@linux_mclinuxface in the past I've put in probably unnecessary fuses to put my mind at rest about things that might get shorted etc.

I've always avoided mains powered things though, I don't feel I have the skills for that

@linux_mclinuxface I have some 3d printed desk fans (based on PC fans) that I use overnight because they're really quiet, they have DC-DC converters and other boards I put together in them. I've never really thought about or been bothered about how reliable they might be

Of course having read this I am now, but I wasn't