Hello, I installed an Asus zenpad c7 in my car two days ago, it's working good except that it plays through the AUX.
I would like to charge and output to a USB dac but my google fu is telling me it's not possible, only on timurs kernel nexus 7.
Any help is appreciated.
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I am trying to get my nexus 7 2013 setup to use as my new headunit that will interface with my car stereo.
So I am using ElementalX version 2.9
My setup is as follows
OTG Cable>Stock Nexus7 charging cord>Startech 4port USB hub>USB DAC Behringer UCA222 plugged into usb hub >Powering this usb hub for my test is usb cable to power source
Having it setup like this The usb is powered and my nexus 7 is also charging. BUT the USB Dac behringer uca222 does not power on.
If I unplug usb dac from usb hub, and plug the dac into the usb port on OTG cable then the usb dac will power on. Also the USB Hub still has power.
BUT now the nexus 7 will not charge.
WHen I test to see if I can play music from nexus 7 through usb dac to car radio nothing happens, only music is coming from nexus 7.
So am I missing something or doing something wrong?
Music apps I have tried. PowerAmp, N7Player.
Help would be greatly appreciated thank you.
https://timur.mobi/timurs-kernel-n7-2013/faq/
Stock Android 4.4.x does not provide native USB DAC hotplug support. Install timur-services-flo442-[date].zip via recovery to enable USB DAC hotplug and USB audio volume patches. This installer will modify the following files:
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though i'd be interested if you find another solution to using a DAC on the 2013
mackeystingray said:
https://timur.mobi/timurs-kernel-n7-2013/faq/
though i'd be interested if you find another solution to using a DAC on the 2013
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This. You need timurs, it works great!
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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.
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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.
Has anyone got both Wireless (Qi) Charging and OTG working at the same time with any combination of ROM/Kernal etc? I've tried all the settings on ElementalX but like others reported, it seems to be one or the other.
Thanks
Nathan
note: OTG + Power is fine, but I'd prefer to use my wireless dock with a DAC as I get ground loop feedback using the same power source
jmone said:
Has anyone got both Wireless (Qi) Charging and OTG working at the same time with any combination of ROM/Kernal etc? I've tried all the settings on ElementalX but like others reported, it seems to be one or the other.
Thanks
Nathan
note: OTG + Power is fine, but I'd prefer to use my wireless dock with a DAC as I get ground loop feedback using the same power source
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I haven't been able to... idk if it was from me transferring the daughterboard from an older one previously, but I tried!
Great question! I just ordered a DAC for my Nexus 7 (2013). I'm running Lollipop. I have my tablet installed in my car and have been using Bluetooth audio to my DSP, but am upgrading to a DAC for better sound quality via optical output.
While we continue searching for a wireless charging solution, which Lollipop kernels work for USB charging and DAC at the same time? Thanks!
I have not problem with using the ElementalX kernel and USB charging + DAC but... the killer I've found is is your amp is also on the same DC circuit you end up getting a ground loop distortion, which is why I was hopping for a Wireless Charging as it may help with isolation.
jmone said:
I have not problem with using the ElementalX kernel and USB charging + DAC but... the killer I've found is is your amp is also on the same DC circuit you end up getting a ground loop distortion, which is why I was hopping for a Wireless Charging as it may help with isolation.
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Hey bud, can you link me to the Elemental Kernel? How do you connect your cables to get DAC via OTG while also charging the tablet? Thanks so much for your help!
pieces of cake said:
Hey bud, can you link me to the Elemental Kernel? How do you connect your cables to get DAC via OTG while also charging the tablet? Thanks so much for your help!
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http://forum.xda-developers.com/showthread.php?t=2389022
Did you ever figure out if you can simultaneously wireless charger with OTG connected to DAC?
I really want to do this.
Tried Elementalx with CM 11 12 and 13, but none seem to do this?
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?
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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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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.
I am trying to use my OPPO HA-2 external DAC with the note 7 and am having issues. First I tried the usb-c adapters that came with the phone and could not get any sound out of the dac. Then I purchased a short Monoprice cable (micro-usb to usb-c) and it worked...sound from the dac. But then I noticed that the phone was charging the dac which I obviously don't want. Not matter what I select on the usb pull-down menu it always switches back to "Charging external device". There is a usb configuration option in the developer options menu that I changed to Audio source but when I plugged in my dac is immediately went back to "charging external device" and the developer options was changed back to charging. So any ideas? My previous phone was a Nexus 6P with usb-c and I had no issues. I e-mailed OPPO but they don't want to get into suggesting any specific cables or adapters. Any ideas?
Thanks,
John
demoleon said:
I am trying to use my OPPO HA-2 external DAC with the note 7 and am having issues. First I tried the usb-c adapters that came with the phone and could not get any sound out of the dac. Then I purchased a short Monoprice cable (micro-usb to usb-c) and it worked...sound from the dac. But then I noticed that the phone was charging the dac which I obviously don't want. Not matter what I select on the usb pull-down menu it always switches back to "Charging external device". There is a usb configuration option in the developer options menu that I changed to Audio source but when I plugged in my dac is immediately went back to "charging external device" and the developer options was changed back to charging. So any ideas? My previous phone was a Nexus 6P with usb-c and I had no issues. I e-mailed OPPO but they don't want to get into suggesting any specific cables or adapters. Any ideas?
Thanks,
John
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my experience with my (Dragonfly) DAC: i had to get USB Audio Player in the Play Store to get the DAC to work. :fingers-crossed: