Nexus 7 in car install help - Nexus 7 Q&A, Help & Troubleshooting

Have nearly completed my car install but came across a few hicups which i hope some can help me with.
First
I have purchased a fiio e17 for the digital to analogue converter but realised that once it goes flat it wont turn on without manual hands on with the power button, even with power fed to it. So i assume that i wont be able to use the e17 am i correct ?, are there no work arounds anyone can think of. Perhaps the headphone dock could power it on once power is detected ??.
Otherwise i will have to get the e10
Second
I have been trying to figure a way if possible to power a usb hub externally and have a usb otg cable Y cable connected to the nexus and only feeding power to the nexus and not the usb hub seen as its already powered. Now i have successfully wired the hub for its own power but find i cannot feed or redirect power to the nexus without using the timur kernel. Is it possible at all to have it feed power to the nexus only without the need of custom kernels ??.
Thanks.

Related

{Solved} DVD Rom coming/going?????

I recently got the HTC Shift and as we all know there is no build in DVD Super multi in it. I bought a Sony DVD Super multi from my friend and after connecting it to the USB port on the HTC. It detect the drive perfectly but whenever i try to run any CD or DVD the icon disappears from the My computer. I also tested connecting this Sony drive to my desktop and it is working fine there.??? any idea. i want to buy a new LD DVD Drive but not sure if it is going to work or not.
Solution: I purchased a new LG DVD Super multi that came with the external USB connector to give power to the DVD and as i tell i connected it to my desktop to give power through the USB to the DVD Super multi and finally it is working now and i am installing the WIN 7 now!!!!!!! HURRA PARTY TIME!!!!!!!!
Not enough power.
As far as I understand, there's not enough power going through the usb hub to power the dvd drive. You need an external power supply.
If you're using the hub/lan device that came with the shift, there's a mini usb jack in there which can take a 5v current. That means that you need to get a power adapter that has a usb mini output. I use my Touch HD charger to power the hub if there's anything that normally needs more power from the shift.
I hope that helps.
Caid.
444
Caid444 said:
As far as I understand, there's not enough power going through the usb hub to power the dvd drive. You need an external power supply.
If you're using the hub/lan device that came with the shift, there's a mini usb jack in there which can take a 5v current. That means that you need to get a power adapter that has a usb mini output. I use my Touch HD charger to power the hub if there's anything that normally needs more power from the shift.
I hope that helps.
Caid.
444
Click to expand...
Click to collapse
I faced the same problem when connecting two ext. HDD or flash USBs but I never thought of the mini USB powering idea...
Caid444 said:
As far as I understand, there's not enough power going through the usb hub to power the dvd drive. You need an external power supply.
If you're using the hub/lan device that came with the shift, there's a mini usb jack in there which can take a 5v current. That means that you need to get a power adapter that has a usb mini output. I use my Touch HD charger to power the hub if there's anything that normally needs more power from the shift.
I hope that helps.
Caid.
444
Click to expand...
Click to collapse
Ok, i got the cable that can give power from the USB port. I am planning to give the power to the DVD rom from my desktop.... is this may help?
Hi, I solved same Problem with external USB-HDD and external USB-DVD with an external USB Hub that has a Power Supply.
But so, there is not every time a external CDROM/USB-HDD or Power Supply on my travel sides, so I modify a USB-Stick with 4GB Space to boot and install Windows from them..
see the small and easy programm:
winsetupfromusb
http://www.msfn.org/board/install-USB-WinSetupF-t120444.html
if you have little time more, you can insert all needed drivers before you
make winsetupfromusb with Nlite...
see:
http://www.nliteos.com/

[Q] Using Powered USB Speakers with Nook

Hi Everyone,
I appreciate the great work developers have been putting in exploring the hidden capabilities of Nook.
I am struggling with USB host now. Here is my situation:
I have a pair of Logitech USB speakers (Please google, Logitech audio Hub, since I am not allowed yet to post direct links).
These use external power and were originally being used with my notebook connecting via USB.
Now, since I do not use my laptop any more and use only NOOK, I am interested in using them with Nook.
I am currently running Nook with CM-7.1.0-RC1-encore. Is it possible to use these speakers? I read a thread about USB host and some people have mentioned using USB audio but I am not sure if they are using powered ones and I am concerned whether connecting a powered speaker may fry the USB port.
Any thoughts, experience, ideas would be appreciated.
Update to a recent nightly. There have been so many updates for USB there is no point in trying to troubleshoot the RC.
Sure, I will update to that. Any other directions to get the USB speakers working?
I read your post and decided to try it. I do not have the speakers you mentioned but do have a set of insignia usb powered speakers.
I turned on host mode and connected the speakers to the nook. Tried 3 different games and had the same results. The speakers will power up and receive a signal from the nook. They work for about 20-25 seconds then lose the signal from the nook . I have to reset host mode to reenable them.
At this time, I would recommend using powered speakers through the headphone jack or a headset. Not sure what's going on through host mode but it had me worried when I had to reset host mode 3 times.
I'll run a logcat to see what's going on in the system but it looks like a no-go for the present. I get excellent results from powered speakers through the headphone jack. Just a thought and I'll get back to you with the results of the logcat.
Sent from my NookColor using Tapatalk
Thanks a lot Moshe5368 for your response. The problem I have is that these speakers do not have 3.5 MM input and USB connection is the only possibility.
Though they are really nice speakers, I guess if this doesn't work then its time to just order another pair of speakers.
I have just ordered the USB converter today (from Micro USB to USB-F) and have not tried it with the speakers I own yet. Will test that and revert back on what I find.
BTW, the speakers I have are powered with regular power (USB connection is just for Audio signal). Do you suggest I try them? Any chance they could fry the Nook's USB port?
It is a possibility that that type speaker would work. My logcat showed (if I read it right) that since the speakers were drawing their power from the usb port (even through the usb powered hub) I exceeded the power available through the micro USB port on the nook.
I was not sure what to expect but thought that might be the case. I have a set of powered speakers from jwin that plug into the headphone jack and perform perfectly.
Let me know what your results are.
Sent from my NookColor using Tapatalk
Sure. I will keep you posted as soon my adapter arives.

Please help asap nexus 7 car install otg timurs usb not seeing usb power

I installed it in my dash and removing it is a pita it was working perfectly fine but for some reason it wasnt showings charge or turning off or on with the car it just stays on i tried restart nothing happens i tried unplugging usb from powergen and plugging back in no result
Also if i go to usb rom under fixed installation i am able to check box and uncheck also did nothing
I am using nexus 7, timurs usb rom, otg cable, original charging cable and powergen usb charger
Please help thanks
Anyone???
I'm also using Timur's kernel with USB ROM for my car installation. I know that it can be very picky on the order the USB plugs are added (data and power). It may seem simple but remove the the OTG cable from the tablet and remove both the data and power legs from the OTG as well. The follow the order listed by Timur on his website:
To activate charging, you must first connect your external power supply to your OTG Y-adapter - then plug the OTG adapter into your Nexus 7 - and then connect any slave devices.
Click to expand...
Click to collapse
Hopefully that should get you back up and working. I completely understand how frustrating it is to have everything plugged in and see that tablet isn't charging, especially when its difficult to get to the Nexus itself.
does anyone have a easy charging solution these car chargers dont work
and a good otg y cable
You could try using a power inverter which will give you a standard US plug from the cigarette lighter. From here, you could plug in a regular outlet adapter. I found this to work pretty well with my own set up and managed to get one pretty cheap at Walmart. As for a good OTG y cable, your best bet is probably to go on Amazon and find one with a lot of good reviews. They can vary in quality and some of the cheap ones I've gotten from China have flaked out after a short time and little use.
Sent from my Nexus 7 using xda app-developers app
Not seeing usb power
I had the same issue. I was using a 90 degree adapter into an OTG cable and my n7 wouldn't go into fixed install mode. Turns out my adapter cable was stopping the n7 from recognizing power. I removed the 90 degree adapter and plugged straight to otg and it worked as advertised. The issue was found during my bench testing on a 12v powersupply. I still have to find a 90 degree otg cable that will work.
So... try a different cable or if you have an adapter between the otg y cable, that may be the issue.

G S4 with multimedia (HDMI + OTG) dock - not working after power off then power on

Hi All,
I have an issue with my Galaxy S4 (CM12.1) and the Leicke Clever Dock multimedia and otg dock I'm using. If I operate the dock by the instructions (plug in usb peripherals then plug in HDMI then plug in micro usb power before plugging the phone in) it works flawlessly. If I then power off the dock leaving the phone on (i use macrodroid to set it into a low power mode) and then power up again it starts charging but wont transfer the screen to hdmi unless I pull out the phone and plug it back in.
I assume that the issue is the trigger for MHL but I cant understand whether it is something in the phone that isnt putting the usb port into mhl mode or if its the dock not doing something.
A few options:
1 - Find a new dock that enables this (im struggling to work out whether any of them can, even the official samsung one)
2 - Get the phone to enable MHL when charging (i have searched high and low and cant find anything that might be able to help
3 - Get the phone to disable and then enable the usb port (dont know if this will even solve the problem)
4 - Other (suggestions appreciated)
Im also investigating screen casting and will see if there is a route there but I will also need the OTG capability.
Cheers
Findlay

USB OTG + Charging at the same time

Hi guys,
I intend to use an old s7 edge in car with a USB DAC (Mini USB DAC signstek audio -- PCM2704). I plug into the car.
Since this DAC requires a power source from the phone, it works and audio comes out, but now I have no way to charge the phone.
I am so confused with all these issues with cables and hubs. I saw Nexus 7 had a special timur usb host kernel rom or something...
What's the bottom line... how can I power the phone and the DAC at the same time and have the DAC plugged to the phone?
Are there roms I can use or special modifications whatever, what cable/hub? Please let me know.
I'm ready to root this phone and install a custom rom, but want to use it for this purpose
Instead just buy a cheap fast wireless charger.
a_ahmed said:
Hi guys,
I intend to use an old s7 edge in car with a USB DAC (Mini USB DAC signstek audio -- PCM2704). I plug into the car.
Since this DAC requires a power source from the phone, it works and audio comes out, but now I have no way to charge the phone.
I am so confused with all these issues with cables and hubs. I saw Nexus 7 had a special timur usb host kernel rom or something...
What's the bottom line... how can I power the phone and the DAC at the same time and have the DAC plugged to the phone?
Are there roms I can use or special modifications whatever, what cable/hub? Please let me know.
I'm ready to root this phone and install a custom rom, but want to use it for this purpose
Click to expand...
Click to collapse
It's either USB-OTG or charging, you can't have both as hardware limitation (and i don't think any phone has that capability), unless you wireless charge
then how do those guys with the nexus 7 charge and have a dac at the same time with a Y cable?
i have nexus 7 with Y cable, but it works on some rons with enabled charging. thats why usb cable had many pins

Categories

Resources