Develop Bugs

OTG USB HUB Charging

So i ordered USB HUB and OTG cable and made this: http://shrani.si/f/3m/Qg/JfkMcsx/20130808144649.jpg
Everything is working fine, just the battery life is short.
So i was wondering if I can connect USB HUB with A-A USB to USB Power Adapter (http://image.made-in-china.com/2f0j00CefTLRdzJBgP/5W-USB-Power-Adapter-MEU-.jpg) and charge my Nexus 7.
Greetings.

SuperAmi said:
So i ordered USB HUB and OTG cable and made this: http://shrani.si/f/3m/Qg/JfkMcsx/20130808144649.jpg
Everything is working fine, just the battery life is short.
So i was wondering if I can connect USB HUB with A-A USB to USB Power Adapter (http://image.made-in-china.com/2f0j00CefTLRdzJBgP/5W-USB-Power-Adapter-MEU-.jpg) and charge my Nexus 7.
Greetings.
Click to expand...
Click to collapse
You won't be able to charge the nexus that way - you'd need a custom kernel for that (there's one for original nexus 7).
I'm planning on doing something similar, I'm wonder if a powered USB hub would at least power your USB accessories (I'm going to plug in a DAC and Hard drive).

miketunes said:
You won't be able to charge the nexus that way - you'd need a custom kernel for that (there's one for original nexus 7).
I'm planning on doing something similar, I'm wonder if a powered USB hub would at least power your USB accessories (I'm going to plug in a DAC and Hard drive).
Click to expand...
Click to collapse
you think it will come?

SuperAmi said:
you think it will come?
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Click to collapse
Not for a few months at the very earliest would be my guess.

They make a otg cable that has a power port on it to power the flash drive so it don't drain your battery. I know amazon has them.
Sent from my Nexus 7 using Tapatalk 2

For those interested in making this possible, like it is with the OG nexus 7, Here it is:http://www.indiegogo.com/projects/usb-rom-nexus-7-2013
??
And thread:
http://rootzwiki.com/topic/37755-timurs-kernel-usb-rom-closed-21-aug-2013/
Sent from my Nexus 7 2013 using Tapatalk 4

Help with Otg

Hello i installed a nexus 7 in my car not i really dont want to take out my center console because its a huge Pita. But i realise that i now need an otg. I was runninh sound via bluetooth to my radio but the lag os crazy. I have acces to the the end of my charging cable. I was wondering would adding a usb to usb adapter and a usb hub. Would that be consider a usb otg cable. Would i be able to purchase a usb dac and use it. Also could i charge at the same time. I have absolutely no room to fit a audio jack on my tablet. So usb dac is my only option.

egren58 said:
Hello i installed a nexus 7 in my car not i really dont want to take out my center console because its a huge Pita. But i realise that i now need an otg. I was runninh sound via bluetooth to my radio but the lag os crazy. I have acces to the the end of my charging cable. I was wondering would adding a usb to usb adapter and a usb hub. Would that be consider a usb otg cable. Would i be able to purchase a usb dac and use it. Also could i charge at the same time. I have absolutely no room to fit a audio jack on my tablet. So usb dac is my only option.
Click to expand...
Click to collapse
You generally need a kernel installing to do as you have said eg elemental x or timurs. Yes, you can then use a usb otg cable to power and host the usb dac.

OTG USB for car audio + power

i need your opines about the best USB OTG cable to run with Timur's kernel
Also, i would prefer it be L shaped as it is for the nexus that is indash in my car....
TY in advanced-

http://www.amazon.com/Female-Micro-...70483&sr=8-1&keywords=90+degree+USB+OTG+Audio
or
http://www.amazon.com/Micro-Female-...sr=8-3-fkmr2&keywords=L+USB+OTG+Audio+nexus+7

bump

bump
Please guys, need your help. Trying to convert over to a USB OTG DAC type setup from the 3.5mm to rca setup i have currently

OTG Hub with Simultaneous Power to Nexus 7

Hello,
As explained in title, I am looking for a 3-4 usb hub that supports otg and can charge the Nexus 7 at the same time at full voltage, without drain.
Any ideas? thanks

Deeco7 said:
Hello,
As explained in title, I am looking for a 3-4 usb hub that supports otg and can charge the Nexus 7 at the same time at full voltage, without drain.
Any ideas? thanks
Click to expand...
Click to collapse
Yes http://www.ebay.com/itm/201372917160
but I'd prefer http://www.ebay.com/itm/191859127277

You will also need a kernel
What are you trying to accomplish

k23m said:
Yes http://www.ebay.com/itm/201372917160
but I'd prefer http://www.ebay.com/itm/191859127277
Click to expand...
Click to collapse
I have both, but it didn't output enough maH, wouldn't go above 300
deadgiveaway said:
You will also need a kernel
What are you trying to accomplish
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Click to collapse
Forgot to mention, I'm doing a car install. I'm currently using Elementalx Kernel with Otg charge enabled.

hi there, im crazy with this
i got a nexu 7 2013 wifi, as like you I use CM 13 with elementalx installed and otg and charge enable.
i use a Y cable, a hub cable too and any works.
if someone can explain or tell me why.....i need it for my car

rhipone said:
hi there, im crazy with this
i got a nexu 7 2013 wifi, as like you I use CM 13 with elementalx installed and otg and charge enable.
i use a Y cable, a hub cable too and any works.
if someone can explain or tell me why.....i need it for my car
Click to expand...
Click to collapse
Otg splitter and hub is so you can power your tablet and any devices that are connected to the hub .. Ex. Joycon , video grabber , dac ...ect
Timurs kernel is the most reliable but you have to donate to get it ... Elemental is free but sometimes has issues with otg/charge bugs upon wake

You need the ability to enable Fast Charging for the kernel.
Simple USB-OTG won't get you full charge speed.
I know Timur's kernel for 2012 model has a Fast Charge option that is probably also available on the 2013.
And ElementalX kernel *might* be getting that option soon too, if not already.

deadgiveaway said:
Otg splitter and hub is so you can power your tablet and any devices that are connected to the hub .. Ex. Joycon , video grabber , dac ...ect
Timurs kernel is the most reliable but you have to donate to get it ... Elemental is free but sometimes has issues with otg/charge bugs upon wake
Click to expand...
Click to collapse
i got a micro usb with female USB, i connect a male USB to USB male from the female of the micro usb to the hub, and the USB of the hub to de car charger, and tablet wont charge.
so...
nexus 7-micro usb male to usb female-usb male to usb male- hub-usb hub to power supply
in the hub i got one pendrive

rhipone said:
i got a micro usb with female USB, i connect a male USB to USB male from the female of the micro usb to the hub, and the USB of the hub to de car charger, and tablet wont charge.
so...
nexus 7-micro usb male to usb female-usb male to usb male- hub-usb hub to power supply
in the hub i got one pendrive
Click to expand...
Click to collapse
You need to install a kernel for otg and charging ....
Two options
Elemental kernel ....slightly buggy loses charge on boot
Timurs kernel ...works flawless ... But you have to donate ...

deadgiveaway said:
You need to install a kernel for otg and charging ....
Two options
Elemental kernel ....slightly buggy loses charge on boot
Timurs kernel ...works flawless ... But you have to donate ...
Click to expand...
Click to collapse
i got elemental X, with Y cable and wireless charge, doesnt work, if I plug something on USB port, the tablet stop charging, I use CM firmware so I suppouse to install elementalX CM kernel, right?

Not sure what roms are compatible with elemental x.... I use stock android with timurs ...xposed can do everything i need as far as custom ...

Swapped USB DAC, doesn't always work now

Hi all, nexus 7 2013 lte and WiFi model, 5.1.1 with timurs Kernal installed in my car.
I've got a board that has a 5v 3a power supply going to a otg y cable. Usb hub plugged into y cable and dac plugged into hub.
I've just swapped from a miniDSP MiniStreamer which is a usb to spdif coaxial sound card. This worked perfectly, I could unplug and replug the otg cable or turn power off whenever I wanted and it would always be recognized and be used by Android through Spotify, power amp etc.
I just changed my processor and it takes an optical spdif input so I changed the MiniStreamer to a hifimediy sabre u2 dac which also does optical spdif out.
I found to get the sabre u2 to work at all, I have to turn the tablet off, connect the dac and power to it, the turn the tablet on. This takes a while to do.
As soon as I either disconnect the otg cable or turn power to the dac off and back on or the tablet goes into its Fi sleep mode (when car is turned off) my tablet no longer uses it for audio but reverts back to tablet speakers.
In the power event manager it still shows the usb hub and the dac as being connected.
Would greatly appreciate any help, as it's my only source for audio in the car.
Apologies if it's in the wrong place, I've not spent much time on this forum so not sure where everything is.
Edit: do you think updating to Android 6.0 would solve this if it's just a finicky usb audio and Android 5 thing?
Sent from my D5833 using Tapatalk

So I'm not sure why but a program called SoundAbout fixed this. I forced all media audio out to usb host and it seems to have done the trick.
I shouldn't need this since 5.1.1 and timurs Kernal together are supposed to make usb dac's hot pluggable but oh well, it's working now.
Sent from my D5833 using Tapatalk

Hi Phahel, have you had any issues w/ static over any of your USB dac? I bought a couple of inexpensive units to try and both have static. I still have a bunch of things to try to isolate the issue (use dac on computer, use stock lineage kernel, try on another phone, etc), but I'm curious if there are any common issues that I'm just not aware of. I'm using Lineage 14.1 and ElementalX kernel (which enables OTG w/ charging). Thx!

Make sure you have quality charger and cable and that audio ground loop is not problem in your car (some Prius are known for this).
Also, I'm having problems with newer Android (7) and sound distortion. If you want to, try cm13, or stock Rom running on Android 6.

Phahel said:
Edit: do you think updating to Android 6.0 would solve this if it's just a finicky usb audio and Android 5 thing?
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Click to collapse
NO!
The DAC you have almot surely doesn't work with Android 6 and it's mono bug.
I find DACs can be touchy. sometimes mine wouldn't connect and I'd have to unplug, A couple times I had to reboot with the DAC connected. 98% of the time it works perfect.
Check all your wiring as already mentioned as you shouldn't need a software solution. Also check anything else USB you have connected. And when it doesn't work check PEM to see if it's recognized.