Power Pine64 via GPIO - Printable Version +- PINE64 (https://forum.pine64.org) +-- Forum: PINE A64(+) (https://forum.pine64.org/forumdisplay.php?fid=4) +--- Forum: Pine A64 Hardware, Accessories and POT (https://forum.pine64.org/forumdisplay.php?fid=32) +---- Forum: DC Power In (https://forum.pine64.org/forumdisplay.php?fid=35) +---- Thread: Power Pine64 via GPIO (/showthread.php?tid=206) Pages:
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RE: Power Pine64 via GPIO - HeadShot - 04-02-2016 Andrew2 - thank for that response. Can you tell me where the test points on the board are that shows the active voltage? Or should I just monitor it at the 5V out pin on the EULER bus? It would be nice to have a more detailed document on the board. Unless it's already on the wiki and I missed it. So, can anyone tell me the max Vin for this board? RE: Power Pine64 via GPIO - Andrew2 - 04-02-2016 (04-02-2016, 09:57 AM)HeadShot Wrote: So, can anyone tell me the max Vin for this board? The power requirements are clearly written: 5V/2A. If you want to destroy the board feel free to inject higher voltages (5.1V maybe even 5.2V are fine, especially when powering through Micro USB since voltage drops will occur anyway) Regarding test points please have a look at the schematic (no idea whether this has been released or not) RE: Power Pine64 via GPIO - TeaPack - 04-13-2016 (04-02-2016, 10:36 AM)Andrew2 Wrote:(04-02-2016, 09:57 AM)HeadShot Wrote: So, can anyone tell me the max Vin for this board? Well, PMIC on this board can work with max of 7V and unfortunately, microUSB is connected directly to Eulers pins, so there is danger of destroying other devices connected to microUSB port, when Pine is powered over pins... complete schematics: https://drive.google.com/file/d/0B0cEs0lxTtL3c3lfUHFIWmItV2M/view?usp=sharing PMIC datasheet: https://github.com/OLIMEX/OLINUXINO/blob/master/HARDWARE/A64-OLinuXino/PDF/AXP803_Datasheet_V1.0.pdf RE: Power Pine64 via GPIO - rahlquist - 04-13-2016 (04-13-2016, 03:36 AM)TeaPack Wrote:Keep in mind that schematic is not valid as it relates to power on the 2Gb model, there were changes and that revised schematic has not been posted.(04-02-2016, 10:36 AM)Andrew2 Wrote:(04-02-2016, 09:57 AM)HeadShot Wrote: So, can anyone tell me the max Vin for this board? Just because the PMIC has a tolerance of 7v doesnt mean they designed the board so that anything else sharing its Vcc rail can handle that. Why, I bet there are capacitors on the board rated for 16v..... Also according to that schematic D+ and D- on microusb are not connected, so, what would you hook to it other than power? RE: Power Pine64 via GPIO - TeaPack - 04-13-2016 (04-13-2016, 08:22 AM)rahlquist Wrote:(04-13-2016, 03:36 AM)TeaPack Wrote:Keep in mind that schematic is not valid as it relates to power on the 2Gb model, there were changes and that revised schematic has not been posted.(04-02-2016, 10:36 AM)Andrew2 Wrote:(04-02-2016, 09:57 AM)HeadShot Wrote: So, can anyone tell me the max Vin for this board? Personally nothing =) but if someone tests more options and forget to unplug the cable, something can get hurt... =) and I was checking schematics for 20 minutes to figure out if DCIN on Euler and USB lines are connected to anything else and I couldn't find anything. Hope new schematics will be released as soon as possible... RE: Power Pine64 via GPIO - xmasone - 05-06-2016 (04-02-2016, 12:18 AM)Andrew2 Wrote:(04-01-2016, 09:32 PM)Zoidiano0 Wrote: More like volts u need amps The Micro USB connector especially for the Pine64 makes no sense as a design choice. The MAX the adapter can supply is 1.8 yet the board requires 2.0. Not sure which school of design the designers went to but I was always taught if it requires 1 design for 1.3 to 1.5. There are so many wall pods that can provide good stable power with the regular round connector and center pin, this micro USB makes no sense. |