VGA to RGB on PSone screen

usbcd36 · Post by **usbcd36** » Wed Jun 15, 2005 9:26 pm

I was wondering if it is possible to use a circuit such as this to connect a VGA device (like a computer) to a PSone screen using RGB so it would be clear enough. The connections seem to match up to the diagrams in this topic.

Post by **gannon** » Wed Jun 15, 2005 9:35 pm

yeah, I think you need a 220uF cap on each color line though

usbcd36 · Post by **usbcd36** » Thu Jun 16, 2005 7:42 am

How would that be done? Where would I hook up the capacitors?

Post by **gannon** » Thu Jun 16, 2005 8:20 am

You just hook them up between the rgb output of that circuit and the rgb input of the psone lcd.

Post by **Gamelver** » Thu Jun 16, 2005 8:49 am

which way do you wire the capacitor(s)?

Post by **gannon** » Thu Jun 16, 2005 9:03 am

it doesn't matter, you only need ceramic capacitors.

Post by **Gamelver** » Thu Jun 16, 2005 9:40 am

ah...I thought you were talking about electrolytic capacitors

....

tom61 · Post by **tom61** » Thu Jun 16, 2005 2:52 pm

You need to run special software called Power Strip to bring the horizontal refresh rate down to 15kHz on the PC to display on a PSOne screen.

Post by **gannon** » Thu Jun 16, 2005 3:12 pm

But that's only for windows, if you're running linux change the X11 settings.

usbcd36 · Post by **usbcd36** » Thu Jun 16, 2005 6:01 pm

What settings would you change in BSD Unix (the system the computer will be running)? Also, how does the computer determine available resolutions? I would like it to be able to handle at least 640x480, 800x600, and 1024x768 because those are the 3 I am used to and they seem to have enough room onscreen for stuff.

Post by **Triton** » Thu Jun 16, 2005 6:21 pm

sorry, i think the psone screens max resoluton is 640x480

not positive though

usbcd36 · Post by **usbcd36** » Thu Jun 16, 2005 7:21 pm

Oh well, I may have to change some sizes. Is there any way to bypass the volume controls on the PSone screen and just have it run at full volume all the time? I would like to use an external audio source that already has a volume control.

soundwave · Post by **soundwave** » Thu Jun 16, 2005 8:42 pm

Just run the sound from the mobo to the external speakers/volume-stuff, never connect to the PSone screen.

usbcd36 · Post by **usbcd36** » Thu Jun 16, 2005 9:12 pm

So should I put in a whole other audio amplifier (I'd use an audio amplifier IC because it can drive powerful speakers and is a tiny solution because the circuit needed to make it work is about 1"x1" and about 1/2" thick) and use the PSOne screen speakers? That seems like a lot of work to have working speakers. Is there a place to hook directly into the audio amp on the PSOne screen?

nos_slived · Post by **nos_slived** » Thu Jun 16, 2005 11:25 pm

Soundwave, you thought what I originally thought. I think he wants to use the speakers on the screen, but with a different source of audio, instead of the computer.