On 10 January 2018 at 16:29, steve-ALUG@hst.me.uk wrote:
Possibly irrelevant, but there are UPSes and Battery backup systems that you can plug in to a Pi, or even Power Over Ethernet.
Not irrelevant at all, thanks for the info.
I have played with a couple of these in the past. They tend to get a bit "fun" when you want to shut the unit down or power it up from shutdown. I can't remember exactly what the problems were but they're reasonably well documented.
For my use case though, loss of power likely means "I want to turn it off" rather than "temporary power loss". Having something headless makes proper shutdown harder, and I can't rely on someone using whatever process I do provide, so making it as robust against unplanned power cycling as I can is a plus. Losing that for something like wifi (which really shouldn't need to regularly write to /etc like wicd does) isn't a road I want to go down.