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Topic: Composite Video Generating (Read 8204 times) previous topic - next topic

Gericom

Colors:
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Markus_L811


Gericom


Yes really impressiv work.

Thanks! It will even become better when I change the resistors of my R2R ladder. They're a bit too high, so that's why the pictures are a bit dark. Here is another picture:
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Gericom

NSMBU worldmap (aka little details):
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Gericom

I just tested on a real tv, and it looks very nice! No color errors and such. Keep in mind that it works with a framebuffer, so you can draw on it in runtime. And you can use every color you want!
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Gericom

I've added a video op-amp, and the brightness is much better now.
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Gericom

I made the wss working again:
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Gericom

Another widescreen picture in the right proportions:
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Gericom

Proof of concept video:
http://www.youtube.com/watch?v=ecU-Zi--jNw
(please subscribe)
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This is so cool, well done!

I would love to see some more information about wiring etc.

Gericom


This is so cool, well done!

I would love to see some more information about wiring etc.

Thanks!
It is a r2r ladder (kind of) and a video op-amp (which you can get for free). That's it.
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Gericom

I have started working on this a few days ago, and the video op-amp is not needed anymore now. It turned out that the the voltage ratios were not correct. I fixed it, and in combination with a new and better r2r ladder, it works much better. I also switched from 8 to 5 bits, cause that's just more suitable for a 1% r2r ladder.

There are still some color phase errors, but since pal uses phase alternation, those errors are not much noticable.
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Hi There.
I just got myself an Arduino due today and thought what better way to try it out then with your cool graphics :)
Do you have a library ? or any code I can run. Possibly a circuit diagram if it's not to much trouble of course.
You did a fantastic job on your project, well done
Thanks
BlackSnake

Gericom


Hi There.
I just got myself an Arduino due today and thought what better way to try it out then with your cool graphics :)
Do you have a library ? or any code I can run. Possibly a circuit diagram if it's not to much trouble of course.
You did a fantastic job on your project, well done
Thanks
BlackSnake

Thanks, I have a sketch you can run (it consists out of multiple files) and I will make a schematic. I will do this when I have time to do so.
Subscribe my youtube channel: http://www.youtube.com/user/MKDS3

iSpider

Any update on your code and wiring? I'd love to try this!

Gr. Uit Amsterdam

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