This thread seems related, but I'll be happy to start a new one if it makes sense.
Is there a way to configure the plugin such that the PSU stays on through a server restart? Not a reboot of the RPi, obviously. Its just that there are times where I'm experimenting with settings on some plug-ins, and they often require a server restart ... orr the server restarts itself for reasons unknown, but the printer may be operating independently, such as when printing from the SD card.
PS. I'm using a 5V relay that seems to be quite satisfied with 3V3, and GPIO21 for switching (although for some odd reason PSU Control's configuration page always shows "G-Code Command" even though I'd previously selected GPIO Pin). Sensing is set to internal.