Do you use pins 5&6 (VDD_CAPE_5V) to power the board? On Thursday, July 2, 2020 at 7:51:08 PM UTC+2, [email protected] wrote: > > When i removed D81 power was present on VDD_5V but only at about 4.5V > which is I guess the voltage drop across D82. > > there was no voltage on VDD_3V3 and the device would not startup - even > after pressing the power on button. > > Has anyone solved this? > > On Wednesday, 1 July 2020 21:58:00 UTC+1, Adrian Hatton wrote: >> >> I have found D81 from the silk screen data. Will be removing and trying >> as a next step. >> >> [image: ASSET_BOT.PNG] >> >> >> On Wednesday, 1 July 2020 21:42:12 UTC+1, Adrian Hatton wrote: >>> >>> Hi Geza, >>> >>> I was wondering if you made any progress here? >>> >>> I took a look at the schematics myself and I agree that by removing D81 >>> you essentially disconnect VDD_TYPE C from VDD_5V. >>> >>> If you then apply 5v power to VDD_CAPE_5V it connects to VDD_5V through >>> D82 and should power the device. >>> >>> I assume you would then boot the device by connecting PWR_BUT or P9.9 to >>> GND. >>> >>> Have you tried this? Have you been able to locate D81 on the board? I >>> have downloaded the board.pdf but it is extremely difficult to find >>> specific components. >>> >>> Many thanks. >>> >>> >>> On Saturday, 6 June 2020 09:41:45 UTC+1, Geza Kuhmann wrote: >>>> >>>> Hi All, >>>> >>>> I'd like to make my BBAI so it could only be powered from the J9.5/6 >>>> pins, but *not* from the USB-C connector. >>>> On the other hand, the USB-C connector should stay functional as pure >>>> USB connection (using the BBAI as a USB gadget). >>>> >>>> Reading the schematic it seems to me that removing diode D81 would >>>> exactly do this, but not being a hardware expert, I would be glad if >>>> somebody could confirm this. >>>> >>>> Thanks, >>>> >>>> Geza >>>> >>>
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