usb powered hub pi not booting | Mainsail | Page 1

idle crow Aug 27, 2023, 9:02 AM

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i have a buck converter that powers a usb hub and the usb hub is connecterd to the pi. as long as power is plugged into the hub via buck pi is not booting so every time i wanna start the printer i have to unplug the power of the hub from the buck start the printer and after put back the power cable to the hub

glacial needle Aug 27, 2023, 9:17 AM

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What voltage does your buck converter output?

idle crow Aug 27, 2023, 10:02 AM

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5v

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5v is what the hub uses for power

glacial needle Aug 27, 2023, 10:04 AM

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Then I'm already out of this 😄
Just wanted to confirm that you aren't using something like 12V ^^

idle crow Aug 27, 2023, 10:06 AM

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:)) no no i have another buck more advanced for powering the pi and it has a display and I can see that pi doest boot because is showing on that buck 0 amps

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From what I red on google it is a will known issue they do sent power back to pi and that why pi doest start

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I hâd a similar issue with the controller board and for that I hâd to remove the jumper that allows controller board to send back current to devices via usb

safe radish Aug 27, 2023, 2:50 PM

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On the hub you can only isolate it power pins of the usb A cable

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Use 2 small stripes of capton tape

idle crow Aug 28, 2023, 9:06 PM

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⁰p@safe radish so basically the idea is to allow between hub and pi only data +- cables and bypass the power ones right?

safe radish Aug 29, 2023, 3:14 PM

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Yes

idle crow Sep 1, 2023, 9:21 AM

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i covered the 5v pin still doesnt boot do i have to cover the ground as well?

safe radish Sep 1, 2023, 1:24 PM

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Yes

#usb powered hub pi not booting