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i Would like to create a POE power and ethernet delivery circuit for the pi zero, Setting aside the actual circuit of the POE and ethernet, I am first concerned on two things:

  1. How do i deliver Power to the zero via the GPIO? should i feed 5v to the 5v pins? i assume that by doing this i bypass a fuse so i have to place that in my 5v output.

  2. How do i deliver ethernet data to the zero via GPIO, though SPI ? something that already has native/3rd party software support because i am not experienced in the low levels of linux.

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    "i assume that by doing this i bypass a fuse" -> Yes, but you could instead use a cable end and feed it through the proper jack. Beyond that: raspi.tv/2015/… Those adapters are easy to find online and ~$10. However, even easier are USB ethernet adapters, which should be considerably faster (like 10x). That may complicate the POE angle though.
    – goldilocks
    Commented Nov 16, 2020 at 16:18
  • @goldilocks i am aware with the options you mentioned, but i do not like wires dangling around. True it is considerably easier to take that route. I am willing to take the extra steps for the sake of cleanliness, anyway am still going to create a pcb for the special purpose im using the zero, so its just a few components more. It would also be a great learning opportunity to learn POE circuit i can see that ill be using it more in the future
    – Jack
    Commented Nov 16, 2020 at 16:39
  • @goldilocks the module linked me is great stating point, i can just straight up use that exact same IC, but ill try to do a bit more digging if there is a much recent IC (since that article is 5 years ago)
    – Jack
    Commented Nov 16, 2020 at 16:41
  • You can't "bypass a fuse" because the Pi Zero doesn't have one
    – Milliways
    Commented Nov 16, 2020 at 21:40

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This solution (available on Amazon) might interest you:

UGREEN Ethernet Adapter, Micro USB Ethernet Adapter with 3.3 ft Cable and Power Cord, Compatible with Fire TV Stick/4k/4k Max/Lite, Google Chromecast, Roku Express 4k, Stable and Fast, Plug and Play

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  • how does this supply power to the Raspberry Pi?
    – jsotola
    Commented Sep 20, 2023 at 1:12
  • Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center.
    – Community Bot
    Commented Sep 20, 2023 at 1:12

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