Welcome to XDA

Search to go directly to your device's forum

Register an account

Unlock full posting privileges

Ask a question

No registration required
Post Reply

Usb otg + charging pipo u6

OP geraldine

26th May 2014, 12:58 AM   |  #1  
OP Junior Member
Thanks Meter: 0
 
12 posts
Join Date:Joined: Jan 2006
hi,
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  
OP Junior Member
Thanks Meter: 0
 
12 posts
Join Date:Joined: Jan 2006
how to know, if the charging and otg can work at same time?
27th May 2014, 12:10 AM   |  #3  
OP Junior Member
Thanks Meter: 0
 
12 posts
Join Date:Joined: Jan 2006
i use kernel 3.0.36+
the otg+charging it is activated (coded) in this kernel?
thanks
28th May 2014, 12:53 AM   |  #4  
OP Junior Member
Thanks Meter: 0
 
12 posts
Join Date:Joined: Jan 2006
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 http://www.active-semi.com/sheets/ACT8846_Datasheet.pdf
im newbee, can i connect in battery pin directly a module like this: http://www.ebay.com/itm/LiPo-Charger...item4ac607684a ?
i read 8846QM are a logical power management. it is dangerous for my tablet to use this module?
thanks
Last edited by geraldine; 28th May 2014 at 01:04 AM.
30th May 2014, 02:05 AM   |  #5  
OP Junior Member
Thanks Meter: 0
 
12 posts
Join Date:Joined: Jan 2006
My projet to mount in audi A3
Last edited by geraldine; 31st May 2014 at 04:16 AM.
Post Reply Subscribe to Thread
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes