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Jim Klimov via Nut-upsuser <nut-upsuser at alioth-lists.debian.net> writes: > Did anyone trod these side paths yet, any learnings? :D To me, the answer to power for little things is increasingly POE. I think there are POE ejectors that provide adequate USB-C power. You need 802.3at (POE+) surely, but that's normal these days.

Follow-up: * Powering the Raspberry Pi5 from an USB-C port wired on the motherboard was much more promising, it survived over 8 hours building NUT in a loop (in a tmpfs). And in the morning I found it turned off (red light on the Pi). * Per https://stackoverflow.com/questions/4702216/controlling-a-usb-power-supply-on-off-with-linux it seems not possible to programmatically truly power-cycle USB

Kelly Byrd <kbyrd at memcpy.com> writes: > With USB-C ports and cables, there are a ton of profiles, I don't know what > the new Pi's support, but likely something like 3A @ 5V, 9V, or 12V over > USB-C Up to the RPI4, I was pretty sure there wasn't PD, just 5V and it drew what it drew, and you hoped that the supply was big enough. It seems the RPI5 will use PD if

FWIW, a few lessons learned: * Different USB-A sized ports (even if marked USB-3.2) did not prove a stable source, with Pi5 occasionally turning off or rebooting. Sort of behaved well for days, but as soon as I added load like package installs or NUT builds, it did not survive 5 minutes... * Might be the MoBo turning off or cycling the port due to "overload"?.. * Tried the

I guess I should scratch the idea about fan sockets as the power source: they are rated typically at 0.2A each, so fan headers should be expected 1A max (3A in some vendors/models), well under the 5A that the RPi5 wants. Jim On Sat, Sep 28, 2024 at 11:52?AM Jim Klimov <jimklimov+nut at gmail.com> wrote: > Follow-up: > > * Powering the Raspberry Pi5 from an USB-C port wired on

That, or use a low current source such as the fan header to control a 5v switch feeding the pi from a different source. Same net result, and no excess loads on your mobo. (Might be able to work this into the case using a spare power supply connector to feed it . . .) Still have not figured out why though, but that's not relevant to what you are trying to accomplish. On September 28, 2024