> Could you point out a hardware for this kind of use-case? I would liek to > have something smaller than a regular-Pi SBC.
I'm still playing with this kind of stuff. Good luck on your journey, but it will be a rough ride. You already mentioned some issues. I have/had a pair of Raspberry 3B and also a pair of Pine64 SBCs, running OpenBSD 7.x and CARP failover for experimental things. Working, but not as reliable as I would like. You seem to aim at even smaller boards like that, and newer ones should match the specs of Raspi3B or Pine64. However: - there is no fine "sysupgrade" for these platforms, so you need to reinstall every time - which means fiddling with non-OpenBSD "uboot" and EFI definition files - consider creating a network boot infrastructure - these devices are very sensitive to power voltage instabilities, triggering spontaneous reboots. You may want to run them from stable USB power source - I doubt this can be reasonably battery-powered, over longer time periods - storage like SD-card or eMMS draw extra power during operation, writes may be unreliable during voltage drops - storage like SD-card or eMMS will wear out and die hard, sooner or later - Wifi hardware may not be supported - RS232 serial usually provided (and working) by bus pinout, but you need to add a FTDI232 or CH340 adapter That said, I'd like to hear about it if you find interesting hardware :) Olaf
