http://www.pccables.com/70717.htm does anyone know how to make that cable so that i can hook an RCA LCD up to my VGA port?
Those types of leads only work on certain VGA ports that have the connector multiplexed with the composite output. It won't work with a standard graphics card.
apple makes this adapter for the mac mini and imac g5 i have a mac mini that im trying to make this adapter for i know this will work with my application
S-video RCA <> VGA, or the other way around, is very complicated from what I'm lead to belief. They're also quite hard to buy, the best bet is to see if you can find a country local custom cable maker, and ask them to do it for you, although expect to pay up to 50CAD, maybe a little more.
i find it hard to believe that them, along with apple, sell dongles (apples is $20) that converts DVI and VGA to rca/svideo connectors, and you cannot duplicate it. and that noone has schematics/pinouts on how to build it!?
I believe Apple adds in the signal output for that reason, where others won't. I'd imagine they have some sort of protocol that says "adapter is attached, spit out S-video and composite signal instead of DVI" But, by all means, here's the pinout of a VGA cable: http://tacashi.tripod.com/elctrncs/vga2tv/vga15.gif
i think that for this use, apple uses one of the unused pins on the VGA connector and transmits the composite video signal on it, then uses the dongle to split it off that pin. to make your own, youd have to figure out what pin is carrying the composite signal.
That's correct. There is no standard VGA-to-RCA adapter. They are 100% vendor-specific, and rely on hardware built into the video card. To dive a bit deeper, you're converting from a signal with three separate colour lines and two separate sync lines into a single wire. In that single wire, you have several signals all encoded in a special way so that they can be split apart by the receiving TV. All of that's not going to happen using passive components. For more info about composite video, check out http://en.wikipedia.org/wiki/Composite_video Edit: Since this is about modding, even when it may not make sense... Check out the Motorola MC44011. It's been discontinued, but if you can find one, it may do what you're trying to do.
read the posts a little harder i have a mac mini apple makes this cable for mac mini but it costs like $40 i want to make my own if possible i dont need to do any converting, i know its vendor specific, specific to my mac, hence why i want to make the cable i guess noone has the schematic for it...
you could always try to buy one on ebay, they are for sale (cheap), just type in "vga rca"...(not inserting links since there are quite a few of them)
theres practically none a billion vga to composite though (R G B) RCA is like, one video out vga to RGB is easy like rice to make
it might be to late for you but what i would suggest would be to take a rca cable cut it and put the sheild to ground on the vga connector, then try connecting the middle rca wire to pin 4,9, and then 11, sense those connections usually arent connected, maybe apple used one of them. just a thought.
