How to Create a VGA to Composite Video Converter for RCA Output

[Tesladude]

http://m.ebay.com/itm/271230081889?cmd=VIDESC&gxo=true

How can I set this module up to have just a single video output so it can work with rca?

 

[davenn]

you would have to convert one of the video formats it currently produces say the RGB to composite video
not impossible, but would be easier just to get a camera module that already outputs composite video

DAve

 

[meBigGuy]

http://www.epanorama.net/faq/vga2rgb/interfacing.html has a mono monitor example towards the end

But I agree, buy the right camera module.

 

[Tesladude]

Ya I tried but I cannot fond one for less than $30. Unless you guys know of any?

 

[sophiecentaur]

Ya I tried but I cannot fond one for less than $30. Unless you guys know of any?

Keep looking and bidding. The secret with eBay is never to be in a hurry if you want a bargain.

 

[AlephZero]

The secret with eBay is never to be in a hurry if you want a bargain.

... and never make a low bid a long time before the end of the auction. That is just telling the rest of the world you think it's a bargain at your bid price.

The best time to bid is usually 1 or 2 seconds before the auction closes, if you still like the price.

 

[AlephZero]

http://m.ebay.com/itm/271230081889?cmd=VIDESC&gxo=true

How can I set this module up to have just a single video output so it can work with rca?

First, decide what project you want to do. Do you want project to modify a camera, or to use a camera? Either could be fun and/or educational, but they are two different things.

 

[meBigGuy]

Actually, the link I posted won't work to convert RGB into clean composite. But it will almost work. If I remember correctly there will be artifacts due to improper hsync during vsync. But it might still be good enough for what you need.

This guy says his circuit works
http://alistairsserver.no-ip.org/public/vgatv/vgatv.html -- just a bunch of resistors and two transistors.

The problem is that during vsync the polarity of the hsync pulses needs to change.

The right way to do this is http://zxm.speccy.cz/dok/Konvertor%20VGA%20na%20PAL%20a%20NTSC/VGA%20to%20PAL%20and%20NTSC%20video%20converter.htm except it is now S-video, not composite.

The right way to make composite sync is with XOR gates as in the above circuit.