I have the same issue, already 3 boards has died. any solution, i tried to use optoisolator/pwm and noting. the BBB is a bad board.
Le mercredi 25 février 2015 18:03:24 UTC+1, [email protected] a écrit : > > Identical problem this morning: BBB boots fine when powered by USB, but > not when powered by a 2.0 mA rated 5.0 V DC power supply (nicked from some > other device). BBB power LED blinks continuously. This power supply has > worked with this BBB in the past. > > Mike. > > On Friday, January 23, 2015 at 8:44:59 PM UTC-8, [email protected] wrote: >> >> I had a similar problem- my power LED would just continue blinking when >> connected to a 5V power source. This meant there was something wrong. >> First, I checked if my BBB was still alive. To find that, I connected my >> board to a computer via USB. Surprisingly, this time power LED turned on >> normally. Then to make sure that everything was properly, I ran some >> program as given in the BB website http://beagleboard.org/getting-started. >> I was happy to see, the programs on the website worked just fine on my >> board. Thus, I was able to conclude that strangely, my BBB board didn't >> like 5V external power source! >> >> On Friday, November 22, 2013 at 6:41:41 AM UTC-8, Bert Lindner wrote: >>> >>> >>> Just had a 5V powered Beaglebone Black seemingly die on me. First the >>> power led kept blinking, then after removing the (BB Toys CAN) cape the >>> power led would flash just once after applying power. Looking back in >>> previous threads this seemed to mean I killed the board somehow; there was >>> also a GPS module attached to one of the UARTs and a probably power hungry >>> USB wlan stick that I'm trying to get to work, so a power hungry setup. >>> >>> I was ready to declare it dead, it remained just flashing once after >>> repeatedly unplugging and reattaching the power supply. >>> >>> However I noticed the single power led flash would also happen if I >>> pressed the power button (leaving the 5V plug in). Doing that repeatedly >>> seems to have revived the board, will see if new problems occur. For now it >>> behaves normally. >>> >>> Is this expected behaviour? >>> >>> Best, >>> >>> -Bert >>> >>> -- 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]. For more options, visit https://groups.google.com/d/optout.
