Circuit that converts Hsync and Vsync into Csync

[TWSTED] · 09-12-2003, 05:24 AM

Can someone help me.

Ive read that Jeff is an Electronics Expert SO im posting it here.

Ive got a LCD Hooked up with RGB but i cannot get the Sync right.

I need to have a CSync input but i only have VSync and HSync. I need a Circuit that converts Hsync and Vsync into Csync without using the Green.

Nathan

jol · 09-12-2003, 06:01 AM

1. lcd post in lcd section, now that is not hard to get huh?
2. SEARCH
3. read rules again
4. http://www.hut.fi/Misc/Electronics/c.../vga2rgbs.html

Zip-Lock · 09-12-2003, 01:00 PM

5. Descriptive title (I changed yours.)

tom61 · 09-12-2003, 05:31 PM

TWSTED, are you running the software to get the sync down? This is required, as most RGB monitors will not take normal VGA (so you aren't going to see the BIOS screen)

The circuit to make H and V sync be C Sync is just a XOR gate.

[TWSTED] · 09-13-2003, 06:53 AM

I got my LCD WOrking. Its just that the Colours are all over the place, The screen is mainly green

starfox · 09-15-2003, 08:19 AM

Mostly green? check your solder joints for shorts.

[TWSTED] · 09-15-2003, 08:44 AM

Okay. My Video card just ****ed up, Its permanetly green in several computers. Hmm. I might redo all my Soldering again.

How would I ground green if there is no Green Ground cable?

tom61 · 09-15-2003, 06:15 PM

Quote:

How would I ground green if there is no Green Ground cable?

To regular ground.

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