even when pressing (and holding) the power button on the board, it wont turn on. there is around 200mV drop shown on my voltmeter but i am still around 5V. it boots up automatically upon hooking up to my source. ive tried looking at other applications where an LM317 was used, for a beagle bone power supply.
Rizalino de Guzman > On Feb 19, 2016, at 4:32 PM, Chris Morgan <[email protected]> wrote: > >> On Friday, February 19, 2016, Rizalino de Guzman >> <[email protected]> wrote: >> also, as of this writing, the Beaglebone is the only load connected to the >> custom power supply. the lab power supply is not showing any current draw. >> >>> On Friday, February 19, 2016 at 4:06:10 PM UTC-8, Rizalino de Guzman wrote: >>> Hello, >>> I am currently trying to build a power supply based on an LM317 to provide >>> different voltage outputs, powered by a single voltage source. One of the >>> loads is a Beaglebone Black. I'm curious as to why my beaglebone black does >>> not turn on even when my p/s output is a steady 5V (give or take. my >>> simulations show 4.6V while my actual circuit produces around 5.3V). I'm >>> attaching a schematic of my LM317 power supply. When I hook up the >>> beaglebone on a DC power supply, it turns on. Any help would be >>> appreciated. 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 [email protected]. >> For more options, visit https://groups.google.com/d/optout. > > How does it behave if you press the power button on the bbb after attaching > and turning on your supply? Any leds come on? > > Chris > > -- > 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. -- 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.
