yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Accessories] barrmulio:
Has anyone come up with a solution or seen a connector for all 4 pins that doesn't require a gravity pressure mount (ie the weight of the N7 pressing down on the pins?)

I'm also doing a car install and need power + audio out - my Nexus 7 would be velcro'd/magnetized to the dash, but it's 'floating' somewhat so i need a more cable-like solution (like the N10 pogo cable, but since the 7 doesn't have the magnet holes I'm not sure how to secure the cable yet)...

I thought the dock might work if taken apart, but looking at the schematic from the german site I'm not sure how I can make that into a cable...maybe I'm better off fabricating a cable and hardwiring to the pins on the dock?
[Nexus 7 Accessories] theBeachBoy:
well, my gf accidentally threw my N7 on the floor this morning. So now cracked screen... not sure my RMA will work out now damnit!

---------- Post added at 01:17 PM ---------- Previous post was at 12:58 PM ----------

haven't found a way yet. I have bought many very small N52 magnets and will be testing some, now that I might have a scrap unit to play with (¢£¬¤£@¢±£).

I think there is way to build a magnet system external to the device. Where you have two small permanent magnets on the device (one each side of the pogo holes) and one each side of the 4-pin battery connector. It doesn't need much pressure anyway. This would be similar to the N10 system but not as pretty
[Nexus 7 Accessories] nyle:
I know this is an old thread but I thought I'd ask since I'm looking at this myself. Did you successfully get audio to work from the center pins? I'm looking at making my own docks with POGO pins. The charge sounds easy was there a trick to the audio or is it really just line out L and R.

Does anyone else think that $40 for a molded piece of plastic, a POGO connector, USB connector, and 3.5mm jack is just a little bit ridiculous?
[Nexus 7 Accessories] Flowyk:
take care when inserting magnets ... "magnet sensor" is near
[Nexus 7 Accessories] kcchen:
Probably easy enough to bend / shape a strip of plastic to snap the N7... or if really ambitious, generate a STL and 3D print (i.e. shapeways).
[Nexus 7 Accessories] nyle:
Love the idea but I won't pay $30 for it. :cyclops: The whole idea I'd be researching this thread for is because the Google dock is way overpriced for a little molded plastic, pogo pins, USB and 3.5mm ports.
[Nexus 7 Accessories] nyle:
Any more details?

Did you do anything fancy between the audio line out and the amp connection? I see the Google dock looks like it has capacitors on the 3.5mm jack but the video doesn't show enough details to confirm. Could you share what you did with the audio wiring to the amp?

Do you have a link to the supplier you used for the POGO pins?

Thanks for sharing. I love the Android design, I'd end up painting mine green. I tend to work in Sculpey clay instead of wood so we'll see how mine turns out.

Thanks,

-Nyle
[Nexus 7 Accessories] okaydoke0089:
How about stick those pins onto a hard back cover?
[Nexus 7 Accessories] DanRo80:
Any Progress?
[Nexus 7 Accessories] spizzak:
Would it be possible to use 4 small magnets to both hold a connector in place and act as contacts?

ie. http://www.first4magnets.com/f305--...odymium-magnet---0025kg-pull-x100-a1y-5-p.asp
[Nexus 7 Accessories] recklesstryg:
Nexus 7 Dock

http://www.youtube.com/watch?v=EnaTi96eXII
[Nexus 7 Accessories] UncannyValley:
it's not that anybody here doesn't know about the original dock, it's that people want to build their own solutions or dont wanna pay 30€ for some cheap electronics and plastic, that doesnt even work so well. :(
[Nexus 7 Accessories] recklesstryg:
I understand.
[Nexus 7 Accessories] UncannyValley:
As posted before, it does have some capacitors and stuff, look here: http://www.android-hilfe.de/zubehoer-fuer-google-nexus-7/376729-inside-nexus7-dock.html

I'm still struggling to understand how the power filtering works and so what spool to use (L3)... :confused:

With plain connected audio out I experience some noise.

So I would also appreciate if people share any other working setups with amps or know how to build the filtering right.

A rather annoying thing about the N7 Pogo charging:

If you plug it in it charges with around 2A, but if you slightly move the device, the power goes down to around 500mA and stays there until reinsterted into the dock. So if you dont realize it stepped down, it will discharge while sitting in the dock. Supposed to be the same on original dock. :mad:

[MENTION=2877572]recklesstryg[/MENTION]: nevermind :)
[Nexus 7 Accessories] spizzak:
Does anyone know the pitch/diameter of the connectors? I'm thinking about getting one of these:

http://www.digikey.com/scripts/DkSe...dSearch&Keywords=810-22-004-40-001101&cur=USD
[Nexus 7 Accessories] theBeachBoy:
Just check the battery connector I have posted to have the pitch. The diameter is 1mm
[Nexus 7 Accessories] spizzak:
I don't have any good way of measuring. I'd rather have correct values than estimate if anyone's got them. From what I can tell its around 3mm pitch though and I measured 1mm as well for diameter.
[Nexus 7 Accessories] theBeachBoy:
The pitch is 3.00000 mm.

As I said you just had to check the conn actor I linked ( http://www.digikey.com/product-detail/en/009155004301006/478-4688-1-ND/1687187 ) and see that it's 3.0mm

If a 4x 3.0 connector fits right in this means that even at 4x 3.0 mm = 12.0mm there is still no offset.
[Nexus 7 Accessories] Flowyk:
If the distance between pins is 3mm and you have 4pins then the distance between first and last is 9mm(it is), the tip of pin

has to have not more than 1mm so maximum size of top of connector must have max 10mm

It's not rocket science ... the most important size is how high you put the pins (torque on springs is low but you need it to have enough hight cause it's long)
[Nexus 7 Accessories] spizzak:
Sorry I didn't see that you had posted a link somewhere.

Also, what offset are you referring to?
[Nexus 7 Accessories] theBeachBoy:
I meant that if it was different than 3.000 the error would accumulate over 4 times and the 4th pin would be offset from the 4th hole when aligning the 1st hole.
[Nexus 7 Accessories] Flowyk:
Good theory but only 3 times
[Nexus 7 Accessories] theBeachBoy:
Yes you're right.
[Nexus 7 Accessories] cresswell:
Hey all,

I have used the POGO pins from an old guitar hero guitar (where the heck joins to the body on the older Les Paul GH guitars) They are spring loaded and there are 8 of them for when I (inevitably) have to start again after messing up (this is just a test rig and despite the odd angles the pins fit exactly)
[Nexus 7 Accessories] jolle-pe:
Which Connector (Pogo, Battery Connector, Pins) do you recommend?

I wanted to order the battery connector, which "theBeachBoy" posted before.

But for a electric part which costs 2,50€ - i'm not ready to pay 18€ only for shipping :(

What do you think about this part?

http://www.conrad.de/ce/de/product/716726/Stiftleiste-RM-300-973-10-004-00-W-P-Products-Inhalt-1-St

I planned to buy this and between tablet and the bottom side of the pins, i place a buffer
[Nexus 7 Accessories] bigbop:
Go to your local junk or second-hand store and find a cheap old cellphone that uses a battery whose terminals have the same spacing as the pins on the side of the N7. Then, carefully rip the battery connector out of the phone and use that.
[Nexus 7 Accessories] jolle-pe:
Which cellphone does have the same pitch?

Gesendet von meinem GT-I9100 mit Tapatalk 4 Beta
[Nexus 7 Accessories] bigbop:
Look at old Motorola phones. Many of them had 4 terminals on the batteries.
[Nexus 7 Accessories] redleader36:
Such good information here! I am going to have to look through my old cell phones now!
[Nexus 7 Accessories] bigbop:
The pins on the side of the Nexus 7 are 3mm apart (0.12") if that helps.
[Nexus 7 Accessories] nook_lover:
Hello everybody. My 'tilapia' is not charging through the USB port anymore. I guess it's something wrong with the port itself and not with the cable because I tried to switch it and it didn't help. Is there anyway I could use the POGO pins for charging with a USB cable? I know about the POGO 5V and ground pins, but I can't figure out how to make it work with a USB cable. Any help would be appreciated.
[Nexus 7 Accessories] limpet:
See msg #86 in this thread. The red and black wires in a USB cable are

+5 and ground respectively.

The ASUS pogo pin dock is available at a lower price than before:

http://www.newegg.com/Product/Product.aspx?Item=N82E16834989354

http://www.amazon.com/ASUS-The-Official-Nexus-Dock/dp/B009UQZPA0

My usb port died recently and I've ordered a dock from Newegg. Apparently,

the pogo pins do not provide USB functionality, so I'm planning to fix the

tablet when I can get working parts.

http://www.ifixit.com/Guide/Nexus+7+I-O+Assembly+Cable+Replacement/9925/1

There are lots of broken screen n7s for sale on ebay...I'm hoping the one I

bought has a working I/O assembly. If the motherboard is working, I'll replace

my 8gb board as well.
[Nexus 7 Accessories] nook_lover:
Thanks for the info. I did some research and I found out that ME370T_IO_FPC R1.2 board as well as R1.3 are compatible with all Nexus versions including 3G. Now I am trying to confirm if R1.0 board is compatible too. Here's the board we need:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=261247447506&ssPageName=ADME:X:RTQ:US:1123

I believe $60 is a lot for that thing, so trying to find a broken Nexus for that.
[Nexus 7 Accessories] limpet:
I've seen the i/o assembly for around $40, but that's about what you pay for a broken

N7. Of course, the risk is that the fragile microusb connector will be worn out.

If you have access to a SMD rework station, here's the connector itself:

http://www.etradesupply.com/asus-google-nexus-7-tablet-charging-port.html

and how it's done:

https://www.youtube.com/watch?v=YxxpLYf16fc

I suspect there's a thread about broken microusb connectors on the n7.

It's a real problem....I'll look around.
[Nexus 7 Accessories] nook_lover:
Unfortunately no access to an SMD rework station. I've never used my Nexus for transferring files over USB from my PC, so I guess I end up getting the dock with POGO pins.
[Nexus 7 Accessories] castellum:
Programs shutting down when loading with PoGo

Hi There,

I have been reading this topic with a lot of interest because I recently manufactured a Car mount using the contact of the Pogo connector.

I encounter a very annoying problem now.

The main reason for using the device in the car is navigation.

I use an app called Sygic that works great for me.

I often start the program and loaded the routes in advance.

As soon as I place the Nexus in the mount the device changes back to the main Screen. Sometimes I get a black screen with a Clock.

That itself is not so bad but in addition to this the program's appear to be shut down.

As soon as I hit the Sygic button it (Sygic) restarts completely and I have to reload the routes again to proceed.

The same happens as soon as I take the device out of the mount again.

This does not occur if I load the device with a Usb cable so i appears to be some function in the software. Either Android or the app.

Any suggestions how to prevent this behavior?

Kind regards
[Nexus 7 Accessories] limpet:
Check out Settings, Device, Display, Daydream.
[Nexus 7 Accessories] mrnovanova:
My Gnex has pogo pins too and I have yet to see readily available docks for it. I won't be holding my breath.:mad:
[Nexus 7 Accessories] snapilica2003:
The official car dock for Gnex makes use of those pogo pins. Also the Desktop Dock uses them also.
[Nexus 7 Accessories] ryhamster:
see iv not done what you did i made jumper cables with crimping stuff il show you if u like. iv had an idea to make in the dock im doing but i think there is a update coming but yeah il trys ur way soon
[Nexus 7 Accessories] dcplaya:
Why would there be an extra pin if its just for sound? They could have easily done that with 3 POGO pins.

I know there is a thread somewhere for the GN POGO, one of the pins needed a special voltage before sound would activate. Maybe this is similar?

http://xdaforums.com/showthread.php?t=1614287
[Nexus 7 Accessories] ryhamster:
Well this what i made to go on the pogo pins when im in the battery menu it goes from discharging to not charging so im not sure if it needs more power

Sent from my box
[Nexus 7 Accessories] brndnddge:
Android Dock Leaked.

Found this article. Might help everyone out a bit. http://androidcommunity.com/official-nexus-7-dock-and-accessories-leaked-20120731/
[Nexus 7 Accessories] dcplaya:
I doubt it. One of 2 things are happening

1) The battery temperature is too high and charging has been disabled to protect the battery. This happens all the time on my GN when I am in the car

2) The pins require some sort of pulse to enable charging (Just like the GN, the thread I posted earlier talked about a 100ms pulse). This is there so you cant accidently short out the pins. They are disabled until that pulse activates them.
[Nexus 7 Accessories] ryhamster:
hmm im have to look into that the second one sounds right
[Nexus 7 Accessories] mrnovanova:
I did mention readily available so if I can't drive to best buy and pick one up but instead have to find some specialized website because it's not even available through Samsung's own website to me does not qualify as readily available. Who actually owns a pogo pin dock and where did you get it from?
[Nexus 7 Accessories] El Daddy:
https://play.google.com/store/devic...nexus_hspa_pogo_desk_dock&feature=accessories
[Nexus 7 Accessories] Tcsnyder:
I am thinking there would have to be an update before a dock was released. The home screen is only portrait, so it would be pointless.
[Nexus 7 Accessories] AraDreamer:
Uh, they said that when the tablet is connected to a dock via pogo pins, that it would rotate the home screen automatically, didn't they? and if the worst we have to do is update the device and re-root it (assuming ota root keeper fails), then I'm a happy girl. Besides, looking over the home screen threads in themes/apps, most ppl have launchers and home screens in landscape already. But if they have to update to allow this, they may update the stock launcher to rotate automatically without being plugged in, too. We just need the price of the dock to come down from 40/50 bucks. -Ara
[Nexus 7 Accessories] pokey9000:
The homescreen has different layouts depending on the DPI. At lower DPI it will rotate to landscape. It's possible the landscape one is triggered by the dock state changing.
[Nexus 7 Accessories] LaKraven:
Here's what I think (and will try as soon as I get back to my workshop):

V+

D+

D-

V-

In that order...

Run 5v to the top pogo pin, we'll get to the second and third in a moment, run Ground to the 4th.

Now run a 5.1v Zener Diode between 4 and 3, a 100ohm+ resistor between 2 and 4, and I'll bet dollars to donuts that'll cause the N7 to register it as a valid charger when switched on!

Try at your own risk! I'll be trying when I get home, but I'm not responsible if you try this and it breaks your N7!
[Nexus 7 Accessories] pokey9000:
Why would you need a Zener if pin 4 is ground and pins 2 and 3 are floating? Also if it is actually USB, then the pullups would have to be built into the Tegra and be able to be switched in and out.
[Nexus 7 Accessories] peterpressure:
Please let me know how this works for you!!!
[Nexus 7 Accessories] vivanshah:
if the pins are indeed D+/D-, i'm hoping the official dock uses the ADK 2012 usb audio spec to output audio over pins instead of via bluetooth.
[Nexus 7 Accessories] peterpressure:
What are you basing this on? I have been unable to initiate any USB connection using the 2 middle pins as D+/D-

Have you had some success? Please let us know the details!!!

I was really hoping someone could point us to the C file that contains the POGO details software wise.

How long of a pulse, what the pulse gap is to initiate a connection, etc...
[Nexus 7 Accessories] vivanshah:
no solid proof, just hoping that they are indeed data pins.

looking at gnex and nexus one, which both used bluetooth for audio transfer, they only had 3 pins, 2 for charging and a 3rd which pulsed to signal the phone to enter dock mode/connect via bluetooth. having 4 pins gives me hope that 2 of them are for data.
[Nexus 7 Accessories] mariolouis:
I'm afraid the 4th pin might be for audio out if that's the case. No usb via pogo like everyone was hoping for.
[Nexus 7 Accessories] castellum:
No luck

I Just tried Switching off the 'Daydream' setting.

But this does not solve it.

No Clock anymore but

It stil switches to the main screen as soon as I remove the device from the cradle and also when I place it in the Cradle.

And the App's are stopped.

Any other idea's??

Thanks
[Nexus 7 Accessories] xj220gt:
Do you have a custom ROM installed? On my tablet it asks what to use, daydream or tasked. I select tasker

as always and it never changes screens when docked or undocked.

I'm on a custom ROM called slimkat and using tasker though.
[Nexus 7 Accessories] castellum:
Sygic

I'm not using a custom Rom,

But I did do some extra testing.

I'm not sure why I thought it stopped all App's but I now think it only happens when I have the Sygic application on screen.

I guess I have to report a Bug with them.

Kind regards
[Nexus 7 Accessories] limpet:
Have you tried starting navigation before docking? Nav apps I've used keep running in the background once they start navigating and only stop when they are explicitely shut down.
[Nexus 7 Accessories] castellum:
Sygic

Yes I did,

That is exactly the point.

Sygic can run in Background, It is an option that can be switched on and off in the settings.

I have this switched on.

I first start navigation and then place the Tab in the cradle. The App then stops. No error message.
[Nexus 7 Accessories] djkid:
I did a hard wire setup

So I had a Samsung tab first one and had gotten the car holder for it the oem one. SOLD the tablet and picked up nexus 7. After fiddle and being cheap I tried making the pogo pin but didn't work out the way I wanted to kept cutting in and out of charger so in the end after some modification I was able to use the Sam holder and fit my nexus 7 in it.

I also made a headset jack on the rear of the case to plug in the audio in to my system to have clean audio. I retro fitted the power into the existing charging port of the tablet so it completely portable and go between cars . Below are pictures of it.
[Nexus 7 Accessories] anarchyuk:
heres what i did, sorry no pics as camera is broke,

I got pin headers for pcb's like the one' syou used to mod the very first xbox.. snapped off 4... pulled the pins out the middle 2 (unless you need them) then cut a printer style usb cable up and soldered black and red wires to edge pins.

I then hot glue gunned enough of the plastic to stop the pins moving about..

then bent the 2 end pins that were left a tiny bit to the side..

The i just weigh the connector down with pliers and press the nexus onto the plug and it charges on or off to full.

wats the best amp for speedy charging from wall?
[Nexus 7 Accessories] Troute:
A 1.5 amp charger will charge it just as fast as 3amps or 20 amps.
[Nexus 7 Accessories] anarchyuk:
aye found my original nexus charger and it charged in no time, cheers pal ;) missed my nexus been sitting there for a year in perfect nick
[Nexus 7 Accessories] Troute:
I have mine on the kitchen wall as a music player / internet radio. :)
[Nexus 7 Accessories] jollymonsa:
nexus 7 dock audio sound bug

I replaced my car dashboard radio with a moulded nexus 7 dock and its great....except! I have a bug in the software that is prolly in the services.jar file that when you have the power off, n7 on (like playing audio) then turn the car on it doesnt pickup the pogo audio transition.

Oddly it does always without fail register the power and starts charging. The issue is mitigated by going to settings > sound > dock >> audio then double tapping the checkbox to enable.

Any fixes that we know of?

This is standard for both my stock 4.4.4 and also for my cm 11 n7's

Thanks!
[Nexus 7 Accessories] GalayZloy:
I solved the problem with constantly failing connector. This connector is very poorly made because it always bends while charging and goes destruction of soldering. ASUS should have done it differently. The connector had to be made either rigid (without flexible flat cable), or vice versa more flexible (as did I - wire is more flexible and will not break).

One thing is no good - the battery indicator is still in the status "charging" when disconnecting the cable. I see always "charging". This is probably due to the fact that now tablet perceives microUSB cable as a dock-station and need send some signal when plugging and unplugging it. What you can advise me?
[Nexus 7 Accessories] jollymonsa:
That solder looks bad from the pics. I'd desolder that. It sounds like an issue that a short could cause.
[Nexus 7 Accessories] Bwanna:
I've read all of this forum and am going to try a slightly different approach. I'm going to try and fit contacts into a 3rd party N7 case holder. Considering the many out there, I want to try and fit something like this https://www.mill-max.com/assets/pdfs/019.3.PDF into the side of the case. Since I'm only interested in charging (will be taking audio from the stock plug), the plan is to very carefully slide two of these in with epoxy. Attach 18 ga wire and run to a 1.5amp charger. Stuff is ordered and will let you know how it works out.
[Nexus 7 Accessories] DarkN3ss61:
There are a lot of pages to read through so I skimmed a few, and what I can take from this is that I can silently change the tablet (without it saying its being charged) and be able to attach another usb device to the USB port at the same time. Is this correct?
[Nexus 7 Accessories] DarkN3ss61:
Guys help, I think I screwed my tablet, I applied 5v 2a to the pins and it did nothing, so I gave up. Later on in the day when I decided to change the tablet, I plugged it in and it says its charging, but it now won't take a charge

HELP
[Nexus 7 Accessories] monossidoz:
I can confirm that with the [MENTION=5685854]GalayZloy[/MENTION] solution the tablet think to be on charge even if the cable is disconnected.

But the main problem it's not that. The problem is that if you disconnect and reconnect the cable, the tablet doesn't charge anymore (tested with an amperemeter), because he thinks to be already on charge.
[Nexus 7 Accessories] GalayZloy:
To solve this problem I just soldered wires to the two zones (see pictures).

---------- Post added at 05:39 PM ---------- Previous post was at 04:58 PM ----------

sorry, but I can not upload images (stupid system!!!)
[Nexus 7 Accessories] Kvaks:
Sorry for not browsing 38 pages of back and forth speculation and guessing. What's the final word on what the various pins are for? I want to build a charging dock for my 2012 Nexus 7.
[Nexus 7 Accessories] GalayZloy:
Yes, you can make it by using POGO pins. you can follow for my expirience _dropbox.com/sh/7pb12fffln45y2i/AABdN2siNEGX-QZk4hc6gFo0a?dl=0
[Nexus 7 Accessories] brainvision:
hi giuys

I'm thinking about building a dock for my two tablets a Nexus 7 and an iWork 10'': the nexus have as you all know 4 pins but the cube has 5.. I don't know if it would be possible to build a dock for both, but my first question is: are pogo pins identical? Do I need to search for specific info about pins of each devices?
[Nexus 7 Accessories] Charles IV:
It probably wont work, but in theory, yes.

I've been spending the whole day holding a stripped cable against my tablet, breaking the cable, stripping it again, and holding it against my tablet.