[HACK] Hardware HDMI/MicroSD Hack? Unused Pins/Connectors - Nexus 7 General

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.
Click to expand...
Click to collapse
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.

Related

Samsung Galaxy Tab Camera Connection Kit

Does anyone of know of any progress updates on this adapter?
Code: ET-R100PBE
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wow...is it really on the market? but looking the connector head kinda rare to find with the camera connector slot?
This thing can only be found at expansys webpages. Not even Samsung has it. So I wount give 2 much 2 it. Greetings Ottschke
Sent from my GT-P1000 using XDA Premium App
Where I can find this item? I'm looking forward to buy it. Is there anyone who already has and working?
So what does this actually do?
What it does is allow you to put an SD card from your camera into one end and then connect the other end to the tab. This would allow you to move files back and forth, hence the name Camera Connection Kit.
BUT this product is vaporware because the tab is not a USB host. This thing will never exist and never did exist. It is something that the iPad has and perhaps a optimistic marketer either at Samsung or Expansys slapped a Samsung logo on a pic of the iPad dongle because they expected it to be released.
There are a few other solutions to getting pix from your camera to the tab, none are elegant and some are expensive.
1) Remove your MicroSD from your tab and insert it into a SD card adapter and then insert into your camera. This is cheap but is a pain and the microsd can get hosed if you do not carefully mount it and dismount it when reinserting or removing.
2) Root your tab, buy an Eye Fi X2 Pro card for your camera, install Android Tether for root users and use the card to wifi transfer to your tab, using Eye-Fi Server for Android OS or Fe-Fi or MoPhotos from the Android market
3) Root your phone, remove your microsd, use mobidapter (USB to microSD dongle) and then use root explorer to transfer pics to you internal SD card.
in other words, tab is not gadget to work with camera becaused of this connector issued
darn....... why does all this camera kits stuff have to be in SD Card Format???? My camera only supports CF cards..... and a lot of those mid to high end DSLR used CF.
response from expansys
Expansys inform me before 4 hours that the specific item has remove from the products list!!!!
What can i say?
$%&#@#$#$!!!
0300078 said:
darn....... why does all this camera kits stuff have to be in SD Card Format???? My camera only supports CF cards..... and a lot of those mid to high end DSLR used CF.
Click to expand...
Click to collapse
Honestly... you probably don't want to use your tablet for DSLR photos anyway.
Besides the fact that RAW images are large files (~20-30MB) and huge resolutions (18 Megapixel) that no tablet can adequately handle... there is no way to calibrate the screens or make or convert RAWs on a tablet.
I would use a point-and-shoot camera with a microSD card inside a SD adapter.
Tablets are supposed to be about putting small size and mobility foremost over wide functionality or productivity.
would the current usb kit for the 10.1 work on the p1000?
hxxp://samsung.mobilefulfilment.com.au/Products/ViewProduct.aspx?ProductVariantId=9B06D3B5B8BC4F919A51
No. Gingerbread doesn't have usb host mode.
GldRush98 said:
No. Gingerbread doesn't have usb host mode.
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How does the viewsonic gtab have usb host on 2.2¿
Sent from my SGH-T959 using Tapatalk
Because Viewsonic customized the rom and added it in.
so it becomes a software problem?
i thought there are hacks to enable it on 2.2/2.3 too?
it was possible to inject 2.1 with host mode, many cheap tablets did it. However the p1000 is missing the host protocol on-chip so cannot do the required functions like power regulations etc. So tis more of a no hardware than a software problem.
deanwray said:
it was possible to inject 2.1 with host mode, many cheap tablets did it. However the p1000 is missing the host protocol on-chip so cannot do the required functions like power regulations etc. So tis more of a no hardware than a software problem.
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Click to collapse
Wrong and not true...
ziggary said:
Wrong and not true...
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Click to collapse
Really? What part and how so?
ziggary said:
Wrong and not true...
Click to expand...
Click to collapse
my thoughts are the usb chip doesn't have ability to control unit to socket power, hence why anything that requires a fair number of volts wont work (memcard reader, mouse, thumbdrive etc)
And I have a few 2.1 tablets with USB host, and a 2.2 tablet with usb host (Scroll and some other weird make).
So not sure what is not correct here? If you have info that rebuts this please share?
ziggary said:
Wrong and not true...
Click to expand...
Click to collapse
I would very much like to be wrong on this, but all of my development and rough research along with the fact there are no volt dependent accessories for the tab7 lead me to conclude that it doesn't do it!
The reason I want to be wrong is that I have a few tabs here and want them to be the product of choice for a project I'm doing, the limiting factor is usb host, I would really want it for 2 hardware accessories, but I found only evidence that the chip that controls the in-socket and the onboard controller do not have ability to play with voltage to the socket thus can never accept any accessory that requires above the base voltage of the board.
Again I REALLY WANT TO BE WRONG here
Let me know if you have any info to say thats wrong please please please !

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.
Click to expand...
Click to collapse
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...
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If you do sell them, pls do not put us in the backorder situation again
Seriously, great job!

Aftermarket Dock (using POGO). Would you Kickstart?

So I am usually a lurker on XDA, but I thought I'd get the community's thoughts. I'm a fellow Nexus 7 owner and I want a dock that uses the pogo pins. I'm tired of waiting for ASUS and I also happen to be a mechanical engineer that works in the consumer electronics industry. So, I've mocked up my own design. It's similar to the ASUS design and will have USB charging and audio out. The only way I could bring it to market is Kickstarter.
Before I go through that much effort (Kickstarter has revised its approval process) I want to gauge demand. The sale price would be $30. I've made a poll below to streamline things, but feel free to add comments. Rendered concept below. I am also considering adding stereo RCA outputs as well. Would you want that?
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I am also considering adding stereo RCA outputs as well. Would you want that?
|UPDATE 1|
Thanks everyone for the feedback! I'm still in the early design phase so feedback helps. To address the request for speakers: at this point it's not something I'm looking to add. It adds cost, development time and complexity. Depending on how well things go if I put it on Kickstarter, a speaker option may be considered. Also, now that I've seen there is some interest, I refined the design slightly to slim it up. See below:
Would adding some sort of HDMI out be too complicated or difficult?
adamhlj said:
Would adding some sort of HDMI out be too complicated or difficult?
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Click to collapse
Unfortunately, the Nexus 7 doesn't have any method of outputting an HDMI signal. In fact, the pogo pins do not allow for data, just audio and charging.
Hi!
Is it easy to put a charging light on the front?
I would be interested!
Ofiaich
fierrogt said:
Unfortunately, the Nexus 7 doesn't have any method of outputting an HDMI signal. In fact, the pogo pins do not allow for data, just audio and charging.
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Click to collapse
Oh ok. I don't really know much about electronics. I barely passed my circuits class in college, lol.
At any rate, I have never used kickstarter, so as long as I can pledge without using paypal (we had a falling out back in 2005), I would be happy to help out with this!
Add a holo blue charging light and I'm in for one..
Sent from my Galaxy Nexus using Tapatalk 2
I would kickstart for sure, i'd love to get my hands on one.
Nice idea, keep us updated :good:
I was close to support it but since Asus is finaly realeasing their dock, i'm unsure there is still a large market for it
jc
Sent from my Nexus 7 using xda app-developers app
3d_jc said:
I was close to support it but since Asus is finaly realeasing their dock, i'm unsure there is still a large market for it
jc
Sent from my Nexus 7 using xda app-developers app
Click to expand...
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Source???? It's WAY too late for the Xmas market. It should have been onsales 6 weeks ago to catch that....
I would kickstart it.
If you could figure out a way to make it with external speakers instead of an audio jack or (maybe I am getting ambitious here) if possible external speakers AND audio jack and I would pay the 30 dollars
jonnyg1097 said:
If you could figure out a way to make it with external speakers instead of an audio jack or (maybe I am getting ambitious here) if possible external speakers AND audio jack and I would pay the 30 dollars
Click to expand...
Click to collapse
I'd personally rather not pay to have a below-par amplifier included.
well, if you WANT to people buy your dock, putt 2 USB's. i would buy a dock, but a dock like this needs a USB ports. so everybody could use mouses, keyboards or harddrives.
robox45 said:
well, if you WANT to people buy your dock, putt 2 USB's. i would buy a dock, but a dock like this needs a USB ports. so everybody could use mouses, keyboards or harddrives.
Click to expand...
Click to collapse
I would love to, but the pogo pins do not support USB OTG (needed for keyboards, usb drives, etc.) That would require connecting to the micro-USB port. Also, as of now, charging while using OTG is almost non-functional. It may be possible with the Nexus 10 (6 pin pogo) but not the 7.
I'd buy it if available on Europe
Enviado desde mi MB526 usando Tapatalk 2
fierrogt said:
I would love to, but the pogo pins do not support USB OTG (needed for keyboards, usb drives, etc.) That would require connecting to the micro-USB port. Also, as of now, charging while using OTG is almost non-functional. It may be possible with the Nexus 10 (6 pin pogo) but not the 7.
Click to expand...
Click to collapse
oh sad
I'm in for one
Sent from my Nexus 7 using xda premium
Make it black though.
I'm in make like the Motorola Xoom with built in speakers as an option
Sent from my Nexus 7 using xda app-developers app
ddlooping said:
I'd personally rather not pay to have a below-par amplifier included.
Click to expand...
Click to collapse
Fine then, maybe I will make one myself!.....maybe.
I just can't think of a good reliable material that doesn't require big machining tools to work with it.

Project FrankenNexus

Hey guys,
So i got bored and decided I wanted to try expanding the storage capabilities of my N7. Using StickMount Pro, an OTG cable, a Western Digital 500GB HDD and some double sided tape, I mounted the HDD to a back case and viola... I now have a 516GB N7!!! In the near future I will attempt to add a 4-port USB hub... stay tuned!
UPDATE:
Well this started as a bored guy having fun and has evolved into an actual project.
I've decided to scale back somewhat in an attempt to be more power friendly.
On this attempt I scrapped the HDD (for obvious reasons). I modified the OTG cable and added a 4 port USB hub with a dongle for my mouse. The remaining 3 USB ports will be used for 2x mini USB card readers w/ 32GB micro SD cards and another dongle for my wireless keyboard.
BTW the flip case makes a great mouse pad.
UPDATE 12/29:
Now that some of my X-Mas goodies have arrived I've added 2x mini USB readers and 2x SanDisk Mobile Ultra 32GB Class 10 micro SD cards.
Stay tuned for more awesomeness as the rest of my goodies have yet to arrive...
UPDATE: 01/10/13:
This project has morphed a few times now but I finally have a configuration that works for me. I wanted to make this a project that anyone can do without all the soldering and modding that I see in other threads around the web. I originally wanted to make a case with the mods built in to it, but after some serious consideration, I decided that I wanted a much easier project ( I am quite lazy). The only real modification I made was to the USB OTG cable, but is not necessary to make this work.
So here's some pics:
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Final Set-up:
4 Port USB hub
2x SanDisk Mobile Ultra 32GB Class 10 micro sd cards
2x SanDisk micro sd card readers
Wireless Mouse w/dongle
Wireless SixAxis game controller w/dongle
Bluetooth Keyboard / Case - yes the keyboard is actually a case as well
Auvio Expanding Bluetooth Speaker
kudos for trying to work on the storage problem..but i wouldnt really call duct taping a harddrive to a case a "mod"
velcro woulda been a smarter idea as thats what i plan on doing using otg cable and usb-to-mini adapter so no extra cable
Measure battery life in minutes not hours kudos for trying m8.
Troute said:
Measure battery life in minutes not hours kudos for trying m8.
Click to expand...
Click to collapse
As you can see I have too much time on my hands and don't take anything seriously. This was just a fun way to waste some time. As for battery life... I get about 2 hours if I'm lucky lol.
SSDs are getting cheaper and use less power, that might be a route to go for the next mod
loooooooooool
Off topic, but what is that shell case you're using, OP?
Though implementation was a little funny, this is an excellent idea!
SSD and some more creative work with cable shortening/plug modding would make a pretty sweet beast.
Thanks for sharing!
Not really a mod but I do like the concept...Imagine having a really thin SSD drive strapped to the back of your n7
Doesn't that affect portability? I've contemplated using a wi-drive, but wondered how much constant activity would deplete the battery
Why not a usb stick instead of ssd? Can pick up a 64gb one for less than £23..... Take the externals apart and make your own case for it?
Case
Hey,
If you don't mind me asking, what case is that?
Thanks, Chris.
formerglory said:
Off topic, but what is that shell case you're using, OP?
Click to expand...
Click to collapse
here's the link to the one I purchased: http://www.ebay.com/itm/380474235920?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
not sure if it's still available but the name brand is Fosman.
TheAtheistReverend said:
Though implementation was a little funny, this is an excellent idea!
SSD and some more creative work with cable shortening/plug modding would make a pretty sweet beast.
Thanks for sharing!
Click to expand...
Click to collapse
I'm currently working on a few different versions. The one pictured, one using a SSD (which is much more portable and uses way less battery) and one using a 4 port USB hub and 4 x 128 GB Flash Drives. More pictures to come upon successful completion.
twe69 said:
Why not a usb stick instead of ssd? Can pick up a 64gb one for less than £23..... Take the externals apart and make your own case for it?
Click to expand...
Click to collapse
Idea implemented! Coming soon... stay tuned.
morborules said:
Doesn't that affect portability? I've contemplated using a wi-drive, but wondered how much constant activity would deplete the battery
Click to expand...
Click to collapse
Don't waste your time using a HDD as battery life suffers greatly but my next attempts are going to be much improved and hilarious too
this is too funny
ron427 said:
I'm currently working on a few different versions. The one pictured, one using a SSD (which is much more portable and uses way less battery) and one using a 4 port USB hub and 4 x 128 GB Flash Drives. More pictures to come upon successful completion.
Click to expand...
Click to collapse
i can't wait to see pics!
what about making a case for the hdd that it sits in and clips to the edges of the nexus 7 like a car mount but a hdd to the nexus type mount

homemade reverse side OTG adapter.

I often use on the go adapter for usb sticks and joysticks. The problem I find is that the micro adapter justs acts as a nice lever that is going to kill my socket. So I decided to adress the problem by spreading the load while at the same time tucking it out the way. Funny that when I came into the forum there seems to be threads about making some tiny little usb/sdcard adapters, obviously the smaller the better.
My solution is not small but when I fall asleep watching a movie and me nexus ends up on the floor hopefully nothing will snap!
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It is comfortable and makes me nexus much more easy to handle while using OTG.
what's the verdict?
Update...
Power adapter addon.
Was going to make another adapter that included a socket for charging. But infact the original adapter already allows for charging using timurs kernel. But of course I could only charge or use otg but not both. I made this addon that attaches to the original and allows power and otg.
It is quite bulky! I will probably make an all in one at some point.
As for a tutorial... well wiring diagrams for making otg cable can be found all over the web. All I did was use the stripped down to the bare bones usb plugs and sockets, covered nexus in cling film, then used some milliput (can be bought in hardware shops, like plasticine bet sets hard) to fashion the adapter. Bobs your uncle.
Looks good, and does solve that issue.
Another good idea would be a non-OTG version for charging while in use.
Either way, very nice... :thumbup:
Thanks danvee, i had been thinking of one with charging capability as i use timurs otg kernel which allows charging and otg at the same time. I had not however thought of making one that simply charged though, great idea thanks.
Sent from my Nexus 7 using Tapatalk 2
Keep us posted... :thumbup:
Neat, well engineered solution.
Awesome!
I'm definitely interested in a tutorial.
Updated first post.
Sent from my GT-I9100 using Tapatalk 2
Where to buy?
I am Weasl
––––––––––––
and you've been PAC'd by a Note 2
All information is in the OP.
joesnose said:
I often use on the go adapter for usb sticks and joysticks. The problem I find is that the micro adapter justs acts as a nice lever that is going to kill my socket. So I decided to adress the problem by spreading the load while at the same time tucking it out the way. Funny that when I came into the forum there seems to be threads about making some tiny little usb/sdcard adapters, obviously the smaller the better.
My solution is not small but when I fall asleep watching a movie and me nexus ends up on the floor hopefully nothing will snap!
It is comfortable and makes me nexus much more easy to handle while using OTG.
what's the verdict?
Update...
Power adapter addon.
Was going to make another adapter that included a socket for charging. But infact the original adapter already allows for charging using timurs kernel. But of course I could only charge or use otg but not both. I made this addon that attaches to the original and allows power and otg.
It is quite bulky! I will probably make an all in one at some point.
As for a tutorial... well wiring diagrams for making otg cable can be found all over the web. All I did was use the stripped down to the bare bones usb plugs and sockets, covered nexus in cling film, then used some milliput (can be bought in hardware shops, like plasticine bet sets hard) to fashion the adapter. Bobs your uncle.
Click to expand...
Click to collapse
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original. cool. I like.
Pretty cool that you've designed it to follow the curve of the tablet. I like it
Very nice. I have wondered why this doesn't exist for retail purchase...

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