hamishcunningham / pi-tronics

Source code for Raspberry Pi GATE projects.
http://pi.gate.ac.uk/
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Mopi to supply power to USB Devices #84

Closed jeberhardt closed 7 years ago

jeberhardt commented 8 years ago

One common problem is that the Raspberry Pi often needs a powered hub when connecting some USB devices.

I was wondering if there was any way to supply the power to the USB hub from the Mopi. This would allow the battery connected to the Mopi to supply power to a powered USB hub without going through the Raspberry Pi itself (which would limit the draw). Ideally, the power to the USB hub would be shut off and get turned on when the Mopi turns off / on the Raspberry Pi.

Thanks!

hamishcunningham commented 8 years ago

in theory yes, but in practise you may end up drawing too much current from mopi :-(

On 23 June 2016 at 16:12, James Eberhardt notifications@github.com wrote:

One common problem is that the Raspberry Pi often needs a powered hub when connecting some USB devices.

I was wondering if there was any way to supply the power to the USB hub from the Mopi. This would allow the battery connected to the Mopi to supply power to a powered USB hub without going through the Raspberry Pi itself (which would limit the draw). Ideally, the power to the USB hub would be shut off and get turned on when the Mopi turns off / on the Raspberry Pi.

Thanks!

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