yashsingh1/xdaforums huggingface dataset:
[Nexus 7 (2013) Q&A] JohnnyTightlips:
I do not shut off my car as I do not live in a big city with traffic jams or any of that. I am not worried about voltage/current as I am sure I can figure that out or modify a current 12v to usb charger. Temperature I am also not worried about as I can add heatsinks to everything and fans if needed. I am a little worried about the battery sitting in the car in the heat and that is why I am asking these questions.
[Nexus 7 (2013) Q&A] aritro88:
either u (and the people you know) r very rich, or u hav got a SUPER eco friendly fuel saving car that i dont know about. everyone turns off their ignition when they are stuck at jams n lights.

my guess, u own a normal run off the mill car. so switch off ur engine when required, it'll save u abt 800-1000$ worth of fuel in a year

not to mention the laborious process of rewiring ur car's electrical systems, dashboard trims etc...........

my process will cost a maximum of abt 10-15$, and at max 2mins of install time. (use a "line-in" cable to route ur tab's audio via the cars existing stereo system)

try it with ur cell phone. connect and charger and pull out the battery, see what happens....
[Nexus 7 (2013) Q&A] sbaeder:
??? Heat on the battery will do what ??? I have had a GPS on the dash of my car solid, parked outdoors, for 2 years. Still works fine when plugged in to the 12v adapter, and even holds a charge. Heat may shorten "life" of battery, but if it is also connected to a power cource of the car, should be FINE.:good:
[Nexus 7 (2013) Q&A] JohnnyTightlips:
Well from the looks of it no one has a real answer so I am just going to mess around with one when I get it and see what works best for me. I do not mind rewiring the entire car as I planned to do that with new speakers and an amp etc. I have done many car audio installs and I actually enjoy doing it. I think what I will probably end up doing is keeping the battery in it and if it does go bad I can just replace it. The way I see it is it is a pretty cheap tablet to mess around with compared to the thousand plus I would spend on a double din to do the same thing. Plus if I don't like how it works on my test bench then I will just use it as a tablet and not put it in the car. Thanks for the help. Also I don't know a single person who shuts their cars off at stop lights. I am sure it is great on the car to start and stop the motor every 2 minutes. You do realize you use very little gas when at idle. Anyways, thanks for the ideas.
[Nexus 7 (2013) Q&A] JohnnyTightlips:
Is this a serious post? Obviously if I am looking to hack a 200$ tablet I am not worried about cost too much. Also your idea is easy but I want it to be integrated and clean. I want it to look nice and not just have wires and mount sitting there.
[Nexus 7 (2013) Q&A] e30andrew:
Is this real life? are you serious right now? You have got to either be trolling, or just a complete idiot.

You should have to pass at least a 4rd grade grammar test to post on this forum, because posts like these are just embarrassing to the forum.
[Nexus 7 (2013) Q&A] StopHammertime:
2001 Corvette, I'm not rich, I'm a DIY'er. Isn't that what this forum is for? People that like to do projects and things themselves? Are you not from the US? Literally, no one does that but you. It doesn't take much fuel for a vehicle to sit at idle. In fact, it generally consumes MORE fuel to start a vehicle rather than let it idle for a few minutes rather than turn it off, wait a minute, turn it on, drive a bit, repeat, etc. Care to argue with me about this? I'm an ASE certified technician and will teach you a thing or two.

Rewiring my car? Haha. No. There's no rewiring involved other than adding an adapter. I think even a 4 year old could handle that task. Dashboard trims should not need modification on most newer vehicles, as most newer vehicles come with a double din or larger console that will either allow for direct fitment, or fitment with a simple install kit. My car requires modification, but it's easy work. It's not for the average Joe when it comes to modifying plastics, no, but you can hire people to do that. Also, again, this is a PROJECT. If you don't like it, shut up about it and don't post. The OP wants to do this, let him do it. Congrats on your cool 2 minute idea, but guess what, it's going to look stupid compared to an in-dash installation. Don't believe me?

versus

---------- Post added at 10:31 AM ---------- Previous post was at 10:25 AM ----------

:good:

lol'd @ 4rd grade
[Nexus 7 (2013) Q&A] JohnnyTightlips:
Awesome post.. I see you went the whole nexus dash route, did you end up going with a permanent solution or is the tablet just hiding in there? I wanted to do this for my wife and make it as friendly as possible. I was looking at using the ElementalX kernel so that I could add usb storage while charging, is that what you did? I would also be using co-pilot for gps since I can just download the maps. Did you add a usb-dac to yours? I figured if I am going to spend some money on nice speakers and an amp or two I might as well get the best audio quality. My biggest concern is that this project will be wife proof and it will work well for her on a daily use. I would love to get her steering controls working too but that may be a stretch. I actually love to tinker with this stuff so if it takes a couple weeks to get it working with ignition on off etc and music, gps, etc etc I am totally cool with that. I have done 4 carputer intalls before this but this will be my first tablet job. I figure if it goes well and I really like it then I will do the same to my car.
[Nexus 7 (2013) Q&A] StopHammertime:
Actually, that's the build I'm basing mine off of. Mine is going to be very similar, though I did have to do a bit of dash modification to make it fit (I should be done this week and will be posting pics/build thread). The one in the photo is "permanent" (though he simply hot glued brackets to it and it could easily be removed), and mine will be permanent. For $200, I have no issue keeping the thing installed permanently. My current 2013 has CM11 on it, but I haven't tested it with USB OTG (waiting on another cable to arrive), though if it doesn't work, I'll just use the ElementalX kernel with a stock ROM, since I'm sure that will work. Timur is working on a 2013 ROM as well. However, that's exactly what the plan is. 1TB external HDD with the accessory wire switching on a relay to engage the charging/screen on profile for the tablet, then upon key off, kill relay, and switching profile to off profile. I'm using a ByByte QUAD 7850 mini-amp to power everything. (LINK)

Regarding steering wheel controls, though I hear it's possible, I'm told it is a MAJOR project. I'm not going to bother with that, myself.
[Nexus 7 (2013) Q&A] JohnnyTightlips:
Sounds awesome, I will be excited to read your write up. I am curious to know how good that little amp will be. I was thinking of doing a 5 channel amp but I really didn't want to tear up the interior to run all the wires. Will you be using stock speakers? Are you using the 3.5mm jack or going to move toward a usb-dac? I will probably just go with a 64gb usb pen drive since my wife will only be doing music and very few movies if ever. I will also be adding fm to mine. Seems like all of this can be easily tested before it is in a car so I might have to take the plunge and start tinkering. Hook me up with a link when you get your write up going. Thanks
[Nexus 7 (2013) Q&A] StopHammertime:
The guy who's build I'm replicating used the mini amp, said it was just fine. It's basically the same as the built-in amps on a regular head unit. I may switch to aftermarket speakers/amp/sub in the future, though, so stock speakers for now. Since it has a factory Bose setup, I had to buy a PAC ROEM-VET1 adapter to lower the frequency, which allows me to use the factory speakers.

Yup, definitely can mostly be bench tested first. I haven't done much research on FM. Have you? Any thoughts on how to accomplish that? I really don't care if I never have FM in my car again, but I'm curious to know how people are accomplishing that.

Will do on the link. :good:
[Nexus 7 (2013) Q&A] JohnnyTightlips:
I looked into it and people have used something like this DVB-T Realtek RTL2832U Elonics R820T 50MHz-2200MHz HD TV DAB SDR RTL-SDR Project and used it for radio with SDR TOUCH I ordered one already and will see how well it works on a PC before I get the tablet. You would need to get a usb hub working in order to plug it in and your hdd. I learned a lot from Nexus 7 clean car install with backup cam. He is using the older nexus but I am sure a lot of the same stuff applies as long as you have a kernel that supports it which there is now. My wife could not live without NPR so she has to have radio. It is also nice to have radio and not need data, then you know if there are any weather events or crazy things going on.
[Nexus 7 (2013) Q&A] naturecannon:
Search YouTube. Some really cool in dash tablet setups out there. They even have modules avail now where you can use your steering wheel controls with the tablet. For a 200$ tablet, N7 not a bad deal for an in dash car setup. There is a great market out there for supplies and Installers on this exact topic!! Some make them removable, some pop into sight when you turn the key.!! I would love to have the time to take on an in dash Android setup, fun project to say the least.

I suppose it would only be a stupid idea for the non Android lovers and boring dudes lacking the love for technology. :) Negative kids these day :rolleyes:
[Nexus 7 (2013) Q&A] Muikkuman:
He is trolling.
[Nexus 7 (2013) Q&A] gregersrygg:
Yes, it's possible, but has some side-effects

Edit: Sorry, didn't see this whole forum section is about the 2013 Nexus 7. But it still might be relevant if anyone dares to do the same hack on a new Nexus 7...

To answer the original question: Yes, it's possible to power the Nexus 7 (old) without battery, but it involves sending power directly to the battery connection inside the Nexus 7, and it seems to have some side-effects.

The battery is a one-cell lithium polymer, which has a max charge of 4.23 V. I hoped the Nexus wouldn't fry when connecting 5 V, and it has worked fine the few minutes I've tested it. No smell of burnt electronics :)

Here is what I did:

Tear off the tape around the battery cable. You'll see it's soldered to a pcb-board, and the two black and two red wires are soldered together. The two wires in the middle is probably some kind of data-connection to the battery. Will investigate this further later.

Then I soldered loose the cables, so I could use the battery-connector, and soldered both red and black wires to red and black wires in a USB-cable. Drilled a hole in the back-cover right below the NFC-antenna. The back-cover is filled with all sorts of antennas, so scratch carefully with a knife before drilling. Attached some pictures of the process.

Side-effects I've noticed so far:

- It thinks the battery is at 0% and not charging.

- The clock is reset when you turn off the power. But if you have internet it will update from NTP within a minute or so.

- My computer (OS X) can't detect it anymore. So I suspect it doesn't work in USB device-mode anymore, but I'm able to connect a USB-keyboard with an OTG-cable, so it seems to work in host-mode.

Does anyone else have any experience with this, or any ideas why it doesn't work in device-mode? I'm considering adding a small connector so I can use the two extra wires from the battery to the data-wires of the USB-cable (and disconnect when not in use), and then solder a USB female cable to the original battery. That way I can (hopefully) connect the Nexus 7 to my computer when needed, and possibly analyze what the two extra wires is actually used for.

I have CM for Android 4.2, and Timur's USB-rom, but it's probably not needed for this hack, and I will probably install a stock rom if I get this working properly.

Be careful, and don't blame me if you fry your Nexus (or anything else). Be sure to turn off any fast-charge hacks when the battery is disconnected.
[Nexus 7 (2013) Q&A] utahbcn:
You've done some more testing?

I am also trying to connect directly to the car my nexus.

Thanks for the reply
[Nexus 7 (2013) Q&A] gregersrygg:
Yes, but I moved the discussion to the (old) Nexus 7 forum when I discovered this is the forum for the 2013 Nexus 7. See this thread for updates: http://xdaforums.com/showthread.php?t=2311799

From pictures it looks like the 2013 version also has a LiPo battery with about the same specs and wires, but I'm not sure.
[Nexus 7 (2013) Q&A] Rutjes:
I'm preparing a permanent install of a Nexus 7 (2012 but maybe 2013) in my '04 VW Polo without the battery in it. I'm worried about fluctuating temperatures and the heat inside the dash when the heater is on as the vents run through it.

After a couple of Google searches I came across this thread and was wondering if you have you discovered any more drawbacks to directly powering the tablet? If it's still running fine at 5v that is...
[Nexus 7 (2013) Q&A] Arthedes:
Check out this video for some ideas: https://www.youtube.com/watch?v=pTgH5zk6hNs&feature=youtube_gdata_player

The dude uses the inductive coil in the nexus 7 to charge it wirelessly and holds the tablet in place with neodinium magnets. Pretty cool setup!

Also check out this setup: https://www.youtube.com/watch?v=kSXZVNCbbYg&feature=youtube_gdata_player
[Nexus 7 (2013) Q&A] gregersrygg:
Same here. I've also experienced almost bricking the device when the battery went flat. Went through hell to make it charge the battery. Batteries don't work very well in cold temperatures, and up in the Norwegian mountains it often goes below -25° C (-13° F).

In case you missed it before. I posted in the wrong forum, so I haven't tested on the 2013 version of Nexus 7, but the first gen. Also I haven't had much time to test this, and only powered it by 5V for a few hours at the time. See the (old) Nexus 7 thread for how I got it connected to my computer again: http://xdaforums.com/showthread.php?t=2311799
[Vibrant Q&A, Help & Troubleshooting] lauri_ylonen:
hi

i have t959 samsung and i do not konw how install slim rom

download ver Slim-vibrantmtd-4.3.build.2.2-OFFICIAL-1788 and rename to update.zip and reboot to recovery

but when install rom write error

e:error in /sdcard/update.zip

(status 0)

please help me

thanks
[Vibrant Q&A, Help & Troubleshooting] lauri_ylonen:
need kernel root for t959

thanks
[Vibrant Q&A, Help & Troubleshooting] wkenworthy10:
I have an overstock kernal that you can flash as a .pda through odin if you are on stock that will install CWM and you could see if that works
[Vibrant Q&A, Help & Troubleshooting] wkenworthy10:
Here it is
[Vibrant Q&A, Help & Troubleshooting] martinez5241:
This method has worked for me numerous of times after coming back from another ROM, or when I just miss using Slimbean....

IF your in stock, and want a clean memory on phone You may use this code to reformat the SDCard *2767*3855# (type on dialer) will delete everything)

phone memory=internal memory

put update.zip http://sourceforge.net/projects/stockodinjfd/files/update.zip/download

on your phone memory.

Download slimbean vibrant 4.2.2 ROM ONLY and put it on your phone memory ***no need to download gapps for 4.2.2 if your not going to use the rom***

put slimbean 4.3.1. official 2.2. on phone memory

put gapps 4.3 also in phone memory if your going to be using gapps...

alright,

1.

Unplug the USB (assuming you are still connected after using ODIN)...

Hold down volume up + volume down + Power for about 9 seconds.

If you prefer, you can power off your phone, then hold in all 3 buttons to boot into recovery, I don't see the point in waiting for the phone to power off.

This will get you to a recovery menu (blue/purple text) after some yellow text.

2.

In this (the stock recovery menu) select 'Reinstall Packages'

Use volume to navigate + power to select.

3.

It will cycle a bit, you will see that yellow text again, then it will return to the stock recovery. Select Reinstall packages again.

You are now in CWR (clockwork recovery).

4. install 4.2.2

during this installation your boot will random boot. If stuck on vibrant logo, remove battery and go to recovery mode. This means Semaphone kernel was installed. semaphore recovery should come up

5. factory wipe/ system clear/ etc, ***wipe how you would wipe everything to go get a clean flash***

6. install slimbean 4.3.1

*Optional, then install gapps 4.3 ***if you dont install gapps you wont have google playstore unless you use apk***

7. wipe cache & dalvik cache

reboot

load time 3-6 mins, let it breath....

Hit thanks if it worked for you
[Vibrant Q&A, Help & Troubleshooting] lauri_ylonen:
thanks all sloved problem
[Xoom Q&A, Help & Troubleshooting] DiGi760:
So I'm trying to fix a Xoom for a client. Her nephew was using it over Thanksgiving weekend and has managed to mess it up.

1) On a normal boot it never gets past the boot animation. The animation just loops and loops.

2) I was able to get into recovery and do a factory reset, but that didn't improve anything.

3) I can get to "Starting Fastboot protocol support" or "Starting RSD protocol support 0"

4) I have used two different moto drivers on Win 7 and Win 8, but neither computer ever recognizes the xoom is connected regardless of mode

5) Adb never sees the xoom either.

6) This device should have been completely stock, but no one knows what this kid did with this tablet.

7) USB debugging was probably off since the owner would not have known about it or had a reason to turn it on.

What are my options here? I'm thinking that I need to flash a good factory image, but I need to get some communication going first.

Update: I've been trying different cables. I found one where the computers will see that a devices is connected, but am getting "USB device not recognized" with either set of drivers that I have on both computers. Making progress, but could still use some help.
[Xoom Q&A, Help & Troubleshooting] tidy01:
I had a problem similar to that about a year ago, somewhere in these forums was the suggestion to remove the SD card and then do a factory reset, it worked for me. My xoom just stopped working, I thought at first it was a flat battery but after charging the symptoms were the same as yours, might be worth searching through the forums if you haven't already
[Xoom Q&A, Help & Troubleshooting] DiGi760:
There's no sd card in it, just the little plastic place holder. I've been looking all over the forums, but I normally deal with Samsungs. I've been figuring out Motorola's little quirks as I go along. Is there a recommended moto driver for these things?
[Xoom Q&A, Help & Troubleshooting] tidy01:
Sorry can't help , mine is just over 2 years old and except for that one problem have never had any issues so have never needed to even connect it to a PC
[Xoom Q&A, Help & Troubleshooting] krs360:
I recently discovered these handy files when I needed to return to stock:

4G Xoom (MZ600) Restore

3G Xoom (MZ601/3) Restore

WiFi Xoom (MZ604) Restore

If you need to find out which Xoom model it is, power on whilst holding the volume down button, this will take you in to fastboot. Then (you sound like you'd know how do this, PM me if you don't) use "fastboot getvar all". This will return the model.

Unzip the file above, there's a batch file in there which will install the drivers, then fastboot the firmware over.

If you boot to fastboot, then run the batch file, it installs the drivers, then "adb device", then it asks if your device is connected - it won't show up cos it's in fastboot. Just ignore that and say yes, and it'll start flashing the files.

Sorry if I'm too late - don't visit these boards much these days. Good luck, let me know if this works.
[Xoom Q&A, Help & Troubleshooting] DiGi760:
Thanks for giving me something to try. I uninstalled the moto drivers I had and installed the ones included in the zip file and restarted my computers. The Windows 8 computer never recognizes that the xoom is connected in any mode. The 7 machine does see it in fastboot mode but as a "fastboot" device for which it fails to find drivers. When I run fastboot getvar all, all I get is <waiting for device>.

I do know that this is a wifi only (mz604) xoom. Thanks for the image files. If I can get this stupid thing to communicate with a computer, I think I'll be in business.
[Xoom Q&A, Help & Troubleshooting] Quantumstate:
In fastboot mode (vol -) it won't acknowledge that it's connected. Just fastboot your image over and it will work.
[Xoom Q&A, Help & Troubleshooting] DiGi760:
If I try to do anything with fastboot, it just says "< waiting for device >". Fastboot doesn't see a device to flash to.
[Xoom Q&A, Help & Troubleshooting] Quantumstate:
OK, it's either your cable or your driver. Many cables are for charging only, and have no data lines. I throw those away.

As to drivers, I'm Debian for 15 years so can't advise on Winduhs.

Oh, one more thing: I've noticed that on my old HP laptop I had to use a certain USB port, or else it wouldn't comm with my phone for fundamental actions like loading new firmware.
[Xoom Q&A, Help & Troubleshooting] krs360:
These were the drivers I used: https://motorola-global-portal.cust...sion/L3RpbWUvMTM4NjM1MjA0NC9zaWQvWEo3SWU5SGw=

They don't seem to be windows 8 certified though.
[Xoom Q&A, Help & Troubleshooting] DiGi760:
We finally got it. We used DriverEasy to look for drivers because we have a bunch of extra licenses and the drivers we had obviously weren't working. DriverEasy was able to install an "Android Bootloader" driver that must not be part of the SDK. Once that was installed, I was able to use fastboot to flash the images from above. The device is in good working order again and fully updated.

Thanks for all your help.
[Xoom Q&A, Help & Troubleshooting] Quantumstate:
Always nice to hit the Thanks button for those who've helped.
[Xperia Arc Q&A, Help & Troubleshooting] irefutabil:
Hy guys, I know in these days all attention is on KK, but I want to ask you, what GB ROM is one of the best between performance / fast / easily / battery life / nice looking. Never used a GB ROM on my ARC S, and I want to try one or few! Please, guys recommend one of the best

My eyes are on:]x-stronger_final|stable|fast|simple ver. & advanced ver. http://xdaforums.com/showthread.php?t=2271747

AtoMic GB 8.0 By XtReMeSiLeNcEr - http://xdaforums.com/showthread.php?t=2340089

Xperia Plus Version 10.1 http://xdaforums.com/showthread.php?t=2077316

Gin2KitKat v3.0.0 http://xdaforums.com/showthread.php?t=2250691

Arconium 8.2 - Peak Performance http://xdaforums.com/showthread.php?t=1325640
[Xperia Arc Q&A, Help & Troubleshooting] popthosegaskets:
Here is my answer:

http://xdaforums.com/showthread.php?t=2097137

Mod, please close thread.

僕のLT18iから送られてきた
[Xperia Arc Q&A, Help & Troubleshooting] 17th_angel:
I dont know if its allowed, but i bet that you wont be able to find any sustantial difference in performance in whatever GB ROM you choose.

Its basically reduced to what pleased you more in style/add-ons

Just try one and see it for yourself.
[Xperia Arc Q&A, Help & Troubleshooting] popthosegaskets:
Looks like I need to pull out that quote:

"Different people have different opinions on different ROMs because each person has a phone for different reasons."

Some use it for playing games, some use it for social activities, some use it for taking pictures.etc.

There won't be a ROM that can satisfy everyone's conditions for a ROM, so picking a ROM would be based on what you do with your phone. If you want good quality photos, stick with stock based ROMs. If you want to play games, use GB.

僕のLT18iから送られてきた
[Galaxy S III I9305 (4G LTE + 2GB RAM) Q&A, Help & ] ian619420:
Do any USA carrier branded s3 models come in sapphire black? or are only sapphire black s3 models are i9300 quad core version.
[Galaxy S III I9305 (4G LTE + 2GB RAM) Q&A, Help & ] JJEgan:
You do mean I9305 .