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HDMI on Arnova 10 G2
Topic Rating: 0Topic Rating: 0Topic Rating: 0Topic Rating: 0Topic Rating: 0 Topic Rating: 0 (0 votes) 
2011/12/08
20:06
p1ceus

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Hello guys,

I was just curious if the "dumb" HDMI hole between DC jack and miniUSB is really just an plastic piece or there is something more on PCB. So I disassemble my Arnova 10 G2 8GB and found out…that there are already prepared holes and pins for miniHDMI connector!

 

According to this pinout, I tried to measure at least voltage and voila, it is under power ;)

miniHDMI connector which should match the holes and pins is here.

So do you guys think after some soldering work, it will actually recognize connected TV and send the signal thru it? I'm hoping to it because there are some HDMI related files in system too:

systemetcpermissionsandroid.rockchip.hdmi.xml
systemframeworkandroid.rockchip.hdmi.jar
systemframeworkandroid.rockchip.hdmi.odex
systemlibhwhdmi.rk28board.so
systemliblibrockchip_hdmi_jni.so

 

Another picture of the board:

Last edited by p1ceus on 2011/12/08 - 20:09

2011/12/08
20:54
admin

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Thanks a lot for that, I have just made an article on the Blog.

I'll get back on that topic later, see if I can help with your discovery…

 

That's really a great finding, you really deserve a "Contributor" member rank on the forum Wink

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2011/12/08
21:34
p1ceus

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I'm glad I could help ;)

I just ordered one conector from the shop nearby, hope to get it tommorow, if not then next week.

(connector needs to be marked as "SMD" or "SMT" – means it will fit the small pins on PCB)

Here is the link.

 

btw, thanks for the blog entry :)

2011/12/08
23:08
damo

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Your a brave man Laugh

 

Seems stupid that a huge selling point on a device like HDMI connectivity in this day and age would be missed out by the sake of installing a cheap interface connector.

 

I know that the Archos 101 has the mini hdmi interface and this tablet has the same chassis, processor etc as the Arnova 10g2. Maybe as Archos make the Arnova 10G2 they want to keep hdmi connectivity as a selling point that is more attractive from there point of view on the Archos range?

http://www.archos.com/products/ta/archos_101it/specs.html?country=gb&lang=en

 

Anyway really hope you can get this working with some tweaks to the custom firmware to enable the inteface, you may have a que of people with there g2 tablets knocking on you doorWink

Last edited by damo on 2011/12/08 - 23:09

2011/12/09
09:55
admin

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p1ceus said:

I'm glad I could help ;)

I just ordered one conector from the shop nearby, hope to get it tommorow, if not then next week.

(connector needs to be marked as "SMD" or "SMT" – means it will fit the small pins on PCB)

Here is the link.

 

btw, thanks for the blog entry :)

That looks good, hopefully the connector mounting will match the PCB.

SMD soldering is tough, hope it will work for you.

 

For the record, I actually noticed the same thing about the HDMI connector on my Arnova 10 (first gen, RK2818 based) where I applied some surgery to solder a new power connector (I'll post some pictures later), the default one being dead.

At the time, I had no intuition about the HDMI circuit as you did, I just tought it was missing circuitry Confused 

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2011/12/09
10:10
elevener

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Well done P1ceus!

 

You know what Makezine´s motto is: If you can't open it, you don't own it!

I was hoping all along that people would starting hacking the 10G2, since it is such a inexpensive tablet with so many options. I wonder what else we can do with it. Hopefully somebody will get the webcam to function properly and find a safe way to overclock the processor.

 

I hope you will keep us posted on the HDMI-tweak and maybe you could post a tutorial if it works?

 

Good luck and thanks again!

 

11

2011/12/09
10:32
admin

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damo said:

Seems stupid that a huge selling point on a device like HDMI connectivity in this day and age would be missed out by the sake of installing a cheap interface connector.

 

I know that the Archos 101 has the mini hdmi interface and this tablet has the same chassis, processor etc as the Arnova 10g2. Maybe as Archos make the Arnova 10G2 they want to keep hdmi connectivity as a selling point that is more attractive from there point of view on the Archos range?

http://www.archos.com/products/ta/archos_101it/specs.html?country=gb&lang=en

 

I definitely agree with you. I find that Archos for their Arnova brand seem to have a pretty mean marketing strategy releasing multiple products at a very fast pace, some being almost duplicates. Not only this confuses the customer but it does not help product maintenance and improvement.

I believe the HDMI connector was not mounted on the G2 just to make them lower end compared to Archos models or to make customers buy the new update that will later come with HDMI. This isn't really fair.

Regarding the Archos 101 IT, it shares a big part of the chassis with the Arnova 10 (G1 and G2) but there are still some slight difference on the back of the device for instance, with a better plastic/metal mix moulding and a kickstand on the Archos 101. CPU is a TI OMAP 3 on the A101IT, not Rockchip.

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2011/12/10
12:43
p1ceus

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OK guys, sorry for late answer I was kinda bussy yesterday (work, beers,… :)) so I don't have time to go to the shop for the connector yet. Will go there on monday-tuesday and let you know here what I found after some (I hope successfull) soldering work :)

2011/12/10
19:51
admin

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Thanks for the update and good luck for the soldering work ;)

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2011/12/10
22:12
finless

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Just getting the connector wont do it!  You will need all those other components behind the connector.  You can see in your picture all the pads for resisitors, diodes, and behind that transistors.  All of the solder pads are there but your picture shows the components are not soldered there.  It wont work without those opther components and who knows what the values of those parts will be?  Maybe someone with a Arnova that has an HDMI port can look at them and make a list.

 

Bob

2011/12/11
15:53
p1ceus

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Hi Bob,

you are right, that was second thing I noticed on the PCB that these components are missing :/ But I will try to solder the connector anyway to see what will happen (whole PCB will burn into ashes) :)

But you are right for sure that just solder the connector will propably not work…

I found dissasembled 101 here but its not clear from the pictures if there is any resistor, diodes, etc in front of HDMI connector.

 

EDIT: ok, I manage to found some detailed pictures of disassembled Archos 70 IT on this chinese forum.

Since I waited like 45 minutes to whole page finished with loading, here are some direct links to pictures showing HDMI connector on Archos 70 IT:

 

PICTURES REMOVED

 

Not sure if this will be to any use (different board, chipset, etc…), but maybe somebody with more electronical skills then me will recognize something from these pictures.

 

EDIT2: damn, they not allowing direct linking to the pictures :D and I closed the tab already :/

Here are just two pictures I saved… If anyone alse is interested, please feel free to wait one hour for all images to DL :( sorry

Last edited by p1ceus on 2011/12/11 - 16:52

The following users say thank you to p1ceus for this useful post:

Blackyx007
2011/12/11
18:11
finless

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The other picture shows some kind of processor right behind the port.  Makes me wonder if on the G2 that processor is somewhere else on the board and is also not there let alone the support components that are missing.  Your pictures of the G2 don't show enough of the board to see if there is a missing processor location as well.

 

Good luck on soldering on the port.  Dont bur it up!  Use a good small tipped low watt soldering iron and take your time.

 

Bob

2011/12/19
19:18
josbos

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Any update on this subject? Did it burn to ashes?

2011/12/19
20:23
p1ceus

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Not yet, I will get connector tommorow and before I do some soldering work, I will disassemble it more and post more pictures, so we can take a look if at least controller for HDMI is on PCB :)

2012/01/09
00:49
s1t

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Hi ! Do you think there is a possibility to use an usb hdmi adapter on this arnova ? Somethink like this : http://www.amazon.com/gp/aw/d/B005NTHXYY?qid=1326066626&sr=8-4
I'm thinkig it because i saw that the arnova 10 g2 device seem to already have software support for hdmi output.

Thanks

Last edited by s1t on 2012/01/09 - 01:54

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