VGA to Nintendo Video Mod

Super Mulletman · Post by **Super Mulletman** » Sat Jul 31, 2004 6:01 pm

I wanted to make an adapter so I can get my nintendo systems to work on a computer moniter using RGB. This would obviously mean better resolution, color clarity, more so than almost any tv. I know that the N64 and GC can't output RGB without modification, I'll take care of those two later, I just wanted to ask a couple of questions first so I don't screw up something later.

1. VGA takes in H-sync and V-sync, but the super nintendo only outputs composite sync. Could I just mix the H- and V-sync signals to create composite sync? If not, how would I go about doing it?

2. VGA has red green and blue "return signals" rather than grounds. How would I fit this in?

Thanks.

Post by **gannon** » Sat Jul 31, 2004 6:24 pm

don't even try it.
The rgb from consoles need the scan rate doubled to work on a vga monitor.
Either buy a scan doubler, or get a rgb monitor that accepts a 15khz scan rate.

Super Mulletman · Post by **Super Mulletman** » Sat Jul 31, 2004 6:29 pm

How much would a scan doubler cost, and where would I find one? I don't want to buy an RGB to VGA adapter because those tend to be rather pricey, so I would much rather make one.

Post by **gannon** » Sat Jul 31, 2004 6:39 pm

A scan doubler is essentially a rgb to vga converter.
A good one costs around $150 dollars, and if you're lucky, I've seen 27" rgb televisions sell for that price on ebay. The problem with a rgb television rather than a rgb vga monitor is that it isn't as high in resolution.

After you buy the parts and finish making a scan doubler it will cost about the same as a standard rgb to vga coverter anyways, plus most of the components needed are smt only.

Stooge · Post by **Stooge** » Sun Aug 01, 2004 5:23 am

gamesx have a good one on review I like the sound of it but it's so pricy

Super Mulletman · Post by **Super Mulletman** » Sun Aug 01, 2004 2:02 pm

Thanks Stooge! That's absolutely perfect! I can get all of my game systems hooked up (and my moniter at the same time) and I already have speakers (computer speakers, but they get the job done and then some), so with this I should be set. Seriously, I can't thank you enough, and also thanks Gannon for the advice

Post by **gannon** » Sun Aug 01, 2004 2:15 pm

and if you want to get a cheaper one you can probably buy a composite-vga converter and then open it up and bypass the chroma decoder.

Super Mulletman · Post by **Super Mulletman** » Sun Aug 01, 2004 5:36 pm

Yeah, although the one that Stooge pointed out also has RF, S-video, and of course RGB and composite already, and it only costs $180 on lik-sang.com. Also it has a built in bypass thingie so your computer signals will stop going to the moniter when your game or movie stuff is on. Plus it has a remote and controls from brightness and sharpness, v- and h-sync, to even gamma settings. Thanks though.