The PMIC in the BeagleBone will go into shutdown, if the DC supply voltage goes below 4.5 Volts, or above 5.5 Volts, even for a few milliseconds.
In use it should be held between 4.75 and 5.25, so you have some margin. If the "lights flickered" then the power supply for the BBB did not have to shut down or loose power, just loose regulation enough to go below 4.5 or above 5.5. The BBB is more sensitive than a lot of devices in that respect. --- Graham == On Thu, Jun 30, 2016 at 3:54 PM, William Hermans <[email protected]> wrote: > But yeah have a look at this: > https://plus.google.com/106867156582775247949/posts/gFPzDcwyWCs The > second image on that post is a really good close up, of what happens to > equipment out here once in a while ;) > > On Thu, Jun 30, 2016 at 1:40 PM, William Hermans <[email protected]> > wrote: > >> Wally, why don't you put shielding around your beaglebone, and see if it >> happens next time. >> >> We've seen very similar reset situations here with PTP WIFI routers ( WDS >> ), from very close lightning strikes we get here every year this time of >> year. Yet, none of our beaglebone's have been affected. >> >> So what's the difference between you, and us ? We live inside a 80' x >> 100' steel building. In other words, all our equipment is shielded, except >> the PTP routers which are outside of the building . . . >> >> On Thu, Jun 30, 2016 at 1:30 PM, Gerald Coley <[email protected]> >> wrote: >> >>> So, on this crash....Does it basically reset or just stop? How do you >>> recover? >>> >>> Gerald >>> >>> >>> On Thu, Jun 30, 2016 at 3:14 PM, Wally Bkg <[email protected]> >>> wrote: >>> >>>> "Well, I don't know where to start. A detailed diagram of the entire >>>> system hookup would help. >>>> >>>> Gerald" >>>> >>>> Being in active use for ~25 years and hooked to a variety of computers >>>> as the years have passed, its never been a problem, but the best I could do >>>> would be a scan of the diagrams I've built it from. Its very repetitive, >>>> four basic interface circuit designs repeated 2, 4, 8, 16 times. But I may >>>> get desperate enough to do this, eventually. >>>> >>>> But it acted as if the power button had been held down and just shut >>>> off, and there was minimal disturbance to lights (mix of incandescent, CF, >>>> and LED) and the various USPes around the house, so I'm thinking maybe EMP >>>> sensitivity in the power controller chip. Its an old house (built circa >>>> 1950), but this outlet is one that I ran a 12ga stranded wire straight from >>>> the outlet to the grounding rod at the service entrance when we first moved >>>> in to give me a good ground back in the days I did a lot of hardware work >>>> -- remember the days of wire-wrapped S-100 bus prototypes :) >>>> >>>> OTOH, as I've upgraded the security cameras to HD I've reused the SD >>>> camera wiring to add additional PIR motion detectors, and I just discovered >>>> (after posting this thread) I'd one added PIR unintentionally powered from >>>> a different UPS (but they are all on the same breaker and safety ground >>>> connection), so I'll see if it happens again. This had been the case for >>>> the first thunderstorm crash a few months ago as well. >>>> >>>> -- >>>> 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/6cc15654-ade8-4aea-821b-c7bed75f5575%40googlegroups.com >>>> . >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >>> >>> -- >>> Gerald >>> >>> [email protected] >>> http://beagleboard.org/ >>> [email protected] >>> >>> -- >>> 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/CAHK_S%2Be95AW5w7o5gwcyvnULgy_3cvVqOVMOmj30g-P5tJF3Ag%40mail.gmail.com >>> <https://groups.google.com/d/msgid/beagleboard/CAHK_S%2Be95AW5w7o5gwcyvnULgy_3cvVqOVMOmj30g-P5tJF3Ag%40mail.gmail.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 a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/l8hri0SzSKE/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/CALHSORrnE%2BbWWhr6soH1S6XOecSCHshoysY9aOO_AajN_S-TEw%40mail.gmail.com > <https://groups.google.com/d/msgid/beagleboard/CALHSORrnE%2BbWWhr6soH1S6XOecSCHshoysY9aOO_AajN_S-TEw%40mail.gmail.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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CANN_KV4Wp1FirbkUhfesQpXkNTONxacpxr7pM2yDSzykHK7cag%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
