Hardware Capture Card/HDMI Out?

[gudenau]

Has there been any work to make a Wii U capture card/HDMI mod?

From what I can gleam it looks to be a somewhat standard LVDS sort of signal, shouldn't be super hard to do.

 

[Deleted member 586536]

Well, the wiiu does already have HDMI output... are you talking about the gamepad?

 

[gudenau]

Well, the wiiu does already have HDMI output... are you talking about the gamepad?

Of course, figured that was obvious given the context.

 

[QuarkTheAwesome]

I think there was some prototype from the 3DS capture card people years ago, before that whole industry vanished. Otherwise not as far as I know.
From what I understand the 3DS uses more traditional pixel data and clock lines rather than LVDS, though I guess the Wii U could be doing its own thing?
VideoSquoosher also exists for WUPS, which puts the gamepad/tv images side-by-side on the HDMI output, which might be good enough for your use at the cost of resolution.

 

[Deleted member 323844]

Katsukity did a commercial mod back in the day, IIRC Digital Foundry showcased it in some videos.

 

[Aheago]

Of course, figured that was obvious given the context.

Katsukity the company that uses to sell 3ds capture cards used to make one

so maybe you can find a used one somewhere and RE It. Good luck tho they didn’t make many of these and they where super expensive so I’d imagine a second hand one would be costly as well

unless of course you just make your own

 

[gudenau]

I think there was some prototype from the 3DS capture card people years ago, before that whole industry vanished. Otherwise not as far as I know.
From what I understand the 3DS uses more traditional pixel data and clock lines rather than LVDS, though I guess the Wii U could be doing its own thing?
VideoSquoosher also exists for WUPS, which puts the gamepad/tv images side-by-side on the HDMI output, which might be good enough for your use at the cost of resolution.

LVDS is a standard thing though, chances are the 3DS used it to. It is a very generic term. HDMI, USB, DisplayPort, PCI-e, they all use LVDS.

 

[gudenau]

Katsukity the company that uses to sell 3ds capture cards used to make one

so maybe you can find a used one somewhere and RE It. Good luck tho they didn’t make many of these and they where super expensive so I’d imagine a second hand one would be costly as well

unless of course you just make your own

That is what I think I will end up doing once I can get the hardware to develop one.

 

[Norris]

ive done this before it might have been my capture card but it was trash like 2-3 fps probaly just my card

 

[gudenau]

ive done this before it might have been my capture card but it was trash like 2-3 fps probaly just my card

Do you remember who made it?

 

[QuarkTheAwesome]

LVDS is a standard thing though, chances are the 3DS used it to. It is a very generic term. HDMI, USB, DisplayPort, PCI-e, they all use LVDS.

It's not LVDS: http://3dbrew.org/wiki/Video_Capture
Note the 8 data lines per channel, pixel clock and h/vsync lines. It's closer to a digital version of VGA than HDMI.
I'm told this page also has board schematics for a 3ds capcard, though I can't make much sense of it: http://optimize.ath.cx/cusb_spa3/build.html
I'm just guessing that the 3DS and DRC use similar displays, though, it could well be completely different. The best info I can find on the DRC specifically is this block diagram, which says the LCD controller is connected via i2c: http://web.archive.org/web/20200217215537/http://libdrc.org/docs/re/overview.html
Controller != panel though, so who knows.

 

[gudenau]

It's not LVDS: http://3dbrew.org/wiki/Video_Capture
Note the 8 data lines per channel, pixel clock and h/vsync lines. It's closer to a digital version of VGA than HDMI.
I'm told this page also has board schematics for a 3ds capcard, though I can't make much sense of it: http://optimize.ath.cx/cusb_spa3/build.html
I'm just guessing that the 3DS and DRC use similar displays, though, it could well be completely different. The best info I can find on the DRC specifically is this block diagram, which says the LCD controller is connected via i2c: http://web.archive.org/web/20200217215537/http://libdrc.org/docs/re/overview.html
Controller != panel though, so who knows.

Well to me the display appears to use differential pairs, but I could be way off.

I don't have the test equipment to go probing for this stuff.