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Usb otg + charging pipo u6

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Thanks Meter: 2
By geraldine, Junior Member on 26th May 2014, 12:58 AM
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i have a pipo U6 and i use custom Riley rom 1.2.
I have a project to use it in a Dashboard car (with pipo U6 is the same dimensions of my contour Dashboard).
I want to charge and use OTG at same time, i try differents diagrams.
i use a Y cable short pin 4 and 5 with resistor.
i use a variable resistor to find the exactly value.
the value i had find is 6.20kohms, the icon charging is ON, the OTG work fine,
but really it don't charge.
i open the tablet to extend button with wire (to use a steeringwheell). and i saw that the charging light doesn't work.
im not affraid to solder in motherboard.
I want to directly solder +5v and GND directly on pins of controller charging chip. but i dont have pipo diagram.
its possible? if not, i have another solution is to remove battery and use a converter ----> this is my last solution.
any issues?
thanks sorry for my English.
26th May 2014, 07:52 PM |#2  
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how to know, if the charging and otg can work at same time?
27th May 2014, 12:10 AM |#3  
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i use kernel 3.0.36+
the otg+charging it is activated (coded) in this kernel?
28th May 2014, 12:53 AM |#4  
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i tested range 0 to 640kohm to find the exact value.
No issues to find resistor to activate otg+charging, i think is not supported

i find datasheet of power management chip of my tablet,
is a ACTIVE 8846QM link is
im newbee, can i connect in battery pin directly a module like this: ?
i read 8846QM are a logical power management. it is dangerous for my tablet to use this module?
30th May 2014, 02:05 AM |#5  
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My projet to mount in audi A3
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