Posted: 12/18/2025 8:41:22 AM EDT
[Last Edit: raverill][Edited]
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Anyone here powering a raspberry Pi5 over GPIO pins? If so can you send me a pic of your setup and parts used? I’ve purchased 2 separate usb-c boards and still can’t get it to power on. Latest trial was soldering on this usb-c PD board. Powers on fine over usb-c port on the pi5 but I need this port for an OTG usb-c accessory OS Lineage 22.2 Attached File |
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Originally Posted By Moondog: I read the Pi5 can require up to 5A of power. Can the pin header handle the current? Some people say to use two 5V wires (pins 2 and 4) and two ground wires (pins 6 and 14), to halve the current on the pins. Another issues is PD power supply, negotiated power with the Pi5 ( 5V at 3amps or need 9V at 3amps). I ordered a new usb-c board that has some 5.1kohm resistors which basically tells my PD power supply I’m power hungry feed me 5.1V. We’ll see if it works |
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Update if anyone is trying to power their pi5 using gpio pins you need to use a usb-c board with two 5.1kohm resistors, this forces the PD power supply to supply 5.1V and the pi5 will power on. Reference pic for the usb-c board I used. R1 and R2 are the 5.1kohm resistors Attached File |
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Originally Posted By raverill: Some people say to use two 5V wires (pins 2 and 4) and two ground wires (pins 6 and 14), to halve the current on the pins. Another issues is PD power supply, negotiated power with the Pi5 ( 5V at 3amps or need 9V at 3amps). I ordered a new usb-c board that has some 5.1kohm resistors which basically tells my PD power supply I’m power hungry feed me 5.1V. We’ll see if it works After I posted this, I was looking at the GPIO header and came up with the same conclusion. Standard pc power supplies have multiple rails to distribute power |
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Originally Posted By farfromhome: If possible, why not use a POE hat? Waveshare sells a hat rated at 5 amps |
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The waveshare poe + nvme hat is pretty slick functionally but the fan is crappy and it only kind of fits in the pi case with modification. I am going to experiment with the hackergadget poe + nvme hat because it is supposed to fit the pi case without modification. However, I expect similar fan issues (same size fan will have similar noise issues notwithstanding quality) and might try different cooling solutions. In the end it's probably all academic as I expect to move my pis, nas, etc out of my office. |