I've worked on a lot of boards over the years, so I have a strong sense for the kinesthetic issues that even custom electronics can have. I've had this problem myself (and am still having it from time to time).
My spider sense tells me that the BBB is right at the accepted maximum current draw for a standard USB port AND that it might be further exacerbated by having a lot of peripherals (even independently powered ones) attached to it. I would recommend getting a 5V 1A (a FULL 1.0 Amp) supply (like the small bricks that come with tablets or Kindles) and feeding it through the coaxial connector just to make sure it always has enough juice no matter what the situation. Yeah, it'll run off of a USB port, but I can tell its a bit of a power hog. Just how it flashes and stuff reminds me of a power-starved board. On Thursday, January 26, 2017 at 1:29:54 PM UTC-7, Justin Pearson wrote: > > I'm using my Beaglebone Black to drive a DC motor and read a rotary > encoder: > > > https://github.com/justinpearson/Beaglebone-motor-from-command-line/blob/master/Images/lil-motor-setup.jpg > > Last night when I rebooted my BBB, it shut down but didn't reboot: None of > the 4 blue LEDs lit, although the blue LED by the 5V power plug did light > up when I plugged it in. > > This behavior persisted across several plug/unplug cycles of the 5V power > adapter. I was afraid I bricked my BBB. > > In desperation, I unplugged all the I/O (P8_33,34,35, P9_29,30,31). Then I > plugged in the 5V power and it booted! > > Any idea why that happened, or how I could fix it in the future without > unplugging all my I/O? > > Thanks, > Justin > -- 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/46a07225-3664-4003-847c-30a36a40d136%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
