HDMI controller board for display panel

I found this one on eBay: EDP Controller board kit Type c mini 2 HDMI for NE135FBM-N41 2256X1504 Panel LED | eBay

It looks like a couple of the others that are listed here, just on eBay instead of Ali Express. I got three of them today and tested two of them, and they work wonderfully via usb-c. It works regardless of which usb-c port you plug it into, and powers itself over the same connection, so having a separate power cable is unnecessary.

I haven’t tested the mini-hdmi port, the usb-b port, or the headphone jack yet. Also, the UI defaults to Chinese, though it can be changed to English among other languages.

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Hello, I was wondering if anyone had an update on finding a board that can adapt from the mainboard 40pin to a female DP or HDMI? I’d love to be able to drive a display from that rather than use one of my external ports.

I haven’t seen an off the shelf solution that would work, but there are suppliers like this that should be able to make an assembly: intel System-Validation Methodology for Embedded DisplayPort kabel,eDP cable,custom cable,JAE_FI-D44C eDP cable

We have enough information in the GitHub repo for it.

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Hello,

I am trying to do what Mulverine has expressed interest in: using the mainboard eDP to drive a female HDMI out. Just procured this adapter https://www.amazon.com/dp/B0BTYRWSBK that has a 40-pin eDP input (it didn´t state the pitch but now that I have received it, I can confirm that it is .5 mm, so if I understood correctly I should be able to plug into it with the Framework-specific eDP cable sold on the marketplace) and turns it into an HDMI out.

I also found this other adapter https://www.mouser.com/ProductDetail/congatec/conga-MITX-eDP-to-DP-Adapter?qs=sPbYRqrBIVlhNQXU%252B91efw%3D%3D that might work if a DisplayPort out is preferred to HDMI.

I am planning to design a case to host the Framework mainboard, this HDMI-out board, the Wi-Fi card and antennas, the power button (to have a nice power indicator and that would make it possible to also use the fingerprint reader), and this USB hub https://www.amazon.com/dp/B08GG6WM5H (to get USB-A for a wireless keyboard/trackpad combo and the occasional USB key, an SD card reader, and a gigabit Ethernet, along with a backup HDMI port in case the main one fails). The second USB-C on the hub side (and made less accessible by the hub) would be dedicated to power input, the other side of the case would be flush with the USB-Cs for compacity (so no adapter card receptacles).
I will have to wait until I get my AMD upgrade mainboard before I start getting serious about printing the case, assembling, and testing everything. If it works I would make the case design available along with the links to the various parts used.

I am wondering about a couple of things though:

  • will I get sound through the HDMI out (is that what the AUXP and AUXN on the pins 6 and 7 of the mainboard eDP are?), do I need to also include the sound daughter board to have any sound out or is this only in charge of providing a jack connector and powering the speakers?

  • is the Framework mainboard eDP (plus Framework-specific eDP cable) outputting eDP 1.2-compliant signal or at least able to go in a backward-compatibility mode that would automatically output such signal?

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I just bought one of these from Ebay for my extra screen; I just upgraded to the matte display and wanted to put my old one to use. I’ll do the CAD for a 3D printed case that fits everything needed once I receive it in a couple weeks.

Super excited!

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I wanted this to be usable immediately, so it’s janky as all hell, but it works!
I used the cardboard packaging from the box the new screen came in, some electrical tape, and some command strips (for hanging stuff on walls) so theoretically this should be entirely disassemblable when I decide to do this properly.

I did have to go buy a mini-HDMI to HDMI cable from Best Buy, I forgot that this was mini-HDMI. And the USB-C video input doesn’t seem to work, but I have an HDMI expansion card, so I don’t mind as much.

The slit on the cover bit is so that I can fold it and use the screen in portrait (below), which mostly works, and is really nice for reading documents.

I also used cardboard because I wanted it to fold up super thin, so it’ll fit next to my laptop in my bag. I think I’ll do the design to make it out of two sheets of 1/16 acrylic or thin sheet metal eventually, because this obviously isn’t a long-term solution.

Getting the OSD back into english from the Mandarin it shipped with took a minute, but I did get it, and the options are pretty good. It runs at a full 2256 x 1504 at 60Hz (which is actually 59.94 Hz or whatever, not true 60), and can use the full range of brightness.

It’ll take input power through either of the USB-Cs, there doesn’t seem to really be a difference, but power through the micro-usb leads to a noticeably dimmer screen. It does seem to want the full 15W that it says to give it, so I’ll have to see what it’s like running it off of my laptop battery.

I did cut a ziploc baggie and put it over the electronics on the back, because I didn’t want to leave them fully exposed, but they wouldn’t really have fit within the cardboard.

I’ve yet to try it with anything that isn’t my laptop, but I did buy the HDMI board with the goal of using it with my xbox as well, in a mobile setup, so I’ll add updates after I see if that works.

Edit: It does work with my Xbox, but it refuses to display at the proper aspect ratio, so it’s squishing the 16:9 signal onto the 3:2 display. This is fine, I guess, but I think it’s a limitation of the control board, because it says it supports 16:9, and lets me select it in menus, but then is just a black screen when I do.

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https://www.aliexpress.com/item/1005006813015694.html

This one looks like it has breakouts for USB that could connect the webcam module. Is there any reason anyone can see that this controller board wouldn’t work?

Hi, newbie here.
I’m honestly curious- Has anyone found a Control board that
A) Has both an HDMI In/Full Size Display Port and ALSO accepts a DP-Alt mode signal over USB-C

B) Two USB-C Ports that both accept DP-Alt mode and/or can power the device

or C) Has a USB-C port that accepts DP-Alt mode & power, and another USB-C that just provides power to the LCD

Because I’d love to reuse an old FW13 panel, but also I’d like whatever I rig up to have the option of connecting to connecting to something that doesn’t have the ability to output a video signal over usb-c if I want.

I figure the easiest option would be to find a board that already supports DP Alt over USB-C and also has an HDMI/Display port built in.

Failing that, I don’t see why I couldn’t one of the existing fw expansion cards to plug into a USB-C/DP port, and powering the screen off of a separate USB-C port.

It just seems better to me for keeping the thing all self-contained.

IIRC, The controller boards need to have firmware compatible with the panel they’re controlling.
The model number for the panel used in the framework 13 is NE135FBM-N41,
so you’d need to make sure that the board supports that model.

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Hey, I have 2 boards - one that can take the connection via a miniDP, miniHDMI or USBC. Its pretty inefficient, was expensive and is large. Thus I don’t like it. This one is not publicly sold but I can connect you to the ebay seller that i purchased it from

I have another smaller one that must use miniDP for the signal and usbc for the data. I used this with a DP to mini DP cable. Its pretty efficient but for me the 2 cable set up is not what I like. However, it does seem that this is close to what you’re looking for:
https://de.aliexpress.com/item/1005006489764424.html

Display port alt mode over usb-c is kind of a must for me.

I just want the option of popping in a framework HDMI or full size display port expansion card so I can use it with another device.
But if I do use an expansion card like that, I’d need another cable to provide power.
Hence the second usb-c port

I just had an interesting but possibly ill-advised idea

What if you could supply power to the LCD controller through a spare Framework battery?
Then you’d only need the one usb-c port with an expansion card adaptor, then it could run on internal power instead of needing an extra cable and usb port.

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I have an idea – what if we incorporated two screens into a framework laptop shell, complete with the beautiful framework hinge, and included an internal battery for power? We could repurpose the upper aluminium frame, the hinges, and the battery space, but we would need a clever individual to develop a “mainboard” that accepts USB-C display input and provides two monitor outputs. It could even be designed to work with the existing expansion slot architecture. If we included two type-C ports, users could choose whether they want the external monitor to act as an external battery bank.

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It feels like a dual screen lapdock though not sure how useful a setup like this without a touchscreen.

I was thinking of a lapdock for the Framework but that would cost a lot more.

For anyone looking for an affordable controller that ships to Europe (Germany at least). I have tested this one and it works great:

https://de.aliexpress.com/item/1005006495336374.html

It draws power through USB-C, but needs a separate mini-dp connection (in my case with a usb-c to mini-DP cable) for the signal.
I would prefer one which goes straight to USB-C like the one recommended before, but unfortunately I couldn’t find one for a reasonable price that ships to the EU.

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I guess it needs an adapter with power delivery. If you get one let us know if it works!

https://www.amazon.com/StarTech-com-DisplayPort-Adapter-Power-Delivery/dp/B084DW7MJ2

Actually I just let it draw power from my charger. I’m unlikely to use the second monitor when on battery power anyway and if i ever have to I can just use a second port on the laptop (one for power and one for signal).

If using only one USB-C port is a must have, i think its better to get a different controller. This seller also ships the one tested and recommended in the posts above to the EU, but its much more expensive: https://de.aliexpress.com/item/1005005849614883.html

Is there some way to convert the display of a framework laptop into a regular external monitor? I would love to upgrade my laptop screen to the higher resolution and refresh rate option, but can’t justify doing so if I’ll have no use for the previous display.

Given how high-quality these displays are, I could absolutely see an external monitor casing being sold as its own product separate from the laptops entirely.

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See this thread with lots of previous discussion on the subject: HDMI controller board for display panel

There are a number of compatible driver boards available from AliExpress, but I’m not sure if anyone’s designed a clean enclosure.

I just ordered a controller for myself yesterday, the one with USB C power and full size display port input so I can use with my desktop computer as well, a little troublesome if I used the Framework or my ROG Ally but least it’s more flexible in it’s operation. I’ll most likely 3D print a plastic enclosure for the controller but get the Framework shell and bezel to house the display itself

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