> > *Thanks for the info about the input voltage sensitivity of the > Beaglebone, good chance this is the real issue, especially as there was a > good chance for "ground bounce" between different parts of the system from > my mistake in powering one of the PIR sensors off the "wrong" UPS. Time > will tell. If it happens again now that I've corrected that mistake, I'll > look into powering the BB with a better supply, and/or look into adding the > backup battery option.* >
If the cause is in fact ESD somehow triggering the Beaglebone reset. Adding a battery won't help unless you remove the acpid package. However I will add that pressing the power button, and input voltage going away both fire the same interrupt. So if it was power momentarily dipping below the 5v threshold. Adding a battery should fix that. Do note, though unless you want your board to power down immediately, you'll want to remove the acpid package . . . So, just to be 100% clear. the acpid package ( service ) triggers both button press, and 5v input voltage shutdowns. Remove it, and neither should be triggered afterwards. On Sun, Jul 3, 2016 at 8:13 AM, Wally Bkg <[email protected]> wrote: > Thanks for the info about the input voltage sensitivity of the Beaglebone, > good chance this is the real issue, especially as there was a good chance > for "ground bounce" between different parts of the system from my mistake > in powering one of the PIR sensors off the "wrong" UPS. Time will tell. > If it happens again now that I've corrected that mistake, I'll look into > powering the BB with a better supply, and/or look into adding the backup > battery option. > > Due to the location, shielding the BB in a metal box is way too invasive > to try. Since the RPi2 has had no issues either time I consider the > evidence that shielding would help to be shaky at best. > > I got it booted again by unplugging the BB wal-wart 5V supply and plugging > it back in. As a last resort I can add a watchdog and relay to interrupt > the BB power and re-apply it after ~30 seconds. > > -- > 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]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/023e9e06-2c70-4980-a197-ed9435c7a90c%40googlegroups.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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORrdSAFGvf%2Bzkf0K7mkR-G4rWWc1-4rvArjU%3DeOHDJwP9A%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
