I can't answer your question. I do not have enough information.. If you would like to send me a schematic I can take a look at it and see fi I can see an issue,
You might also check here: http://www.elinux.org/Beagleboard:BeagleBoneBlack#Improper_Power_Down....All_Revisions http://www.elinux.org/Beagleboard:BeagleBoneBlack#Expansion_Header_Usage Gerald On Mon, Jul 21, 2014 at 7:07 PM, Carol Hsin <carolh...@gmail.com> wrote: > I'm using a ULN2003AN to actuate a 24V/3W solenoid valve. After I set pin > P8_11 to HIGH, the solenoid clicked and its power led turned on, then the > BBB died. I tried turning the BBB power on again, but all that happens is > that the power led flashes briefly. I had checked everything w a multimeter > before hooking up the system. The solenoid is 177 ohms; hooked to 24V, it > reads 0.151A -- which is under ULN2003AN's .5A max and matches its > datasheet (AVS-5322-24D on > http://www.automationdirect.com/static/specs/nitradirectionsolenoidavs5.pdf). > > > There shouldn't be a problem. And the ULN2003AN isn't broken. The BBB and > transistor worked fine for a more expensive solenoid valve (VUVB-L: > http://www.festo.com/net/SupportPortal/Files/17267/Ventile_en.pdf). I've > tested it with that valve and the multimeter read 374 ohms; hooked to 24V, > it reads 0.062A. > > I don't understand why the BBB died. It shouldn't have because I was > careful about checking the datasheets and then w the multimeter. Would > someone please tell me what went wrong? I can't see any mistakes. > > > -- > 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.
