I think his cable is just stealing another 500mA from another USB port, because older disks tended to exceed the 0.5A power draw on startup.
On Fri, Oct 24, 2014 at 12:59 PM, Gerald Coley <[email protected]> wrote: > The problem with what you are trying to to do id not current. It is the > fact that the 5V rails do not come from the same source. In a PC the 5V is > the same for both ports. > > You would be better off powering the HDD from an external source totally > and not using the 5V rail on the BBB USB connector to provide the power. > > Can you send a picture or model number of this cheap cable yo are > referring to ? It does not sound like a cable to me, but a USB HUB. But I > would need to see if first. > > Gerald > > > On Fri, Oct 24, 2014 at 11:50 AM, <[email protected]> wrote: > >> >> I need to hook up a HDD to my Beaglebone Black running Ubuntu. I already >> configured it to mount everything automatically and it already worked with >> a USB drive. >> I found this cheap USB cable with a Y form that would provide the power >> the HDD. There's a main USB cable with all the 4 connections and a smaller >> cable that is connected to the + cable and the ground. >> I'm going to power the HDD by plunging the smaller cable into an USB >> current adapter guaranteed 1A output and the one with the data connection >> to the Beaglebone. >> Before any testing i found that there is NOT any kind of diode between >> the two cables, so I'm worried if it's still safe to set it up I has >> intended. >> >> Anyone can help me? Thank you in advance! >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
