Database Develop

[HACK] Hardware HDMI/MicroSD Hack? Unused Pins/Connectors

HI! i've found some pics of the nexus 7 motherboard and some connectors seems to be unused... If you look at the "con1" (the one used for micro usb connection) it has 22 pins 0_o. Maybe we can find a hardware hack =D
More images here
We could do a "simple" (dangerous) test: HDMI has a hot plug detection pin, the only way to check is provide one pin with +5v dc and check if any other pin sends a ddc query.... but how can we find the hotplug pin (if there's any)?
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From the teardown it was pretty clear there was space for the rear camera as well as HDMI.
The IO presenters were using units with HDMI, so it was probably the same motherboard, populated.
You would have to be a hard-core hacker to want toi add your own HDMI. No idea what is missing beside header and connector. Probably not as bad as adding MHL
I am happy living without HDMI.

Maybe I will never use the hdmi connector but hacking electronical things when i have to hack biological ones every day is a nice way to spend the time xD

Israafiyl said:
Maybe I will never use the hdmi connector but hacking electronical things when i have to hack biological ones every day is a nice way to spend the time xD
Click to expand...
Click to collapse
6 billion dollar men?

Caliyork said:
6 billion dollar men?
Click to expand...
Click to collapse
Nope =P 6 billion dollar mice xD
Biotech

Google also plugged the nexus 7 into some kind of docking station to project the screen onto the wall for the visitors on Google io conference..seems they have a version with video output like HDMI
Sent from my HTC Desire using xda app-developers app

There has been an image of a Nexus 7 with a HDMI out.

ben1066 said:
There has been an image of a Nexus 7 with a HDMI out.
Click to expand...
Click to collapse
Source please
Sent from my HTC Desire using xda app-developers app

Can't back it up right now but will frantically google to find it.. But I remember reading that it had the hardware for mhl but currently not enable in software?
but just tested my jellybeaned gnex and that works fine with mhl so not sure how much truth there is to that.

I can vouch for the photo of a Nexus 7 with an HDMI port, as well as a comment from a presenter that the special units they were using for presentations had HDMI.
No, I can not provide any links. That was thousands of pages ago...
I do not believe the Nexus 7 has the MHL chip, or any provision for it. Asus is not listed as a MHL provider.
Samsung (Nexus) is a MHL provider, so the hardware there would not be a surprise.

In that teardown review (where the OP got that image, I believe), they mistakenly said it supported HDMI out and included a picture of the HDMI cable from the nexus Q. They later retracted that comment.
That might be the source of the confusion.

There was at least one actual picture of a Nexus 7 with an HDMI port on the bottom.
I think a reviewer got their hands on a presenter's unit.

The image you're looking for is in this thread:
http://forum.xda-developers.com/showthread.php?t=1736916
The internel dev versions (the ones used for presentations) had mini hdmi.
So, it does make sense that theres space on the board.

Thank you for that picture link! I searched everywhere for that...
At least that is one less reason to think I have lost my mind...

I'd love to be able to solder on an sdcard slot, if that's all that's needed. It's generally pretty easy to solder to headers if you're careful about it.
Sent from my Nexus 7 using Tapatalk 2

From the teardown, I don't recall seeing any space for an SD card.
Rear camera - yes, HDMI - yes, but not SD Card.
I could be mistaken...
Also, the external storage problem has been pretty much solved with a USB OTG cable and stickmount.

we could solder a slod for an additional sd card... there's enaught space to fit in a sd card without "external" access.

How in the world has this thread not been moved/locked yet? Obviously not development, and hardly an original topic.

MWBehr said:
How in the world has this thread not been moved/locked yet? Obviously not development, and hardly an original topic.
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we're counting pins and waiting for more info =P
look here: http://guide-images.ifixit.net/igi/KjNsrjlvHZdFWEGF.huge
we have 14 free pins and an hdmi data connection requires only 12 wires + 5v + grnd.
i'm looking for someone who can do some simple tests on the unused pins.
when i will have the nexus 7 i'll do it by myself at uni but maybe someone who have the I/O version now could do something meantime.

Looks pretty interesting to me hope we cram a sd card In there somewhere.

MHL adapter in back of dock

SImple question,
if you buy a charging dock can you simply put the MHL adapter in the back into the micro usb port and have it charge/video out at the same time?
clearly the new 11 pin dock for an s3 or n2.
i couldnt see why this wouldnt work but just want to make sure. im planning on a nice little setup via HDMI and bluetooth keyboard/mouse.

The setup you describe worked with my galaxy tab 7" plus but not with my galaxy s3, so I'd be interested in the answer to this aswell

For me, i search the Saint Graal, a charging dock and transfer data with :
- Audio line-out
- HDMI
- USB
- Port SD ...
It's only a dream ???

it will work with Phones that doesn't have the extra pins that Samsung put in the micro USB port in the Note 2/S3 unless that dock has these pins unfortunately it wont work.

[email protected] said:
For me, i search the Saint Graal, a charging dock and transfer data with :
- Audio line-out
- HDMI
- USB
- Port SD ...
It's only a dream ???
Click to expand...
Click to collapse
i dont need usb or port SD or audio out, just want dock, i havent seen any HDMI docks for the note 2 yet.
Hell Guardian said:
it will work with Phones that doesn't have the extra pins that Samsung put in the micro USB port in the Note 2/S3 unless that dock has these pins unfortunately it wont work.
Click to expand...
Click to collapse
^^would the samsung adapter 5-11pin adapter work that you can buy for a few bucks?
i feel this is reasonable since a dock is simply an extension in some plastic.

The official smart dock has:
HDMI
3USB ports (you could plug in an sd card adapter)
3.5mm out
micro usb sync/charge in
cost 64.95 euros i think

duykhang524 said:
The official smart dock has:
HDMI
3USB ports (you could plug in an sd card adapter)
3.5mm out
micro usb sync/charge in
cost 64.95 euros i think
Click to expand...
Click to collapse
ohhh that sounds awesome! i thought the other guy was saying, that was the stuff he wanted in a dock and that was only a dream.

xxsupergman25xx said:
ohhh that sounds awesome! i thought the other guy was saying, that was the stuff he wanted in a dock and that was only a dream.
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did a quick google and this seems to be the case...err, dock.
http://www.gosmartdevice.com/official-accessories-for-galaxy-note-2/
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that means the note 2's usb port can work as an MHL and USB OTG port at the same time. i hope someone comes up with a portable dongle that does this.

oh wow, thats exactly the type of thing im looking for. thanks!

xxsupergman25xx said:
ohhh that sounds awesome! i thought the other guy was saying, that was the stuff he wanted in a dock and that was only a dream.
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Yes, it was me
Great news !!!
---------- Post added at 10:03 PM ---------- Previous post was at 09:58 PM ----------
finalhit said:
did a quick google and this seems to be the case...err, dock.
http://www.gosmartdevice.com/official-accessories-for-galaxy-note-2/
that means the note 2's usb port can work as an MHL and USB OTG port at the same time. i hope someone comes up with a portable dongle that does this.
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We have a date, shop and prize ?

Kidigi also do one: http://www.kidigi.com/product_lv2.php?pid=1418 but it apparently won't sync with a PC, so it's just an MHL dock. Doesn't look like it'll charge the phone well either as it outputs 500mA

Storage Solution: My Personal Take

I've been working on a little project of my own for the past few days, trying to fit the largest amount of storage into the smallest space. Here's the current version:
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And here's what's under the heatshrink:
It's an 8GB drive, but I could easily do it again with up to 32GB of storage. I shorted the 5th pin to ground, so it is properly recognized as though it were plugged into an OTG cable. The Micro USB connector is attached to the memory with JB Weld epoxy. I used a SanDisk Cruzer FIT USB drive to make this.
Thoughts?

yumcax said:
Thoughts?
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Respect! :good:
I can't say that I would do that myself, but I really respect your work.

Pretty awesome.

this looks like a fire hazard

Epic

Definitely intuitive man, great job.
Sent from my Galaxy Nexus using xda premium

You can make quite some $$$ if you starting making more and selling them:good:

Nice work man, I wouldn't have any idea how to do it myself though! :thumbup:
Sent from my Nexus 4 using xda premium

yumcax said:
I shorted the 5th pin to ground, so it is properly recognized as though it were plugged into an OTG cable.
Thoughts?
Click to expand...
Click to collapse
Great Project! Just to confirm, does USB OTG work with the Nexus 4?
On this thread no one seems to be able to make it work?

Just take my money please!

If it works, you should mass produce these.
Btw is that your nexus 4 already cracked?

azik said:
If it works, you should mass produce these.
Btw is that your nexus 4 already cracked?
Click to expand...
Click to collapse
It's a Galaxy Nexus.

have you thought about spraying it with plastidip to give it a shell?

That could work well. I'm currently waiting for the JB Weld to fully cure. This one was more of a proof-of-concept, if I make another it should look better and have more storage.

yumcax said:
Thoughts?
Click to expand...
Click to collapse
Does this drain the battery any quicker?
Let's say if you were using it to read data off constantly?

It looks dumb, they should have built it with an SD slot or have a 32gb model, will not buy until it does.

Good job to the Op - I don't see this sort of affair as a problem because I'd only need the extra storage while it's not connected to a charger or PC anyway.
But... Would it be possible for someone to make a very small USB connector that folds around the back (like a ribbon-cable sort of affair) to avoid the risk of snapping in the pocket - that way you could stick the SD Card on the back of the phone when you're using it.

Venekor said:
It looks dumb, they should have built it with an SD slot or have a 32gb model, will not buy until it does.
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Go buy a different phone with a sd slot and stop complaining, the OP's work is innovative to say the least, we'll done! A thought tho, a bumper case with built in storage device on the back, a small ribbon cable to a micro-usb connector in the bottom of it and voilà...
Edit: Previous post got in between, hehe... This is what you get for taking a break to smoke and chit-chat before typing out the last and posting... No offense, two people, same kinda idea! Awesome.
Tapatalked from my h4x0r3d up Maguro.

The way I see it:
Use a thick(ish) case, to protect the glass.
Make a mod like this, but with longer, flat cable.
Carve a hole in the case to accommodate and protect this all.
Use wireless charging since the microUSB port will be occupied at all times.
PROFIT.

OmgitzFire said:
You can make quite some $$$ if you starting making more and selling them:good:
Click to expand...
Click to collapse
If you do sell them, pls do not put us in the backorder situation again
Seriously, great job!

PQI Micro USB drives/OTG solutions [Engadget]

Hey guys, I just saw this article on Engadget. Apparently the company PQI had a lot of micro usb drives and storage solutions at Computex. Most of these won't be available until Q3 this year though, but definitely worth a look!
http://www.engadget.com/2013/06/09/pqi-connect-micro-usb-otg-drive/
They briefly go through each one, there are 6 in all with different quirks and things.

drewgillesp said:
Hey guys, I just saw this article on Engadget. Apparently the company PQI had a lot of micro usb drives and storage solutions at Computex. Most of these won't be available until Q3 this year though, but definitely worth a look!
http://www.engadget.com/2013/06/09/pqi-connect-micro-usb-otg-drive/
They briefly go through each one, there are 6 in all with different quirks and things.
Click to expand...
Click to collapse
Nice but too late, and if you buy those, you won't be able to use them on the pc unless you buy an adapter, so we are the same like now :crying: The best would be to make tablets with usb, but they would be thicker then.

Reserved?
Sent from my LG-LS970 using xda premium

lKBZl said:
Nice but too late, and if you buy those, you won't be able to use them on the pc unless you buy an adapter, so we are the same like now :crying: The best would be to make tablets with usb, but they would be thicker then.
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The 201 has both connectors in one. Standard USB for your PC, micro USB for your mobile device. No adapter needed.
Sent from my Nexus 10 using Tapatalk HD

I'd expect the quality of these devices to be top notch, but probably expensive, I have a PQI wifi SD adaptor that works seamlessly with every android device I've tried it with (via an app in the market).
For anyone interested :-
http://www.amazon.co.uk/gp/product/B00B5XC1M6/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1

Those are nice, but still not exactly what I want, which is a flashdrive that's Micro-USB *only* so that it can be made as small as possible,

scooterboy5 said:
Those are nice, but still not exactly what I want, which is a flashdrive that's Micro-USB *only* so that it can be made as small as possible,
Click to expand...
Click to collapse
Could of sworn I saw such a flash drive posted on the N10 forums somewhere in the past

espionage724 said:
Could of sworn I saw such a flash drive posted on the N10 forums somewhere in the past
Click to expand...
Click to collapse
Kick starter project.
Sent from my Nexus 10 using Tapatalk HD

freshlysqueezed said:
*snip*
Kick starter project.
Click to expand...
Click to collapse
Yup, that

freshlysqueezed said:
Kick starter project.
Sent from my Nexus 10 using Tapatalk HD
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Yea, im a backer of that project. The screen you posted, the first one, is it just an adapter?

According to the article, it is a usb drive with either 16 or 32 gb.
Here is another one that is similar to the kickstarter one, but it also has the standard usb connector on one end and the housing slides to expose the micro usb connector on the other end. I like how the micro sd card slides into the usb connector.
Sent from my EVO using xda app-developers app

espionage724 said:
Could of sworn I saw such a flash drive posted on the N10 forums somewhere in the past
Click to expand...
Click to collapse
freshlysqueezed said:
Kick starter project.
Click to expand...
Click to collapse
That's not a flash drive, is it?

scooterboy5 said:
That's not a flash drive, is it?
Click to expand...
Click to collapse
It's a MicroSD adapter, but in a sense, it could be considered a flash drive (same concept of R/W memory in a small form-factor).
http://www.kickstarter.com/projects/andyfei/mini-microsd-reader-for-android-smartphones-and-ta

lKBZl said:
Nice but too late, and if you buy those, you won't be able to use them on the pc unless you buy an adapter, so we are the same like now :crying: The best would be to make tablets with usb, but they would be thicker then.
Click to expand...
Click to collapse
Nah, these all have the standard USB plug as well, so they also work directly with PCs. No adapter required.

espionage724 said:
It's a MicroSD adapter, but in a sense, it could be considered a flash drive (same concept of R/W memory in a small form-factor).
http://www.kickstarter.com/projects/andyfei/mini-microsd-reader-for-android-smartphones-and-ta
Click to expand...
Click to collapse
I get that, but I think a flash drive can be made to be much smaller, which would be safer while sticking out of the tablet/phone.

Smallest OTG drive/card reader?

I'm looking for an OTG flash drive or microSD reader for my G2, but I would like it to be as small as possible. Can you recommend something?
LG G2

see this thread, we discussed sandisk dual usb otg drive and meenova
http://forum.xda-developers.com/lg-g2/accessories/dual-usb-drive-t2843382

Hey,
this guy is a great OTG-Plug..
Very fast R/W-Speeds & good looking
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Ebay: http://www.ebay.com/itm/221399955992
Ideal for Micro USB Sticks:
,
Or this Bud: http://www.ebay.com/itm/161385060372
Or this flat one: http://www.aliexpress.com/item/1pcs...er-w-3-5mm-Dustproof-Plug-for/1557534083.html
I use both Sticks, both support MicroSD-Cards up to 32GB

Dodge93 said:
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Click to collapse
i also have this one, but i don't use it for mobile phone because it needs additional OTG cable to connect it in the micro USB slot of the phone...
although, a really small usb stick with nice price for capacity...

60nine said:
i also have this one, but i don't use it for mobile phone because it needs additional OTG cable to connect it in the micro USB slot of the phone...
Click to expand...
Click to collapse
thats why you got the little android with microusb plug in his head and a ordinary USB 2.0A port in his..umm.. yeah... butt

Dodge93 said:
thats why you got the little android with microusb port in his head and a ordinary USB 2.0B plug in his..umm.. yeah... butt
Click to expand...
Click to collapse
that's why i have sandisk micro duo which has both in one neat device

What I'd love is something like that Kingston but with microUSB port.

costipl said:
What I'd love is something like that Kingston but with microUSB port.
Click to expand...
Click to collapse
see here
http://forum.xda-developers.com/lg-g2/accessories/dual-usb-drive-t2843382

60nine said:
see here
http://forum.xda-developers.com/lg-g2/accessories/dual-usb-drive-t2843382
Click to expand...
Click to collapse
Or one of these
http://www.mymemory.co.uk/OTG-Micro-USB/Integral/Integral-64GB-Micro-Fusion-USB-2.0-OTG-Flash-Drive
There are several brands where you plug the whole thing into a PC and the end into a phone, I have one works very well...

I just got one of these ordered. at Amazon Pretty low profile and decent looks with great price and phenomenal reviews. Should have it next week and will report back.
Silicon Power OTG

THIS would be awesome!

joooe said:
THIS would be awesome!
Click to expand...
Click to collapse
That's exactly what I'm hoping to find!

I have one question with otg cable i can connect internet pen ( service data 5gb per month) anyone no if exist any problem?

nunjabusiness said:
I just got one of these ordered. at Amazon Pretty low profile and decent looks with great price and phenomenal reviews. Should have it next week and will report back.
Silicon Power OTG
Click to expand...
Click to collapse
UPDATE: Got the device and it looks and works great! $8.50 delivered for a 16GB.

Does this thing even exist .. I would love to own it .. I need a small otg connected to my phone all the time because 16 gb isnt enough for me ..
Sent from my LG-D802

Take a look at my thread over here http://forum.xda-developers.com/lg-g2/accessories/lg-g2-micro-sd-development-t2919537
I'm in the middle of developing a super small micro SD reader for the LG G2 which can be keeped attached to your phone without feeling bulky