cheap RGB to Component

[blackevilweredragon]

I need to build a cheap RGB to Component adapter, if possible..  I mean, really cheap...

I was looking at this http://www.siliconchip.com.au/cms/A_102648/article.html

but i don't see any schematics on it..  (it doesn't even look like it uses any chips)

Mainly, I want to connect my Genesis to one of my TVs, which only has Component inputs...  (it's a no-name 240p/480i monitor that don't do RGB oddly, only component)

[Drewman21]

Here is the one i used for my snes and Neo-geo with my tv. JrokIt is used for arcade superguns to work with your TV.


It works pretty sweet.  I just followed the RGB directions on the wiki and i got a pretty decent image.  I need to mess with a few different resistor values to get it just right.   You can order one that has the jacks removed or one that just does component w/the s-vid and composite removed for a bit less.  I paid some where $65 or so for it.  I just need to finish up my case for it and then do custom cables for each system to it.   On of the memebers here posted pictures of how they got their systems all hooked up that way.

Drewman21

[blackevilweredragon]

Here is the one i used for my snes and Neo-geo with my tv. JrokIt is used for arcade superguns to work with your TV.
It works pretty sweet.  I just followed the RGB directions on the wiki and i got a pretty decent image.  I need to mess with a few different resistor values to get it just right.   You can order one that has the jacks removed or one that just does component w/the s-vid and composite removed for a bit less.  I paid some where $65 or so for it.  I just need to finish up my case for it and then do custom cables for each system to it.   On of the memebers here posted pictures of how they got their systems all hooked up that way.

Drewman21

that one may be just perfect..  thanks

[ido8bit]

The Silicon Chip link you posted is to the incomplete "preview" version (the Silicon Chip site is weird, sometimes it wants you to pay for articles, other times it lets you view the full version).  I think someone posted a link to the complete version here a while back.  The ICs are surface mounted on the other side of the PCB.   No idea if it's better or worse than the Jrok.  

[blackevilweredragon]

does the JROK one handle 50Hz video signals?  I forgot to mention, I need both 60Hz and 50Hz capabilities..

[Drewman21]

I believe from reading his FAQ that it doesn't change the video signals it just converts them from RGB.  He mentioned it about some jamma boards are not quite 60hz and that they will not work on some TV's.

Are there any known problems. ?
The only known problems are with later Midway games such as Smash TV, NBA JAM, Mortal Komat ( 1, 2 & 3 ) . These games use a vertical sync. frequency of around 56Hz ( the majority of games having a vertical sync of around 60Hz ). This vertical sync. frequency appears to be incompatible with some Sony TV sets, most notably the Sony WEGA series.  These sets cannot sync to this frequency and the picture will roll vertically.

This is NOT a problem with the output from the converter is it purely a problem with the TV receiver.

So I guessing here that it should work either way it is just dependent on the monitor/TV that you are sending it to.  I would contact him and check.  He does pop on the Neo-geo.com forums now and then too if you post a question.

[Guest]

Seibu games run at 56khz also.

Raiden etc.

[NFG]

Seibu SPI games run at 56Hz, not 56kHz.  That's 56 frames per second, vertical frequency, not horizontal (which is typically 15kHz for arcade, 31kHz for VGA).