Re: [beagleboard] Re: Failure Rate of Beagle Boards
On Tue, Oct 22, 2013 at 12:32 PM, Travis James halogrunt1...@gmail.com wrote: I have been managing 9 beaglebones as a part of a project I am working on, and so far, all 9 of them have initially worked, but I now have 6 functional units. 2 of them succumbed to the power failure issue (plug in beaglebone, power led blinks, nothing happens, pressing power button blinks the power led), and one of them fails to read from the SD card. I am relatively disappointed that 3 out of 9 has failed over the course of a few months, but i dont think I represent a big enough sample set to reflect the reliability of all beaglebones. I think there should be some well defined statistics to define the reliability of these platforms... So... What shows up over the serial port when booting these failed boards? pastebin.com the serial log... Regards, -- Robert Nelson http://www.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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] Re: Failure Rate of Beagle Boards
The power related issues are not necessarily the fault of the device its self. It could be a bad ground on your part, or other new software that you've installed or started to use. When the BBB has blinking LEDs ( CPU heartbeat ) this implies that it does in fact work. SO either you're not waiting long enough, or dropbear( assuming ssh ) has lost its mind again. Yet there are other possible causes as well. Get a serial debug cable as Robert suggests, and see what is happenign at the console / uboot prompt. On Tue, Oct 22, 2013 at 11:11 AM, Gerald Coley ger...@beagleboard.orgwrote: Our return rate is .02%. Where 75% of the failures are customer damage. It also depends a lot on how they are being used, what is connected if it meets the requirements) and the power supplies used to power them. Gerald On Tue, Oct 22, 2013 at 12:32 PM, Travis James halogrunt1...@gmail.comwrote: I have been managing 9 beaglebones as a part of a project I am working on, and so far, all 9 of them have initially worked, but I now have 6 functional units. 2 of them succumbed to the power failure issue (plug in beaglebone, power led blinks, nothing happens, pressing power button blinks the power led), and one of them fails to read from the SD card. I am relatively disappointed that 3 out of 9 has failed over the course of a few months, but i dont think I represent a big enough sample set to reflect the reliability of all beaglebones. I think there should be some well defined statistics to define the reliability of these platforms... On Thursday, July 25, 2013 1:14:35 AM UTC-4, jus...@virtualpowersystems.com wrote: Hi all, I was wondering if anyone has any statistics on average failure rate and reliability of Beagle Bones. The failures can be due to either hardware or software. Thank you very much, Justin -- 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/groups/opt_out. -- 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/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] Re: Failure Rate of Beagle Boards
Not really scientific, but I have used around 50 Beagles of various pedigree/version. I have only had to return one for repair, and that was I think due to accidentally applying 5V to a GPIO pin. :-( Keep up the good work Gerald et al. :-) Dave. On 13-10-22 02:06 PM, William Hermans wrote: The power related issues are not necessarily the fault of the device its self. It could be a bad ground on your part, or other new software that you've installed or started to use. When the BBB has blinking LEDs ( CPU heartbeat ) this implies that it does in fact work. SO either you're not waiting long enough, or dropbear( assuming ssh ) has lost its mind again. Yet there are other possible causes as well. Get a serial debug cable as Robert suggests, and see what is happenign at the console / uboot prompt. On Tue, Oct 22, 2013 at 11:11 AM, Gerald Coley ger...@beagleboard.org mailto:ger...@beagleboard.org wrote: Our return rate is .02%. Where 75% of the failures are customer damage. It also depends a lot on how they are being used, what is connected if it meets the requirements) and the power supplies used to power them. Gerald On Tue, Oct 22, 2013 at 12:32 PM, Travis James halogrunt1...@gmail.com mailto:halogrunt1...@gmail.com wrote: I have been managing 9 beaglebones as a part of a project I am working on, and so far, all 9 of them have initially worked, but I now have 6 functional units. 2 of them succumbed to the power failure issue (plug in beaglebone, power led blinks, nothing happens, pressing power button blinks the power led), and one of them fails to read from the SD card. I am relatively disappointed that 3 out of 9 has failed over the course of a few months, but i dont think I represent a big enough sample set to reflect the reliability of all beaglebones. I think there should be some well defined statistics to define the reliability of these platforms... On Thursday, July 25, 2013 1:14:35 AM UTC-4, jus...@virtualpowersystems.com mailto:jus...@virtualpowersystems.com wrote: Hi all, I was wondering if anyone has any statistics on average failure rate and reliability of Beagle Bones. The failures can be due to either hardware or software. Thank you very much, Justin -- 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 mailto:beagleboard%2bunsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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 mailto:beagleboard%2bunsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out. -- 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/groups/opt_out.
