From: Cristian Mitu <[email protected]> Reply-To: "[email protected]" <[email protected]> Date: Sunday, July 6, 2014 at 9:13 AM To: "[email protected]" <[email protected]> Subject: Re: [beagleboard] BeagleBone Black Current Consumption
> PS (forgot about this one) > > If i am powering the BBB through those pins and and i also plug in the usb to > connect to the PC is there a problem?, is the power switched to the USB or > does it remain on the pins like in the case where the USB and 5V Barrel are > both connected? Read the BBB SRM Section 6.1.4. Regards, John > > > > > 2014-07-06 18:06 GMT+02:00 Cristian Mitu <[email protected]>: >> Hello John, >> >> I have looked at the link you have sent and it is a good idea but i can just >> hook up a multimeter and see the current consumption that way since i don't >> have time to wait for the device to come. >> >> Anyway as a slightly different question: I have been looking into the >> datasheet of the BBB and it says i can power the board thorugh the expansion >> header but doesn't specify much else about that and the internet isn't too >> clear on some details. So what i want to know is the following: >> >> - Are the pins i am supposed to power the beaglebone through pin 5 and 6 on >> P9? ( i am asking this beacuse when i powered the board through the barrel >> connector those pins outputted 5V ). >> >> - Is there a limit to how much power can be drawn through those pins, or does >> it draw however much the BBB needs ( i am estimating that with wifi and >> everything else it can get up to 600-700mA). The reference manual states that >> those pins can dish out 1A for supplying any add-ons, is it the same for when >> you supply power to them. On the board i am making the 5V voltage regulator >> that supplies the BBB can handle 2A so i am covered on that end. >> >> >> 2014-07-05 21:49 GMT+02:00 John Syn <[email protected]>: >> >>> >>> From: Cristian Mitu <[email protected]> >>> Reply-To: "[email protected]" <[email protected]> >>> Date: Saturday, July 5, 2014 at 12:37 PM >>> To: "[email protected]" <[email protected]> >>> Subject: Re: [beagleboard] BeagleBone Black Current Consumption >>> >>>> Ok now i see it specifies above the cnditions in which the test was done >>>> with practically everything connected. The only thing i need to know now is >>>> by how much the currentconcumtion rises while using wifi. Probably a litle >>>> bit over 500mA. >>> http://www.hardkernel.com/main/products/prdt_info.php?g_code=G137361754360 >>> >>> If you don¹t have a way to measure the current consumption, this device >>> might be handy. >>>> >>>> >>>> >>>> 2014-07-05 20:29 GMT+02:00 Cristian Mitu <[email protected]>: >>>>> Oh yes i have seen that part, i wasn't sure beacuse it said TBD in the >>>>> table but now i see that that is only for the reset state only. And from >>>>> what i understand the USB's are limited to 500mA, and the kernel booting >>>>> peak is 460mA. But it doesn't specify for the other devices. >>>>> >>>>> >>>>> 2014-07-05 20:11 GMT+02:00 William Hermans <[email protected]>: >>>>> >>>>>> Cristian, >>>>>> >>>>>> There is a table of power consumption conditions in the TRM for the >>>>>> Beaglebone black. 460 ish mA when everything like USB / ethernet / hdmi >>>>>> etc is used( if memory serves ) But do double check, as my memory for >>>>>> such things isnt always perfect. >>>>>> >>>>>> >>>>>> On Sat, Jul 5, 2014 at 10:42 AM, Cristian Mitu <[email protected]> >>>>>> wrote: >>>>>>> Hello, >>>>>>> >>>>>>> I need to know how much current does the beaglebone black need in two >>>>>>> situations: >>>>>>> >>>>>>> - worst case scenario - where everything is used (except extension >>>>>>> headers) >>>>>>> - specific setup - where i use the usb for wifi , data cable plugged in >>>>>>> and debuger at once. >>>>>>> >>>>>>> The data sheet says 1A is sufficient for powering the board but if i >>>>>>> have power hungry devices like the wifi more may be needed. >>>>>>> >>>>>>> Regards, >>>>>>> Cristian >>>>>>> -- >>>>>>> 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 a topic in the >>>>>> Google Groups "BeagleBoard" group. >>>>>> To unsubscribe from this topic, visit >>>>>> https://groups.google.com/d/topic/beagleboard/A9I79N2WyqM/unsubscribe. >>>>>> To unsubscribe from this group and all its topics, 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. >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "BeagleBoard" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/beagleboard/A9I79N2WyqM/unsubscribe. >>> To unsubscribe from this group and all its topics, 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. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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