yashsingh1/xdaforums huggingface dataset:
[Nexus 7 General] iiolivier:
Hello,

I share in this thread, my experience of mounting a 2012 Nexus 7 in my 2008 Toyota avensis.

The biggest problem was about :

- Power : a Nexus 7 tablet will not boot, or behave strangely if battery is over discharged. This is a real problem because you have to take care of battery deep-sleep when not in car, remove battery heater apps that will prevent to sleep (frequent with GPS apps). To resume, having a battery in the Nexus 7 in car install raise a lot of complication.

- Risk and security to have an Li-ion battery in the top of my dashboard (danger with high temp and direct sun exposition) : Even in north of France, direct sunlight can raise very very high temperature at the top of the dash. So i was very worried to have a lithium battery. For my safety. I was afraid to find my car burned. It can arrive. I think it's really not a good thing when i see other in-dash mount that keep battery inside the nexus.

So, i decided to

remove completely the Li-Ion Battery

, and power the tablet directly from a 12V->3.7V DC converter, connected to my cigarette lighter.

Everythink work perfectly now. The only two small side-effect are :

- Car ignition will shut off power 2 ou 3 second, and tablet will reboot.

- 40 seconds boot time. It could be long, but i am rarely in my car for less than 2 minutes. So it's really not a problem. My Tom Tom GPS sometime take 30 seconds to be ok.

Total cost for this project are

- 15 dollar for 12V->3.7V converter on ebay

- 130 dollar for a 16G Nexus 7 on ebay

- 120 dollar for a genuine toyota navigation dash mount extracted from an broken avensis that had toyota GPS.

- Some dollar for adhesive, cigarette lighter plug, etc...

Here is some photo. I will add photo from inside if someone is interested (maybe not for a Toyota).

The main interest is to share for my Power problems

(sorry for my french-english)

My avensis before nexus 7 install

ebay - 12V to 3.7V DC Converter

ebay - Genuine Toyota GPS dash part

Final mount
[Nexus 7 General] edwin108:
Battery Wires

Which battery wires did you connect the DC-DC converter to? I see the connector has 2 red and 2 black wires.

Thanks
[Nexus 7 General] nicholi2789:
That is amazing. It turned out very professional looking and clean. May I ask how long it took you to get everything just right? i.e. months, weeks, ect. Very very impressive work.
[Nexus 7 General] bigjayr:
this is really cool
[Nexus 7 General] iOlivier:
On the Nexus 7 :

- I cut the small battery connector keeping the longest cable possible (so i have say bye bye to the battery !)

- I have connected

> the 2 red cable of the nexus 7 connector to the red DC-DC output

> the 2 black cable of the nexus 7 connector the the yellow DC-DC output

> I cut the yellow and white (the 2 remaining) cables of the nexus 7 connector. Those 2 cable role is to let the nexus 7 know about the temperature and battery status. Not anymore useful as no more battery.

---------- Post added at 09:21 PM ---------- Previous post was at 09:17 PM ----------

Thanks. After 3 month, everything work perfectly. It took me about 1 month before i was able to find the best balance.

I unmount Toyota dashboard about 4 times (bad wire, with battery / without battery, etc...)

I really stressed the Nexus 7 and i can say it's really robust !

I am not worried anymore of battery explosion. I wait 45 seconds before tablet is ready to work.
[Nexus 7 General] Bawb3:
Nice install! I'm going this route with mine.

Are you using Timur's Rom/Kernel?

How did you set it up to power on with the car without having access to the power button on the N7?

Thanks!
[Nexus 7 General] iCiros:
I wonder if I can do something like that on my car... And how to make it pleasing.
[Nexus 7 General] unleashurfreak:
looks great very well done
[Nexus 7 General] Be6i4:
[MENTION=5483078]iiolivier[/MENTION] Wow man - that's awesome. I have toyota avensis 2003 with GPS included. And I already have Nexus 7 2012.

I will definitely try this.

Can you provide any link for this dc adapter, please? I'm not well-known with electric, wires and etc. (maybe PM to me will be great). Thanks in advance!!!

Cheers from Bulgaria!
[Nexus 7 General] dimex:
I've had my Nexus 7 installed in my truck last year, but am concerned because I live in Arizona and it's starting to get hot. So there are no issues removingthe bbattery and running the Nexus 7 directly off power? What if I'm currently plugged in from microusb port of tablet to a cigarette lighter charger? this is all hidden behind the dash. Will it still receive power this way?

I'll try to find it as I did this mod last year and didn't save the url. There is a bootloader adb mod where you can set the Nexus 7 to boot by itself when it receives AC power. I have it set up to boot when key turns ignition and power off after 1 minute without power, using Tasker.

Edit, here's the adb command to have the tablet power on when it receives AC power
[Nexus 7 General] miatawnt2b:
you could connect your 3.7v adapter to a constant 12v line and then connect your usb OTG power adapter to a switched 12v line. Then use tasker to detect when the 12v switched goes dead and 'hibernate' the tablet. Then the tablet would run in low power mode off of the car battery untill you turn the car back on. No waiting for the tablet to boot that way and you would keep your time/date.

Great idea about the 3.7v adapter though. I'm stealing that one so I don't need a LiIon battery in the tablet at all.

-J
[Nexus 7 General] dimex:
Were you replyingto me? II'm not well versed in electrical tinkering. What would I have to do to take the battery out of my tablet, if you don't mind explaining. Currently the tablet is receiving power through a cigarette lighter adapter hard wired behind the dash. When it receives power it boots the tablet, when power is off Tasker shuts down the tablet after 1 min. I'd like to take the battery out because of extreme temperatures here.
[Nexus 7 General] movy:
Can you tell me how did you install the nexus 7 inside the toyota navigation dash mount ? It's not to biger ? Do you have any pictures from inside the unit with the system mounted where I cand see how you mounted (fixed) the tablet inside? I wont to do the same thing, but my problem is that Nexus 7 (2012) has this dimensions: 198.5 x 120 and do not fit inside. The inside dimensions are maximum 180 x 110. Please help with some pictures. Thanks.
[Nexus 7 General] dimex:
I'm in the process of upgrading from the 2012 N7 (which I just sold) to the 2013. I wanted to fill in the gaps on either side of the tablet in the dash because it was bothering me. Here's what I did.

I dremeled the sides of my dash and a bit behind it to accommodate the tablet. You may need to do a little dremeling/sanding to accommodate yours. I then built a 3 sided wooden box that serves as a double DIN dummy to mount the N7 too. The dimensions are:

Front face: 7"

Sides: 5 1/2"

Top and bottom: 5 1/2"

As you can see in the pictures, I cut out a portion of the sides and bottom so it could wrap around the single DIN radio that's behind the N7 in the dash. The box wouldn't have fit for me otherwise, but for you, at least leave the back open so you can put cables and stuff inside.

I left the side mounts that the old radio bolted to in the truck, so basically the box slides in and is held in place just by the pressure from the sides of the mounts and the front when the dash is put back on.

On the wooden box I put two strips of double sided sticky tape. I chose the heavy duty 5lbs, but it's a little more than what's needed and makes adjusting a pain. Just use the cheaper 2 lb strength tape.

On the front of the box, attached to the sticky tape, I mounted a hard plastic snap on case/shell for the tablet (only thing not pictured). The tablet snaps into the case and is subsequently held on the box. You can just take the tablet out of the case if you need to remove it. That way, you're not affixing the actual tablet to the box.

Finally, I had spaces on either side of the tablet (the dash was a bit wider than the tablet itself). I lived with it for a year, but it was ugly and I finally decided to do something about it. I bought standard double DIN trim for a radio, dremeled, sanded, and cut it so it fits, and taped it to the sides of the tablet (pictured). Now, there won't be any spaces, and it looks like it's actually a factory install.

Hope this helps.
[Nexus 7 General] movy:
I want to know how he mount Nexus 7 in Avensis T25 dash navigation. This is a picture of 2 way to install: the whole tablet (in first case) or only the lcd touch screen in original frame of navigation. For example this is how it fit a GPS Lexand (Russian) inside the unit. The dimensions of the gps-tablet in this case are max 180*110 mm to fit in. And olso, the dimension of lcd (of image) are max 155*90 mm to fit in (la lcd of 7") . This is my problem in finding a tablet with this exterior size and with this lcd size.
[Nexus 7 General] Mugga:
Hy guys,

today I also tried to remove my Nexus battery to power it directly. Sadly it isn't working!

The screen is flickering one time, after I hit the power button. Does someone know what could be the issue?
[Nexus 7 General] miatawnt2b:
can you take a pic of how you hooked it up?

50,000 foot howto:

You will need a 12v to 3.7v converter. take the + and - 3.7v wires and attach them to the red/black wires of the battery plug. If you don't want to cut the plug off the battery you can solder directly to the board where the connector is attached. There are an additional two wires off of the battery plug I believe they are white/yellow. I think these are temp sensors. You should be able to leave them unattached, but I haven't played with it yet. You may need to bridge them with a small resistor.

-J
[Nexus 7 General] Mugga:
Haven't got any pics, but i hooked them up directly without the battery. The two red lines with the plus line, and the black ones with ground.

I tried it with my car dc-dc converter. I can program the voltage down to 4,2V. I also measured the voltage directly at the nexus pcb, and it says 4,15-4,2V. I tried it with different voltage levels, up to 5v. When the voltage is too low, I just get one flickering. With a little bit more, I get something like a grey screen. And with round about 5v, I get the Nexus startup screen for about 2 seconds, and then the screen is going black, but the backlight is still turned on.

When I attach the battery like before without any external power, everything is running smooth. I don't really see what could be the problem. The dc-dc converter is able to provide 10A.

EDIT:

Nevermind got it working!

The problem was that the wires for the testing at home where to thin, to provide enough juice (Ampere). After going with two cables for each line, the tablet was booting fine. Any way thx for the help.
[Nexus 7 General] riggedveda:
Hi. Great post, thank you! I plan to do the same but had a few questions:

1. How is it faring over long term use? I imagine the 12V from a car battery is pretty 'noisy' so my concern is with device longevity.

2. Does the N7 2013 model work with 3.7V as well, or does it need a different voltage?

3. Are you able to hook up USB devices using an OTG cable without the battery?

My ideal solution would be to hook the N7 battery connectors to an 'always on' power line and the micro-USB connectors to a switched power line. This way I can use Tasker to hibernate/shut-down the N7 when the car is turned off. A trickle charge after hibernation/shutdown probably won't drain out my car battery too soon. I'm not so much concerned about start-up time (though a quicker startup through hibernation would be a bonus), but rather the concern that repeatedly shutting off power to the tablet abruptly (without giving it a chance to shutdown) probably wouldn't be good for it.

Obviously the assumption here is that the N7 uses voltage detection at the micro-usb connection to determine if power is incoming to the battery. I'll need to test this out. But I want to know if OTG even works (I need it for backup cam) before I tear down my N7 and start poking around with a multimeter.
[Nexus 7 General] xyron_2k:
question

Hi guys. After few long weeks I finally managed to put my nexus 7 in.

Everything works pretty much ok but I was a bit worried about the battery so I bought a power supply buck module, which proved to be a beast . Provides my continuous 3.7V, having the battery removed without any problem AT ALL.

I would like to know if someone tried something similar because I am a bit concerned about the power consumption. Is it ok to leave it on all the time, or not ? Please advice.
[Samsung Galaxy Mini] polys643:
So i installed Cyanogenmod 10.1 on my GT-S6500 and decided after a few days that I wanted to go back to stock. I downloaded the firmware from sammobile and flashed via Odin. Now it's stuck in boot loop and I cannot get into recovery. I flashed CWM but still cannot go into recovery. I can only go in download mode.

Anyone that has any idea on how to resolve this?
[Samsung Galaxy Mini] Nasheich Xfiles:
try to reflash your stock rom from the Odin again

maybe there's something you miss

read the instruction carefully

Don't forget to hit THANKS button
[Samsung Galaxy Mini] Peky031:
http://xdaforums.com/showthread.php?t=2516190

Try with second option, that works for me! ;)

If works just wipe everything and flash stock or CM! ;)
[Xperia Arc Q&A, Help & Troubleshooting] Taz3m:
Hello,

Before im writing a post here, i made loads of search,but i think i will need some advanced help from advanced users.

My situation is as such, one of my friend asked me to refurbish his OS on his SE ARC, taking note that he had his back button not working(hardware issue).

1. I unlocked his bootloader

2. Download custom Rom (Racing Bean) and FXP kernel.

3.Placed the Rom.zip into his SD card

4. Use flashtool by doomlord version 0.9.8.0, enter fastboot mode through the phone(Menu button) - success in flashing the kernel.

5.I think the battery was quite low, on rebooting the phone to enter recovery mode, the phone just could not boot up, just a vibration felt and the screen is totally blank.

6. I changed with my battery and i have been able to enter fast boot mode again, i flashed kernel again, different kernel this time, but still the phone wont boot up.

6. I cannot go into flashboot mode, since my back button is faulty, where i could have revive the phone by flashing tft file.

If i flashed the system,img through the fast boot mode using the flashtool, will i succeed, im downloading a system,img file and will try that as soon.

Can anyone suggest me how i can revive my sad friend phone . . . :rolleyes:

Looking forward . . Wont forget the thanks button as well.

Taz ..
[Xperia Arc Q&A, Help & Troubleshooting] popthosegaskets:
Can you try flashing a stock kernel and stock ROM instead? Also, did you check that the kernel is compatible with ROM? Battery must be at least 50% charged before you try anything.

僕のLT18iから送られてきた
[HTC Droid DNA] xlxcrossing:
I know it's a specific request I don't normally make them but colors are so much richer when this fix is applied. Will happily donate to any dev that can work it in.
[HTC Droid DNA] renzo.olivares:
i assume you mean with HTC's color enhancement and I assume you mean for viper dna lol because the stock kernel that i provided for them has it removed
[HTC Droid DNA] GavinMazey:
I've been running your wirelessnkernelfix.zip on viper for a few days and I've had no issues.
[HTC Droid DNA] renzo.olivares:
here you go fresh off the press

http://www.androidfilehost.com/?fid=23159073880936079

stock htc kernel with htc color enhancement
[HTC Droid DNA] renzo.olivares:
here you go fresh off the press

http://www.androidfilehost.com/?fid=23159073880936079

stock sense 5 android 4.2.2 kernel with htc color enhancement
[HTC Droid DNA] GavinMazey:
I can't seem to keep it straight. What's the difference between having the color enhancement and not having it?
[HTC Droid DNA] xlxcrossing:
Joelz thank you, you rock donation coming. And to clarify for people who don't know, colors and tones are richer with the fix applied. HTC basically oversaturates whites so colors are milky instead of pronounced. If you are happy with the quality of color on your DNA then it's not much to worry about. Once I recognized the difference it's hard to go back.
[HTC Droid DNA] xlxcrossing:
So I guess I'm looking for it without because the color balance is the same with this. If I boot zarboz 2.5 reloaded kernel the fix is present in that the color is more vibrant except when I turn screen off and on it reverts. Can you link a kernel without the fix applied?
[HTC Droid DNA] renzo.olivares:
that's really weird since the stock kernel in viperdna should have the fix applied but i'll see what zarboz did and implement it
[HTC Droid DNA] xlxcrossing:
What is it exactly, can I get a link?
[HTC Droid DNA] GavinMazey:
It's in joelz sense 5 4.2 Rom thread. I'm using it right now.

Link http://xdaforums.com/showthread.php?t=2359803 it's under downloads for the Rom dated 9/9 and labeled wirelessnkernelfix.zip.
[HTC Droid DNA] xlxcrossing:
Does this have to do with the color enhancement?
[HTC Droid DNA] GavinMazey:
Yes it's joelz stock sense 5 4.2 kernel without htcs color fix.
[HTC Droid DNA] renzo.olivares:
ill probably have it done in the next hour if ure still around to test
[HTC Droid DNA] GavinMazey:
I'll give it a test.
[HTC Droid DNA] renzo.olivares:
here http://www.androidfilehost.com/?fid=23159073880936238 i haven't tested this one
[HTC Droid DNA] GavinMazey:
Is this new one without HTC color enchantment?
[HTC Droid DNA] renzo.olivares:
yup.
[HTC Droid DNA] renzo.olivares:
so work?
[HTC Droid DNA] GavinMazey:
Yea I flashed the HTC enhancement first and it was pretty contrasty, it was hard to see the light greys in tapatalk. Then I flashed the newest color test and it's brought the greys back down to a visible level.
[Verizon Galaxy Note 3 General] ThatRoo:
::This mystical tale starts off with tragedy as most do. There I was enjoying my time at an anime convention. I was attending a room party sipping some wonderful homemade wine. My wonderful shiny Galaxy S4 pumping out music into the small radio on the night stand, while attached to a charger, as that little thing drains power faster than the energizer bunny! I walk outside to the poolside patio to partake in a puff of hookah and alas when I return merely one minute later someone had snatched up my phone and charger (All people I trusted...not doing that again)! Needless to say I freaked getting on the next computer I saw to try to locate my phone using Avast Anti-Theft (Never using it again) apparently the web console said that it wasn't installed when it was. My poor phone still on with 20% battery ringing with every call I give. Lost. Gone. Unable to be located. (Google backup codes missing from my wallet...it was a bad night).

::Anyway enough rambling about missing phones. I decide to turn this tragedy into a win...The wonderful Note 3 is coming out I thought! I shall wait to acquire it, its only a week off! So there I was, yesterday, heading to the Verizon store in Paradise Valley, Arizona. As I walked in the doors something magical was going on inside....a release party for the Note 3! There were attractive women and men giving tours of the Note 3 + Gear and handing out free stuff. I was swiftly handed a bag and given my first item a Galaxy Note 3 branded thermal cup (The clear ones that you see everywhere). This kinda makes up for some stuff I thought to myself, this stuff is cool! I also proclaimed to the person in charge that I was here to purchase a Note 3. I went over to the rep area after getting other items from the people around the room including two 4GB branded thumb-dives, two headphone splitters, and two microfiber cleaning clothes and a phone holder for your desk. This is where things get amazing....apparently this store unknown to me was a new corporate flagship or something and the first 25 people got free Galaxy Gears....I was number 25! After I finished up getting the phone the woman comes over with a galaxy gear backpack and hands me it and the Gear inside.

I think that makes up for my S4 getting stolen.... :D

:: TLDR: Got a free Galaxy Gear.
[Verizon Galaxy Note 3 General] skyline23:
Awesome story!!:good:

Enjoy the GG, it's a fantastic device.
[Verizon Galaxy Note 3 General] ThatRoo:
I look forward to doing just that on Monday! Gotta wait for the note 3 to get here. XD
[Verizon Galaxy Note 3 General] erwinyap69@gmail.com:
Hey.. TLDR- is this Chris. P??
[Verizon Galaxy Note 3 General] ThatRoo:
Nope this is James K.
[Verizon Galaxy Note 3 General] bossei:
Great story; congrats. I lost my phone a few months ago and it was the worse feeling EVER. Glad things worked out great for you. Try Norton Security Antivirus. You can track your lost phone and do remote wipe. Pretty good.
[Verizon Galaxy Note 3 General] ThatRoo:
Nah I'm just gonna get my backup codes printed properly and lamented and use Google's Android Device Manager. Nortons always left a bad taste in my mouth. :) Should check it out it looks spiffy.
[Verizon Galaxy Note 3 General] chrisnosleep:
What are these backup codes you guys are talking about?
[Verizon Galaxy Note 3 General] b00mb00mchuck:
The negative to your positive

My story is so completely and entirely opposite of the OP story... it's the negative of his positive...

I was waiting for this phone for a long, long time.... coming off a two year old DROID Bionic that never had a single problem... perfect condition... never had a scratch... and I hated it... it was slow and sluggish and was never gonna see another update.

I was on in store preorder from day one and the waiting was painful... I was on the note 3 xda forum everyday like a stalker, listening to all the cool stories about the releases going on other networks and watching all the YouTube reviews and unboxings... then... finally... Our launch day came on Thursday and my FedEx tracking showed delivered at 10 am or so.... I went flying down there at 3:30 right after work and there were two customers and two workers in the store... walked around waiting for a salesman to get free and noticed... There was no display... no note 3 to play around with while I waited... then I heard "can I help you sir?"..... "yeah... I'm here to pick up my preorder note 3"... dude says... "oh cool... I wanna see that"

Long story short, he goes and grabs the box and comes out... starts pulling the cover off the box and I give him my speech about "don't do that... I just payed a lot of money for that and ain't nobody touching it but me".... He smiles and gives me the "know it all" look and we do the whole activation dance and whatever... During the process he tells me that was his one chance to play with the phone and I screwed it up... :rolleyes:

TLDR: I was the Galaxy Note 3 launch event in Fort Pierce Florida
[Verizon Galaxy Note 3 General] alprazolam:
Very cool story OP. There was absolutely no fanfare around my experience. Was the only person in there for the phone and a nice guy helped me out. Took about an hour to get in and out the door. No party. No giveaways. Glad I got this phone though, and interested to talk to people who got the Gear. Not seeing a dedicated section for it. Seems to have so much potential, but I wonder if it will get very much attention at all.
[Verizon Galaxy Note 3 General] Brandonrz:
Delete
[Verizon Galaxy Note 3 General] dirtyfingers:
Good idea. Android device manager works great
[One (M7) Q&A, Help & Troubleshooting] 3alaawi:
Been trying to get the stock recovery back as I'm sending my phone to HTC for repairs (bottom mic seems broken, all I hear is a loud static noise in recorded videos and can only use my phone on loudspeaker as it uses the top mic).

Anyway, I've tried the stock recovery here http://xdaforums.com/showthread.php?t=2224752 but it won't boot to recovery.

I'm on stock 4.3 sense rom. HBoot 1.54 and *don't know what this number is for* 2.24.401.1

So, can someone help me out with the necessary recovery link?

Also, I know this won't remove the tampered and relocked in the bootloader, but will it matter if I send it to htc this way since its a hardware issue. Does anyone have any experience with this?