probably you used a wall adapter with integrated monitoring chip which does not allow to overcurrent 500mA. You should use a dumb version of such device when it simply supplies as much power as it can :)
2015-08-11 14:42 GMT+03:00 William Hermans <[email protected]>: > *you can power a board by USB but from a special wall adapter with an >> integrated USB socket. As an option* > > > Yes, and we tried it. It was not enough power. It is also my understanding > that powering the BBB in such a way can not give more than 500ma. It was > not enough power. the canbus would not function at all part of the time. As > soon as I applied power via barrel jack. Then problem went away. > > On Tue, Aug 11, 2015 at 4:35 AM, Maxim Podbereznyy <[email protected]> > wrote: > >> you can power a board by USB but from a special wall adapter with an >> integrated USB socket. As an option >> >> 2015-08-10 23:58 GMT+03:00 William Hermans <[email protected]>: >> >>> Hi Maxim, >>> >>> The reason why we did this is that the board in question was mounted to >>> a piece of wood, that is screwed into a wall. So grounding Vbus would not >>> have been easy. Vusb for us was really easy. Solder the outside pins on a >>> USB A socket to the outer shielding, then plug a MALE A to mini B cable to >>> the socket, and BBB. Took a total of like 5 minutes . . . >>> >>> Normally I do not worry about any of this, and use USB power. Except >>> this time for this project we needed the canbus running, and powering via >>> USB cause the canbus to be less than reliable. >>> >>> On Mon, Aug 10, 2015 at 9:36 AM, Maxim Podbereznyy <[email protected]> >>> wrote: >>> >>>> William, or short Vusb to 5V, the result is the same - total stability. >>>> You can do it if you need to enable the USB-Host function at USB0 >>>> >>>> 2015-08-08 23:22 GMT+03:00 William Hermans <[email protected]>: >>>> >>>>> So far shorting Vusb to ground seems to be doing the trick. We'll give >>>>> it a couple days to be "sure". Prior to shorting Vusb to ground, this >>>>> linux >>>>> image would reboot several times a day ( 4-5 ) >>>>> >>>>> william@xanbustester:~$ uptime >>>>>> 13:20:26 up 15:28, 3 users, load average: 0.01, 0.02, 0.05 >>>>>> william@xanbustester:~$ uname -r >>>>>> 4.2.0-rc4-bone2 >>>>>> >>>>> >>>>> >>>>> >>>>> On Fri, Aug 7, 2015 at 5:31 PM, William Hermans <[email protected]> >>>>> wrote: >>>>> >>>>>> Starting new post . . . >>>>>> >>>>>> On Fri, Aug 7, 2015 at 5:19 PM, William Hermans <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> Ok, I'm stuck in a boot loop, what you see above is what I keep >>>>>>> getting. Let me explore some. >>>>>>> >>>>>>> On Fri, Aug 7, 2015 at 5:17 PM, Robert Nelson < >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> On Fri, Aug 7, 2015 at 7:13 PM, William Hermans <[email protected]> >>>>>>>> wrote: >>>>>>>> > These TI kernels support nfsroot ? >>>>>>>> >>>>>>>> They should. ;) >>>>>>>> >>>>>>>> bone kernel: bone patchset + mainline >>>>>>>> ti kernel: bone patchset + ti patchset + mainline.. >>>>>>>> >>>>>>>> Regards, >>>>>>>> >>>>>>>> -- >>>>>>>> Robert Nelson >>>>>>>> https://rcn-ee.com/ >>>>>>>> >>>>>>>> -- >>>>>>>> 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. >>>>> >>>> >>>> >>>> >>>> -- >>>> LinkedIn - http://www.linkedin.com/in/maximpodbereznyy >>>> Company - http://www.linkedin.com/company/mentorel >>>> Facebook - https://www.facebook.com/mentorel.company >>>> >>>> -- >>>> 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. >>> >> >> >> >> -- >> LinkedIn - http://www.linkedin.com/in/maximpodbereznyy >> Company - http://www.linkedin.com/company/mentorel >> Facebook - https://www.facebook.com/mentorel.company >> >> -- >> 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. > -- LinkedIn - http://www.linkedin.com/in/maximpodbereznyy Company - http://www.linkedin.com/company/mentorel Facebook - https://www.facebook.com/mentorel.company -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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