD card reader on the back so the microSD card for the SBC can be changed without opening the system and I added a small on-off switch to the front so the SBC can be powered off, to change the memory card, without needing to power off the CCR. With the power switch added I need to separate the power from the SBC and network switch. I soldered the UBEC output to the front switch and network switch power cable. I moved the CCR’s fans to the two alternate connections (wires were not long enough) so I could use the ground pins for the switch and SBC.
Lessons for next time... I should have used two UBECs and put the ideal-diodes after the UBECs instead of before.