only way to be sure it use the battery input on the BBB and the acpi shutdown http://protofusion.org/wordpress/2014/08/beaglebone-black-soft-power-off/ problem is that once shut off via a shutdown now -h something must reset the processor to get it to boot. also if the power outage is extended or you unplug to set on shelf for extended periods the LI battery will run down fast because the pmic will continue to suck power off the battery the external circuit must be able to disconnect the battery if power is removed for long periods.
other way is a read only file system with a ram overlay as has been mentioned on the list. On 5/16/2016 7:03 AM, Jim S wrote: > Recently lost power and corrupted my sd card badly and had to start > over. I have seen the battery "UPS" for BBB type but don't need > another battery. I have a small APC UPS for the BBB, DSL modem, a > VOIP box, and a router but the UPS does not have a comm port to report > status to the BBB. Would like to set up so that when the AC power > drops the BBB will shutdown in 5 minutes (most outages are shorter but > this is still much before the UPS runs out of power). If the power is > restored before that continue to run. When power is restored start > up. With an additional wall wart power supply I could generate a > logic level signal for when the AC line is ok (input to UPS). Does > anything like this exist? If not, anything similar enough that I > could hack up the scripts a bit and get there? Would rather not have > to start from scratch. > -- > 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+unsubscr...@googlegroups.com>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/ed9d6695-08ab-48b6-a3dc-8e645b8f4e4c%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/ed9d6695-08ab-48b6-a3dc-8e645b8f4e4c%40googlegroups.com?utm_medium=email&utm_source=footer>. > 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/f1949535-1fa1-b35f-3058-ad7a5ce2871b%40gmail.com. For more options, visit https://groups.google.com/d/optout.
