Gerald, hey question: This design you're working on will not stand in the way of us users doing our own thing. Will it ? I'm assuming you'd be implementing this into the next revision, or even board, but . . . Yeah assumptions . . .
On Wed, Sep 10, 2014 at 12:45 PM, Gerald Coley <ger...@beagleboard.org> wrote: > I am working on this in my spare time. Basic concept is that you need > enough power after you pull power to give the PMIC time to ramp the voltage > rails down in order so as not to violate the specification of the > processor.. > > Best idea so far is a super cap on the battery connections. That would > require SW to start the shutdown process once power was detected as being > removed. I am trying to find a way to do this that won't add too much cost > and that does not rely on the SW to start the shutdown process.. > > Gerald > > On Wed, Sep 10, 2014 at 2:34 PM, Chris Morgan <chmor...@gmail.com> wrote: > >> I would be interested in the outcome of this investigation. We are >> using the bbb in a commercial setting, through CircuitCo, and I'm not >> sure what the power down ramp will look like. It is possible (and >> likely) that the voltage falloff will be slow compared to a quick >> unplug, but our devices power up and down relatively frequently. >> >> Any guidance on this would be appreciated. >> >> Chris >> >> >> >> >> On Wed, Sep 10, 2014 at 3:17 PM, Gerald Coley <ger...@beagleboard.org> >> wrote: >> > >> http://www.elinux.org/Beagleboard:BeagleBoneBlack#Improper_Power_Down....All_Revisions >> > >> > Gerald >> > >> > On Wed, Sep 10, 2014 at 1:35 PM, <ursus.mars...@gmail.com> wrote: >> >> >> >> I have four Beaglebone Blacks that have "died". They all exhibit the >> same >> >> behavior. When the power is applied the "Power LED" flashes on then >> off. >> >> Each time power is applied this short sequence repeats. My first guess >> is >> >> that the power conditioning circuit is failing to produce/receive a >> "power >> >> good" signal. >> >> >> >> My question is: Have others experience the same issue? Is there a path >> to >> >> resurrect these four boards? >> >> >> >> Thanks. >> >> >> >> -- >> >> 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. >> > >> > >> > -- >> > 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. >> >> -- >> 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. >> > > -- > 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. > -- 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.
