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Author Topic: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01  (Read 86562 times)
bumhee34
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« Reply #105 on: October 10, 2014, 11:09:53 AM »

Need to search further. If there is longer matching cable, let me know Smiley

But I found big problems, we do not know the pinmap. I do not know whether the cable is one-to-one mapping between two male connectors or reverse mapping..

I need to uncover the eDP cable first.
« Last Edit: October 10, 2014, 11:17:30 AM by bumhee34 » Logged
Aerendraca
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« Reply #106 on: October 10, 2014, 11:20:12 AM »

Or use a multimeter to check for consistency. I've been meaning to do this actually. I'm at work at the moment but I might try this evening if I get a chance.
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bumhee34
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« Reply #107 on: October 10, 2014, 11:32:22 AM »

We can ask dp2mbpr team. I will send them email with my poor English.
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Aerendraca
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« Reply #108 on: October 10, 2014, 03:05:24 PM »

That's a good idea. Your English is pretty damn outstanding by the way.
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bumhee34
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« Reply #109 on: October 11, 2014, 02:31:34 AM »

No reply yet. The homepage is under construction. Maybe they are busy with MIPI display board for small FHD panels.

The chinese seller, he says that they can duplicate the eDP cable after they get the original cable.
Of course with longer length (around 20cm)..
Still negotiating price with the seller. If many guys are making this kind of retina builds, i can sell after i buy a bunch of them.
But as you know, nobody is doing retina build in the world. As far as i know, only you and me are working on this project (of course as a hobby? haha).
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bumhee34
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« Reply #110 on: October 11, 2014, 04:57:26 AM »

Finally, I've bought two extension cables from here : http://www.alibaba.com/product-detail/IPEX-20472-030T-HIROSE-DF19-30S_60046304780.html
The total cost is 144$, but I hope I should be worthy.
That is ok if i "inception" on myself that i bought the intuos 5 in very cheap price (300$) Smiley

By the way, the officer is really kind, and did her best job in negotiating with her boss.
Still expensive, but that is the only safe way to extend the cable.
It will take around two weeks.
If you need one spare, i will sell it to you Smiley
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Aerendraca
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« Reply #111 on: October 11, 2014, 08:01:52 AM »

I'm excited for you, it is a whole bunch easier than making adapters etc. Thank you for offering to sell me one, I might take you up on that depending on how successful my attempt at cable extending goes.

By the way I got the scart cable, I've cut it up to check inside, and I can report that there are 13 individual cables inside, 12 of which carry 2 wires per cable, and number 13 is single core - 25 wires over one cable. Actually, 25 might be enough if the pinout at mikesmods (http://mikesmods.com/mm-wp/?p=384) is to be believed, as 7 of the pins are used for ground.
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Aerendraca
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« Reply #112 on: October 13, 2014, 01:29:25 PM »

The scart cable cut open:


* Scart_01.jpg (102.39 KB. 1024x768 - viewed 449 times.)



* Scart_02.jpg (113.68 KB. 1024x768 - viewed 497 times.)


According to the documentation that came with the cable and the Ixos website, the cores are supposed to be made up of a solid copper core with a PVC casing wrapped in a aluminium/mylar shield surrounded by braided wire and a final layer of PVC. In reality there is no mylar shield and the outer wire doesn't appear to be braided - more running parallel with the core. I don't think it will make too much of a difference for my application but it's a bit of a shame that the company decided to cut corners; Presumably the company thought that they could use cheaper wires and not worry about being found out as the cables are so expensive and so completely enclosed that nobody would ever see inside, well Ixos, I'm on to you!! Smiley

« Last Edit: October 13, 2014, 10:18:27 PM by Aerendraca » Logged
Aerendraca
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« Reply #113 on: October 22, 2014, 02:56:37 PM »

Well I think I got a bit excited about extending the edp cable to the MBPR screen, what with buying scart cable and pitch adapters (both arrived now by the way), and in my haste I sort of assumed I could just do it based on my trust in my own abilities. I think I might have gotten a bit cocky with things though and today I destroyed the edp cable while trying to remove the hinge that comes attached to it - I'll post some pics later on.

It's not a major thing really, I can get another, but they are expensive for what they are and I did have a perfectly good one until about 10 minutes ago. Ah well, I suppose it's good to be brought back to reality every now and again.

On the flip side, it has given me a chance to strip off all the tape to see all the wires and where they connect; I can confirm that the MBPR eDP cable is wired one to one! So there's that.

@Bumhee34 - Did you get your extended eDP cable yet?
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bumhee34
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« Reply #114 on: October 23, 2014, 01:53:49 AM »

Not yet, the supplier told me that they finish their work at the end of this week (but not sure).

Sorry to hear that you broke down the eDP cable.

I thought that it looked difficult to remove the hinge. Actually, that's why I haven't remove hinge yet. The original plan was that it would be removed by dremel.

If you have chinese friends or frineds in china, you can buy eDP cable in very cheap price.

I guarantee that all ebay sellers buy the cables from china, and sell them at more than double price.

Check this link. It is less than 5 $. http://item.taobao.com/item.htm?spm=a1z09.2.9.77.QiGxgj&id=36591240246&_u=n1uufgjf0c28
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Aerendraca
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« Reply #115 on: November 11, 2014, 01:31:02 PM »

As promised (albeit a bit late) the photos of the damage I did to my eDP cable, Doh!!

Successful removal of part of the metal hinge  Grin !!

* WP_20141022_003.jpg (128.67 KB. 979x734 - viewed 330 times.)


Holding the remainder of the hinge in a vice and gently filing down the metal - All going well so far!!

* WP_20141022_013.jpg (99.87 KB. 979x734 - viewed 490 times.)


Doh!!!! To much pressure at the wrong moment and the file went straight through the tiny wires breaking about 6 of them and damaging a few others.

* WP_20141022_017.jpg (105.9 KB. 979x734 - viewed 379 times.)


For anyone considering doing this, I believe it could work well if you use a small file and take your time, but I would warn that you will need a load of patience if you are going to be successful.

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Aerendraca
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« Reply #116 on: November 11, 2014, 02:17:12 PM »

On the flip side of the above disaster it pressed me to really look into making a cable to replace this broken OEM eDP cable, and after much searching I discovered that the I-Pex 'PLUG' connector actually used by Apple in the MBPR is actually part of the I-Pex CablineCA series and is the 20524-130t (although you may often see these incorrectly sold as 20524-030t); Where 20524 is the model, the 1 (of the 130t) tells us that the plug has less than 50pins (if it was zero it would have 50), the 30t (of 130t) tells us that the plug has 30pins and that the part will be supplied in a tray.

The correct 'SOCKET' connector is therefore the I-Pex CablineCA series 20525-030E-02; where 20525 is the model, the 030E tells us that the socket has 30pins and is supplied as a part in emboss tape (whatever emboss tape should be), and the 02 tells us that the socket does not have a boss - two little dimples on the bottom side that sit in recesses of the PCB.

Searching for these parts as "Socket 20524 30pin", and "Plug 20525-030E" should bring up many more hits for parts than the previously thought parts 20474-030e-11(socket) and 20472-030T(plug). Though these parts are not members of the CablineCA series they are pretty much compatible. It should be noted that the 20524-130t plug is a very tiny bit tight inside the 20474-030e-11 socket, and I should also note that I haven't tried the 20472-030T plug in the 20525-030E-02 socket but I can't see much reason why this shouldn't work too.

So, anyway, after finding all this out I found a seller on aliexpress that can supply a long cable with the 20524-030t plug to a 30pin IDC connector of which I have purchased 2. Here's the link: http://www.aliexpress.com/store/product/Laptop-LCD-screen-modificat-to-LED-dedicated-an-LVDS-panel-line-20524-30pin-0-4mm-to/420320_1895438988.html

I hope to either join the IDC cables with header pins or cut the wires back and solder each wire one-to-one to create a new longer eDP cable. I ordered these wire 2 weeks ago so hopefully these should be in any day now. As always I'll let you know my progress.

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bumhee34
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« Reply #117 on: November 12, 2014, 03:29:25 AM »

If the new idea is ok to have long eDP cable, that will be great achievement.

I want to see your result soon!
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Aerendraca
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« Reply #118 on: November 12, 2014, 10:34:18 AM »

I hope it will work as I haven't left much scope for an alternative solution without spending shed loads of money. How are you enjoying you Retina build so far? Is there anything that you might have done differently if you started again?
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Aerendraca
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« Reply #119 on: November 12, 2014, 12:56:11 PM »

So here's a little bit more progress to report on how things are going with the contoured case. The magnets are securely embedded into the plywood and the holes have been filled! Further progress on the case is on hold until I know if it my method of extending the eDP cable works since this will alter where I can put the DP to eDP board; I don't want to start cutting holes and veneering until I know exactly where everything will sit.

Some pictures:

The magnetic shield pieces made from layers of Steel and Mumetal.

* WP_20141103_002a.jpg (104.14 KB. 960x720 - viewed 396 times.)


You can see here the magnet in the recess of the plywood, to the right of that is a plastic spacer (came with the magnets), and far right is the shield piece.

* WP_20141103_005.jpg (101.4 KB. 960x720 - viewed 348 times.)


The plastic spacer rests on top of the magnet.

* WP_20141103_008.jpg (107.42 KB. 960x720 - viewed 339 times.)


Then the shield piece sits on that.

* WP_20141103_007.jpg (103.87 KB. 960x720 - viewed 358 times.)


Slap loads of glue-sawdust mix in the hole pressing it in to all of the small gaps and making sure that there is minimal space with no glue.

* WP_20141103_013.jpg (61.68 KB. 979x734 - viewed 347 times.)

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