The beaglebone had a power up issue. Rev A6A fixed it: >From the wiki<http://www.elinux.org/Beagleboard:BeagleBoneBlack#Revision_A6A> : "Changed C24 to a 2.2uF capacitor. This extends the reset signal to solve an issue where some boards would not boot on power up."
I have around 40 beaglebones running and this was a pretty serious problem for us. Our users guides have a somewhat embarrassing "If the board doesn't boot, unplug the power and wait 10 seconds." I have around 20 Rev. B boards, and I haven't seen one fail to power up. You could always rework the board yourself! :D On Friday, May 2, 2014 5:14:03 AM UTC-7, Gerald wrote: > > Sounds like you may have an issue with your board. You can always send it > in on an RMA and we can look at it. > > Gerald > > > > On Thu, May 1, 2014 at 10:51 PM, DLF <dumb.lo...@gmail.com > <javascript:>>wrote: > >> Hi and thanks for your reply >> >> Well this is not true for me (my BBB won't boot directly with DC (Rev >> A5C))... but it is not a deal breaker for me. >> >> As this is Richard's thread I'll back out now I don't want to be a >> budinski. >> >> BTW, Gerald & Robert, a friendly thank-you for all the work with BBB. >> I've learned a few things along the way and I appreciate your efforts. >> >> merci, >> >> >> >> On Tuesday, 29 April 2014 19:39:03 UTC+2, Gerald wrote: >> >>> Do not touch the power button unless you plan to turn it off. The SRM is >>> correct. >>> >>> To power on all you have to do is plug in the power, either USB or DC. >>> >>> Gerald >>> >>> >>> >>> On Tue, Apr 29, 2014 at 12:35 PM, DLF <dumb.lo...@gmail.com> wrote: >>> >>>> Hi, >>>> >>>> now I am confused because I thought it was normal procedure to hold the >>>> power button after inserting the 5V jack. (as noted by Richard-tx) >>>> >>>> I always have to hold the power button after inserting the jack. When >>>> I insert the jack, I see a brief blue light from the pwr LED next to the >>>> 5V >>>> connector and then nothing. If I hold the power button it boots. - every >>>> time. >>>> >>>> This thread lead me to believe the power button was the right way to do >>>> it ! https://groups.google.com/forum/#!topic/beagleboard/FGeL6jzOcB0 >>>> >>>> however the SRM indicates otherwise .... :( >>>> >>>> 7. Booting the Board >>>> As soon as the power is applied to the board, it will start the booting >>>> up process. >>>> When the board starts to boot the LEDs will come on in sequence as >>>> shown in Figure >>>> 15 below. It will take a few seconds for the status LEDs to come on, so >>>> be patient. >>>> The LEDs will be flashing in an erratic manner as it boots the Linux >>>> kernel. >>>> >>>> >>>> It is not the end of the world for me, but just interested all the same. >>>> >>>> cheers, >>>> >>>> >>>> On Monday, 28 April 2014 14:17:43 UTC+2, Gerald wrote: >>>> >>>>> It is supposed to power up automatically when you plug in the DC cable. >>>>> >>>>> Gerald >>>>> >>>>> >>>>> >>>>> On Sun, Apr 27, 2014 at 10:20 AM, Richard-tx <rich.a...@gmail.com>wrote: >>>>> >>>>>> The way my BBB works is like this: >>>>>> >>>>>> To power up the BBB from OFF when powered from the 5 v jack, I have >>>>>> to press the power button. >>>>>> To power up using the mini-usb connector, all I have to do is turn on >>>>>> the USB power. >>>>>> >>>>>> My question is this. Is there a way to have the BBB automatically >>>>>> power up when power is applied to the +5 jack? >>>>>> >>>>>> . >>>>>> >>>>>> -- >>>>>> 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 beagleboard...@googlegroups.com. >>>>>> >>>>>> 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 beagleboard...@googlegroups.com. >>>> 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 beagleboard...@googlegroups.com <javascript:>. >> 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
