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Author Topic: Serenitiq 2 - Wacom Intuos 4 L + Rozsnyo DP2MBPR controller + LTN154YL01  (Read 85791 times)
bumhee34
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« Reply #90 on: October 08, 2014, 09:15:10 AM »

Oops, extras are for my friend. He also has same plan to make 15" retina tablet.
And, shipping fee may be huge, cause i'm living in Korea  Wink
But you can easily find the connectors in aliexpress or ebay(in my memory), and the board (forgot the keyword, but i saw them) in cheap price.
And you must have nice hands for soldering  Grin
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Aerendraca
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« Reply #91 on: October 08, 2014, 09:37:56 AM »

That's OK, I didn't expect you to have spares - why would you? Actually I think I could do some kind of simple reflow to solder the connector. If you happen to remember where you got the board from or know an alternative place please let me know - I can't find anywhere to get this type of breakout at the moment.
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bumhee34
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« Reply #92 on: October 08, 2014, 09:44:15 AM »

That's OK, I didn't expect you to have spares - why would you? Actually I think I could do some kind of simple reflow to solder the connector. If you happen to remember where you got the board from or know an alternative place please let me know - I can't find anywhere to get this type of breakout at the moment.
Here is an alternative : http://www.ebay.com/itm/0-4mm-1-0mm-pitch-FPC-connector-to-DIP-Max-46pin-PCB-test-board-/170907313874?pt=LH_DefaultDomain_0&hash=item27cadea6d2
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Aerendraca
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« Reply #93 on: October 08, 2014, 10:23:38 AM »

Thanks alot!
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Aerendraca
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« Reply #94 on: October 09, 2014, 12:06:10 PM »

@bumhee34 - I noticed on your drawing that you have put the connector as 204n4-030e-11, but it's actually 20474-030e-11. Took me a little while to work out why I couldn't find it anywhere. Also, the results are much cheaper if you search for the part rather than for "A1398 LVDS connector", try it yourself, it's like £8 cheaper!!

I've subsequently ordered 4 of these connectors, 2x 0.4mm to DIP adapters, come Sn63/Pb37 Solder paste & 40g flux, and a 1.5m premium flat scart cable.

Why the scart cable? I'm glad you asked. I spent a long time trying to find a shielded cable that has 30 cores (one for each of the 30 pins on the eDP connector), but the only ones I could find were super expensive so, because I'm cheap, I thought about technology that existed that was coming to it's end of life and is therefore no longer desired (hence cheaper), and I thought of TV scart cables. A decent scart cable typically has 20 wires and a common ground ( doubles as shielding), a premium scart cable has individual shields per wire and a further shield surrounding all of them, perfect! Since 20 wires are not enough, I will use two pieces to distribute the eDP signal..........Perhaps I could use the extra wires for USB? hmmm.

Anyway, the scart cable I have chosen is moulded into a lovely flat pvc casing - not sure if it's the blue one or the black one but either should look sleek as heck coming out of the back of the overlay. The wire is made by Ixos and is model XHT611-150.

Manufacturer site: http://www.ixoscables.com/cgi-bin/ixos-cables/XHT611-150.html

Detailed image of wire confiuration in Ixos XHT611 http://www.futureshop.co.uk/images/XHT611xs_upgrade.jpg
« Last Edit: October 09, 2014, 01:56:18 PM by Aerendraca » Logged
bumhee34
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« Reply #95 on: October 10, 2014, 02:33:54 AM »

Oh, sorry for my bad writing T^T

If u search in taobao.com with the keyword 20474-030e-11, you can buy it less than 1$ o_O. Anyway it is cheap.

And I want to let you know that my plan is slightly changed. The extension may not be done in the way I've explained.

To save the space, the connectors will be soldered into 0.4mm pitch FPC cable. Luckly, I found this kind of FPC cable, http://item.taobao.com/item.htm?spm=a1z09.2.9.24.6iSQ6R&id=37779275237&_u=a1uufgjff0a1.

Total pin number is 60 (30 and 30), so i can use 30 of them. And my friend told me that he can solder connectors directly on this FPC cable. Also, he warned me that it could be easily fell off.

Anyway, I can insert this extension tool easily in intuos5 w/o any problems in this way (I hope).

So, I've ordred and waiting for the delivery. It is coming from China, so maybe I will get it next week. If I succeed, then you can see the results in three weeks.
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bumhee34
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« Reply #96 on: October 10, 2014, 02:37:21 AM »

And, actually, I do not know whether we should use shielded cables. For many builds I tried, the cables have not affected to the jitter issue in my case.

Anyway, it must be better, but do not know how much will be better. Hope I could see your result soon! Smiley
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Aerendraca
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« Reply #97 on: October 10, 2014, 06:38:04 AM »

Soldering to fpc is really tricky, I've done it before but only on about 10 contacts. It's not just the scale you have to worry about, it's the heat transfer to the kapton material. Also, you friend must have nerves of steel, a steady hand, and plenty of patience, that's an awful lot of tiny soldering to undertake.

if you are looking just to extend the wire, could you not just find a long i-pex 20472-030T to 20472-030T cable? I'm sure I've seen sites that sell these. In my case i need rigidity which is why i went with scart cable.
« Last Edit: October 10, 2014, 06:39:49 AM by Aerendraca » Logged
Aerendraca
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« Reply #98 on: October 10, 2014, 07:53:04 AM »

Maybe this cable: http://www.cables-oem.com/html_products/I-PEX-20472-030T-11-LVDS-CABLES-25.html
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bumhee34
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« Reply #99 on: October 10, 2014, 08:01:20 AM »

Oh jejus, with that cable, we do not need a1398 eDP cable anymore!!! Why I coudn't think of this before! That is gorgeous. Need to find seller in Korea or China right now!
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bumhee34
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« Reply #100 on: October 10, 2014, 08:05:52 AM »

Maybe that cable is for 20474-030e-12 and 20474-030e-11? Need to search it. Thx man!

-Add-
Ooops... Nobody sells for small number of cables..
« Last Edit: October 10, 2014, 08:33:47 AM by bumhee34 » Logged
Aerendraca
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« Reply #101 on: October 10, 2014, 08:37:24 AM »

Actually the suffix of "-12" refers to whether the socket has a Boss.

- 11 (No Boss)
- 12 (Boss)

I think the boss is just something on the socket that helps the plug stay fastened. All image searches I have done don't show any difference at all, plus a lot of the pages I have been to say that the 20472-030t will mate with the 20474-030e-11 or similar which suggests to me it will work fine.

For info on the suffix see this image - http://www.tonylabs.com/wp-content/uploads/i-pex-20474-0x0E-1-specs-1024x542.jpg

Also, see page 12 of the Cabline series datasheet showing the plug and connector together, here: http://www.daiichi-seiko.co.jp/cms_pdf/series/CABLINE_series_packege_E.pdf

Someone must sell these things on a small scale. I'll keep hunting out of interest.

-------------------------------------------------
Edit:

The dictionary definition of 'Boss' (non business person) is "a raised ornamentation" or "stub". This makes me think that the boss is actually a means to secure the connector to the PCB and nothing to do with the mating of the 20472-030t plug at all.

Also, if you look closely at the datasheet (page12) as linked above, you can see two little extrusions at the bottom of the connector which I'm willing to be are the Bosses.
« Last Edit: October 10, 2014, 09:46:35 AM by Aerendraca » Logged
bumhee34
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« Reply #102 on: October 10, 2014, 09:09:05 AM »

Thx very much!

Now I am contacting to the seller in alibaba.com. The seller can provide a small number of cables, but would be expensive.

I am asking them to make a 20cm cable.

I will let you know the price after the seller tells me.
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bumhee34
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« Reply #103 on: October 10, 2014, 10:21:45 AM »

Wow... if I buy five, then it will cost more than 150 $ o_O...
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Aerendraca
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« Reply #104 on: October 10, 2014, 11:05:41 AM »

Ouch!!  Shocked That's very expensive. I'm sure that there must be another device which uses these connectors that has a longer cable. What about one of the other apple products?
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