Dock hack - Nexus 7 Q&A, Help & Troubleshooting

Anyone know how to splice a micro usb cable and attach it to the dock do I can charge my tablet? Charging via micro usb port isn't working and up need a way to charge the device
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USB charger

Is there a charger that can plug into a USB port. I have universal laptop battery that has two USB charging Ports that I use to charge my phone and would like to use to charge my Iconia. Is there one out there?
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JamesR913 said:
Is there a charger that can plug into a USB port. I have universal laptop battery that has two USB charging Ports that I use to charge my phone and would like to use to charge my Iconia. Is there one out there?
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No
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Can you splice a USB cable and a charger together?
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It doesn't matter what you slice together as it will not take a charge via the usb port. So unless you got some magic spells and chants and perhaps some pixie dust. Then it isn't going to happen.
JamesR913 said:
Is there a charger that can plug into a USB port. I have universal laptop battery that has two USB charging Ports that I use to charge my phone and would like to use to charge my Iconia. Is there one out there?
Sent from my HTC Inspire 4G using XDA App
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The reason why it's no is:
Any devices USB port only puts out 5 volts.
The A500 charging port requires 12 volts.
The A500 USB port doesn't charge the battery.

[Q] car install no ac charging with otg

hello guys well i have a nexus 7 that i set up in my car everything working perfect but i cant get the battery to "ac charge" im using this cable
http://www.ebay.com/itm/Usb-type-A-...G-Micro-USB-female-power-supply-/310680595889
the issue is not in the charger because the charger im using when connect to the tablet directly does achieve ac charging but when i plug in the above splitter it looses it, if the cable is meant to separate data from power than why is this happening? how can i get "ac power" or fast charging, I currently have everything connect to a toggle switch that i leave on over night, and i really is not a big deal but i noticed the other day with the navigation on watching videos that the battery is still draining.. using timur kernel
thanks in advance
its obviously the splitter, from the looks of the cable on the micro usb socket its to thin to take the power?
You need to state more info. What kernel? Rom? Only a specialized kernel will allow otg host mode charging.
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If you are completely stock, the tablet will not charge while it is in Host Mode with the OTG cable attached. It can be done with a special kernel, though.
Yup, thats what I said.
I can almost guarantee it is your otg cable,get a samsung compatible otg with power cable.
http://www.ebay.com/itm/Micro-USB-Host-OTG-Cable-W-Micro-USB-power-for-Samsung-N5100-i9300-i9500-N7100-/130917631296?pt=US_Cell_Phone_PDA_Cables_Adapters&hash=item1e7b4c8540
I have a car install running Timurs usbrom (which I recommend over just his kernel) and its the one Im using without issue.
It is because the otg cable does not have the data cables in the powered end that is split off. They need to be shorted to get full AC charging but it is impossible with an Otg cable as it would not work for any data.
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Kodiack99 said:
I can almost guarantee it is your otg cable,get a samsung compatible otg with power cable.
http://www.ebay.com/itm/Micro-USB-Host-OTG-Cable-W-Micro-USB-power-for-Samsung-N5100-i9300-i9500-N7100-/130917631296?pt=US_Cell_Phone_PDA_Cables_Adapters&hash=item1e7b4c8540
I have a car install running Timurs usbrom (which I recommend over just his kernel) and its the one Im using without issue.
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I also have the timurs kernel but i dont see the difference between your cable and mine......
graydiggy said:
It is because the otg cable does not have the data cables in the powered end that is split off. They need to be shorted to get full AC charging but it is impossible with an Otg cable as it would not work for any data.
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So what you are saying if im understanding correctly is to achieve true ac charging you have to utilize all 4 cables in the usb passage?
davidadavila said:
So what you are saying if im understanding correctly is to achieve true ac charging you have to utilize all 4 cables in the usb passage?
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You need to short both the data pins together for AC charging. But if you do that, OTG is gone.
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davidadavila said:
I also have the timurs kernel but i dont see the difference between your cable and mine......
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You are just using the kernel,usbrom is his full cm10.1 based custom rom. The proper otg cables need to have pins 4 and 5 (ground) together on the tablet micro usb end to activate the ofg and power,that why you need the special cable.Your cable only power the device on the usb end not the tablet,it says no device charging in the description.
Also with Timurs kernel or rom the data wire cross isnt needed,or the otg devices wouldnt work.
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Simultaneous charging with Pogo and Micro USB?

Can I plug in the Pogo charger and the Micro USB at the same time, and have a faster charge? I've tried it but I don't really know what to compare it to since I'm new to the Nexus and don't know really how long a full charge takes lol
It would be super sick if somehow this could slice the charge time in half.
Sent from my Nexus 10 using XDA Premium 4 mobile app
swagginandbaggin said:
Can I plug in the Pogo charger and the Micro USB at the same time, and have a faster charge? I've tried it but I don't really know what to compare it to since I'm new to the Nexus and don't know really how long a full charge takes lol
It would be super sick if somehow this could slice the charge time in half.
Sent from my Nexus 10 using XDA Premium 4 mobile app
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No. The charging icon will display but the N10 is not charging. That feature would need to be included in a ROM but neither stock nor any custom ROM has the capability. This limitation extends to using an OTG cable and pogo plug.
3DSammy said:
No. The charging icon will display but the N10 is not charging. That feature would need to be included in a ROM but neither stock nor any custom ROM has the capability. This limitation extends to using an OTG cable and pogo plug.
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Thanks man. But I have a portable micro USB charger, if I connected that via an OTG cable, and pogo charged it as well, would that work?
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swagginandbaggin said:
Thanks man. But I have a portable micro USB charger, if I connected that via an OTG cable, and pogo charged it as well, would that work?
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No, there simply is no ROM that supports concurrent charging. In fact both stock and custom ROM's block pogo changing when the Micro USB port is used.

What's the difference with the extra plug in the new USB cable included with Note 3?

What does the extra plug do?
Just faster transfer speed or faster charge using USB 3.0?
I tested it with a standard USB 2.0 microUSB cable and it still works and charge the Notes 3
It dedicated in/out. Much faster charging and data bandwith
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From what I've heard and read USB 3.0 doesn't charge faster. But it transfers days about twice as fast as USB 2. But don't quote me on that. ..
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True, doesn't charge faster from the wall, but will when plugged into a USB 3.0 port on a computer when compared to USB 2.0 port.
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itsjusttim said:
True, doesn't charge faster from the wall, but will when plugged into a USB 3.0 port on a computer when compared to USB 2.0 port.
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I tested this, and it seems to charge at the same rate in a USB 3.0 port, plus it stopped charging after a few minutes. The port is a PCI Express card from Rocketfish.
Now I'm starting to doubt the accuracy of the app or my understanding of what it does.
It's Galaxy Charging Current Lite. If I launch it while my battery is charged to about 80% it says 460. If I come back & refresh the view when it is charged to 97-98% it says 1800. Why would the rate start slow then speed up as the battery fills, shouldn't it be the other way around?
A few weeks ago I used another app to check charging rates of my Nexus 4 with different cables & chargers, and this app seems to be very different. I guess I need to try to figure out which battery checking app it was.
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AllGamer said:
What does the extra plug do?
Just faster transfer speed or faster charge using USB 3.0?
I tested it with a standard USB 2.0 microUSB cable and it still works and charge the Notes 3
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The charge/data cable, is just a standard USB 3.0 cable, just like any USB 3.0 external harddrive cable. I am actually using a black WD USB 3.0 Cable instead of the ugly white cable supplied.
All the cable does, if you have USB 3.0 on your PC/Laptop is allow for much fast data transfer (great when transferring music or video to and from your phone via usb. Note that you need to select USB 3.0 mode on the phone.

DIYS desktop dock. Some questions.

Hey folks.
I've been thinking about this for a while and I wonder if it is technically possible.
Basically I want to build my own desk dock. It should have HDMI output, charging and USB otg for connecting peripherals.
I'm not sure if it's possible this way, though.
I was thinking of using an otg y cable (with female usb and female microusb) as a base. The regular female USB would be hooked to an externally powered USB hub (just for the sake of having more than 1 USB port available). The female micro USB would be connected to a slimport HDMI adapter (to allow using it with a monitor or TV.
If anyone knows about the technical possibilities please let me know. Maybe someone has tried something like this before?
Thanks in advance
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If I'm not wrong - n4 can't do usb otg and slim port hdmi at the same time.
What a pity!
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