A speed controlled fan, with speed control already baked into Linux and the firmware. With PoE if one chooses to use it, pre-assembled, tested, with warranty, and with an easy to use HAT fitting, and all the fixtures.
I'm not aware of any plans to do that at this point. Is there any information in particular you're looking for?hippy wrote: Is it intended that the schematics for the PoE HAT will be published ?
No issues with having power on both or either end when the HAT is attached.hippy wrote: Or, to allow a Pi 3B+'s use both when PoE is available and when it isn't.
When the PoE HAT is fitted; is it safe to use PoE while also supplied power via micro-USB or will that cause damage to the Pi etc?
No problem with this either. It could be connected to an older pi to be used as a fan as well. Since older pis run hotter, it's likely the fan will work harder on those models.hippy wrote: Is it possible to connect the official PoE HAT to a Pi 3B+ and power the Pi through the micro-USB rather than Power over Ethernet, to allow the PoE HAT to be used purely as a Pi-powered software controlled fan controller ?
I was really after 'the full power regulation circuit'', but 'the whole lot' would satisfy my curiosity.
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