[GTALUG] FPD-Link adapter kits -Success

[Russell Reiter]

Top posting again.
It all works. The recycled laptop screen is connected to the Pi through the
M.NT68676.2A display adapter.

The provisional instructions said to make sure the ground on the LVDS cable
was connected to the adapter correctly or damage to the screen would
result. The original Toshiba cable was tabbed on top so it could only
connect in the correct orientation. In fact the pin offset on the
connection ensures that the cable only fits one way, if gentle pressure is
used.

Other than that, easy as Pi, although xrandr can't report the correct gamma
size of this adapter. The OSD works fine and so I'm happy enough. Now to
check a the old screens, hopefully there a few LG in the lot  and close
enough to this modle to be able to use this cable.

Russell
Sent from mobile.
>
>
> On Oct 4, 2016 3:54 PM, "Russell Reiter" <rreiter91 at gmail.com> wrote:
>>
>> On Aug 24, 2016 10:46 AM, "Russell Reiter" <rreiter91 at gmail.com> wrote:
>> >
>> > On Aug 23, 2016 10:52 AM, "D. Hugh Redelmeier via talk" <
talk at gtalug.org> wrote:
>> > >
>> > > | From: Russell Reiter via talk <talk at gtalug.org>
>> > >
>> > > | Has anyone tried out the LCD adapter kits like this one on ebay.
>> <snip previous>
>>
>> I went with this product as it has a number of signal inputs. Also
available on the net is a usb EPROM flash tool, but I'm hoping to
override/modify EDID data in X in order to test several closely related
LCDs with the same cable.
>>
>> M.NT68676.2A(HDMI+DVI+VGA+Audio) LCD/LED Screen Controller Board Diy
Monitor Kit
>>
>> The cost was $61, and some change. It took about six weeks to ship. I
got the full kit with power adapter rather than trying to recycle the PS
and backlight inverter from the tickle trunk.
>>
>> Time to dig out the multimeter.
>>
>> The general instructions are to power test the inverter first, then test
that the cable ground from screen to adapter is correct.
>>
>> Here's a shot of the package contents as delivered to my standard
apartment sized mailbox.
>>
>> Very nice braid on the FPDL cable, I couldn't do that without a lot of
practice. There is no spec sheet with the package so I'm going to turn to
the net to figure out the EDID pairs.
>>
>> Success or failure some time soon, but It wouldn't be the the first time
I toasted my pet project.
>>
>> Russell
>> Sent from mobile.
>>
>>
>> On Aug 24, 2016 10:46 AM, "Russell Reiter" <rreiter91 at gmail.com> wrote:
>>>
>>> On Aug 23, 2016 10:52 AM, "D. Hugh Redelmeier via talk" <talk at gtalug.org>
wrote:
>>> >
>>> > | From: Russell Reiter via talk <talk at gtalug.org>
>>> >
>>> > | Has anyone tried out the LCD adapter kits like this one on ebay.
>>> > |
>>> > | http://m.ebay.com/itm/121124750917?_mwBanner=1
>>> >
>>> > Not me.  But thanks for posting this.  I'm mildly interested because
of
>>> > two projects that I never get around to.
>>>
>>> Here's a slightly cheaper one with VGA input only. This place drop
ships from Flushing NY, although they say add 30 days for international
delivery, most of them sellers I've viewed say that somewhere.
>>>
>>> These pre assembled device matched units all seem to come from the same
manufacturing campus in China.
>>>
>>>
http://m.ebay.com/itm/RTD2270-Universal-LCD-Controller-Board-Kit-VGA-to-LVDS-Signal-For-DIY-Monitor-/181437914509?hash=item2a3e8add8d%3Ag%3ABAwAAOSwGotWrFPZ&_trkparms=pageci%253A9920f25e-6a06-11e6-ae8c-74dbd1805b52%257Cparentrq%253Abcf0fd161560a2a486bce02efffd24dc%257Ciid%253A10
>>>
>>> I'm currently thinking of this one.
>>>
>>>
http://www.chalk-elec.com/?page_id=1280#!/HDMI-to-LVDS-converter/p/14647633/category=3094859
>>>
>>> You have to make/repurpose your own LVDS cable. However, there is a ink
to step by step instructions and a they provide their own utility for
loading EDID. This would be good for me considering where I'm starting
from. However, in my case I may be wrong in my assumption these Toshiba's
are all using LG.
>>>
>>> There is also this;  as well as the native Linux EDID tools you can use
to tinker Xorg.
>>>
>>>
http://developer.amd.com/tools-and-sdks/graphics-development/amd-edid-utility/
>>>
>>> From what I have read so far, it is possible that if any of the
adapters sold now is hooked up correctly ie. voltages and pin assignments
are correct, you will get some sort of output.
>>>
>>> This guy has blogged his RE adventure.
>>>
>>> https://hackaday.io/project/4177/logs
>>>
>>> <snip>
>>> >
>>> > (Isn't it sad that the quality and resolution of the 15.6" notebook
>>> > ($400) is so much less that of the 7" tablet ($40).)
>>>
>>> I see this as a transport issue related to supply side economics. You
can invest in better technology for smaller items because your risk of
damage or loss is spread out over a larger lot per container. The larger
the display, the more fragile it becomes and shipping time and distance
becomes more problematic.
>>>
>>> > ---
>>> > Talk Mailing List
>>> > talk at gtalug.org
>>> > https://gtalug.org/mailman/listinfo/talk
>>>
>>> Russell
>>> Sent from mobile.
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://gtalug.org/pipermail/talk/attachments/20161022/84285079/attachment.html>