usb display hack .??

davc · Post by **davc** » Tue Jan 19, 2021 7:36 pm

has anyone tried this on a Kronos ..??

i'm going to order adapter in the near future to try it on my MODX6 ... might be nice on Kronos 88 also .. now that the Editor won't work with newer Windows 10 OS builds ... !!?!

link to MODX hack vid ..

https://m.youtube.com/watch?v=yrolljRjvYQ

BlackForest · Post by **BlackForest** » Tue Jan 19, 2021 10:04 pm

Nice find...yeah, please keep us posted if it works out or not.

theescapist · Post by **theescapist** » Wed Jan 20, 2021 5:24 am

I googled this out of curiosity and it led me all the way back to this old thread in this forum:
http://www.korgforums.com/forum/phpBB2/ ... 7f3c90f1a5

In short, it won’t work on the Kronos, at least if my understanding of the approach is correct.

Dacuck1 · Post by **Dacuck1** » Sun Jan 24, 2021 3:37 pm

not looking to Extend the display ,... as in touch interface ...

just looking to ' Mirror' it to a larger device, at a high reference point for better visibility and easier on fused neck .. !?

just a visual reference ... like I used to get when the Editor still worked with Windows .. !??!

KK · Post by KK » Sun Jan 24, 2021 7:41 pm

Dacuck1 wrote:...just looking to ' Mirror' it to a larger device, at a high reference point for better visibility and easier on fused neck .. !?

I know what you mean. Unfortunately, the only video out on the Kronos will not give you the screen but the underlying OS prompt, which is of no use except to diagnose certain problems. I modified the screen on my Kronos to adjust its angle as I wish, but it is very complicated.

average_male · Post by **average_male** » Sat Jan 30, 2021 12:44 am

IIRC, Kronos sends video out via Serial port to its LCD driver board and not via USB, VGA nor HDMI, right?

kronoskarma · Post by **kronoskarma** » Sat Jan 30, 2021 2:24 am

I would so love to attach a monitor to the Kronos. So tiny for my aging eyes!

Mike

KK · Post by KK » Sat Jan 30, 2021 2:37 am

average_male wrote:IIRC, Kronos sends video out via Serial port to its LCD driver board and not via USB, VGA nor HDMI, right?

The Kronos screen contents comes from OMAP processors and dedicated ICs on Korg proprietary PCBs. The internal video out on the motherboard gives only the OS prompt.

SeedyLee · Post by **SeedyLee** » Sat Jan 30, 2021 6:05 am

That is true, but it may actually be trivial to redirect /dev/fb0 to another USB frame buffer device. It depends on whether Korg have implemented their own frame buffer driver with unique kernel functions or not.

kronoskarma · Post by **kronoskarma** » Sat Jan 30, 2021 1:27 pm

I happened to have one of those USB to VGA adapters for when I was doing audio/visual.

I attached it up to the Kronos (and M3) and to a VGA monitor - no signal.

Oh well.

Mike

davc · Post by **davc** » Sat Jan 30, 2021 2:33 pm

Bummer ..!

thanks for trying it out ..!

probably still give it a try on my MODX ... could save part of the stiff neck & strained neck ... or could go to eye doc and get proper glasses ..!!

average_male · Post by **average_male** » Mon Feb 01, 2021 2:05 am

KK wrote:
average_male wrote:IIRC, Kronos sends video out via Serial port to its LCD driver board and not via USB, VGA nor HDMI, right?
The Kronos screen contents comes from OMAP processors and dedicated ICs on Korg proprietary PCBs. The internal video out on the motherboard gives only the OS prompt.

right, the video data is sent from the motherboard’s serial port.

KingKronos · Post by **KingKronos** » Mon Feb 01, 2021 3:20 am

The text on the display is pretty small. And we're all used to smooth and quick touch response now.

What if you could hook up an ipad? I feel like the Kronos has all the pieces and parts with all the engines and MIDI control. It has sysex, so an editor could be made. But what do most users want? Do you want the exact same screen only bigger? Or maybe the pages need to be arranged better, less jumping.

Someone made an ipad app that mirrored the combi view, I forget what is was called. Doesn't seem to be talked about much.

KingKronos · Post by **KingKronos** » Mon Feb 01, 2021 3:28 am

fwiw, I connected my AOC usb display to the Kronos. It flashed the logo, but didn't power up all the way. And then the Kronos hung during boot up, and said please disconnect usb device.

That's ok. I got mine at an angle so I'm good for now.

Narioso · Post by **Narioso** » Mon Feb 01, 2021 6:29 am

KingKronos wrote:The text on the display is pretty small. And we're all used to smooth and quick touch response now.

What if you could hook up an ipad?

Wifi unit attached on usb would be a good solution.
And a firmware update to make that possible and an app to go with it.

Even my cheapest $400 DSLR have wifi to do that, on both iOS or Android.
So the tiny display become nice and bigger and can be attached at any place on a video stand etc.
- yes, it does live video

My latest laptop has really nice features with gestures and stuff on touch pad. So a wifi unit maybe with a touch pad to attach somewhere - or built in on a Kronos successor.

Touch pad allow up to 4 fingers to do certain movements. And you are not dependent that screen is right there to touch.

With a tilted upright display it's better with horisontal touchpad, I think.