Setup that I was on mind is a little different, but I think your setup works well.
In my setup the HUB is connected directly to the UPS, then the cables go to raspberry and device. In your setup the HUB is connected directly to the raspberry, then the cables go to UPS and Device. Its Ok? In both configurations I need the same things: Male B->female A adaptor, HUB and 2 male A-> male A cables. The male A- male A cables have any peculiarity? Can I buy it or make it myself without problems? Thanks a lot for advice. Da: Charles Lepple [mailto:[email protected]] Inviato: martedì 20 gennaio 2015 14:23 A: Maurizio Iacaruso Cc: NUT List Oggetto: Re: [Nut-upsuser] R: NUT and relay on USB On Jan 20, 2015, at 7:43 AM, Maurizio Iacaruso <[email protected] <mailto:[email protected]> > wrote: I connect USB A (female) to USB B (male) adapter -> HUB -> 2 USB wires male to male, one to raspberry and another one to my device. I'm not sure I understand your setup. This should work, using standard USB cables: <- upstream downstream -> <- host device -> A->B A->B Raspberry Pi -> hub -> UPS | \---> device The problem is that there is no equivalent of a "crossover cable" or "null-model adapter" for USB. (I am ignoring USB OTG <http://en.wikipedia.org/wiki/USB_On-The-Go> for the moment, since you want the RPi to talk to the UPS). There are many USB adapter cables out there that will only work for supplying power, or only with point-to-point USB OTG. -- Charles Lepple clepple@gmail
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