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Main => Monitor/Video Forum => Topic started by: Jimd0586 on April 14, 2016, 12:41:24 pm

Title: LCD install from Rasberry Pi- make look retro?
Post by: Jimd0586 on April 14, 2016, 12:41:24 pm

So, I have a 19" 4:3 LCD. I wanted a CRT in my cabinet but couldn't fit it in. I was going to convert my HDMI out from the pi to VGA to degrade the signal. My thought process is make the signal as campy as possible so maybe the display looks more 80's authentic. While this is probably wishful thinking (as the monitor is just going to be sharper resolution than an old CRT), does it have potential?

Is there anyway I can make the output on the screen look more like a CRT? Would adapters and converting the signal help? Any thoughts appreciated.

Jim

Title: Re: LCD install from Rasberry Pi- make look retro?
Post by: dmckean on April 14, 2016, 12:48:21 pm

HDMI to VGA scan converters will add lag and I would stay away from them. Just use the scanline options in the mame.ini file.

Title: Re: LCD install from Rasberry Pi- make look retro?
Post by: Jimd0586 on April 14, 2016, 12:59:35 pm

Alright, thanks for the tip. So HDMI to DVI would be a better option then as they are both digital signals and thus would have presumably no lag?

Title: Re: LCD install from Rasberry Pi- make look retro?
Post by: dmckean on April 14, 2016, 01:07:10 pm

HDMI is DVI added audio, you just need a passive cable to convert one to the other.

Title: Re: LCD install from Rasberry Pi- make look retro?
Post by: Jimd0586 on April 14, 2016, 01:24:06 pm

You're the man! Thanks!

Title: Re: LCD install from Rasberry Pi- make look retro?
Post by: nitrogen_widget on April 14, 2016, 03:01:31 pm

I've tried these shaders with retroarch & LR-mame2003 and they look pretty good on my 19" 4:3 lcd monitor.

http://blog.petrockblock.com/forums/topic/crt-pi-a-pi2-friendly-crt-shader/ (http://blog.petrockblock.com/forums/topic/crt-pi-a-pi2-friendly-crt-shader/)

I'm not sure the hdmi to vga converter i have for my RPI adds lag at all(I have no noticed any) but if that's a concern a GERT VGA is also an option.

Title: Re: LCD install from Rasberry Pi- make look retro?
Post by: Jimd0586 on April 14, 2016, 03:51:12 pm

Thanks Nitrogen. I'll probably give that a shot. Is that the overlay floob used on his YouTube video?

FYI, from watching videos online, I have a hard time seeing any difference. I assume when you actually get these overlays running correctly tho you can see a pretty big difference between before and after?

Title: Re: LCD install from Rasberry Pi- make look retro?
Post by: nitrogen_widget on April 14, 2016, 05:10:47 pm

Quote from: Jimd0586 on April 14, 2016, 03:51:12 pm

Thanks Nitrogen. I'll probably give that a shot. Is that the overlay floob used on his YouTube video?

FYI, from watching videos online, I have a hard time seeing any difference. I assume when you actually get these overlays running correctly tho you can see a pretty big difference between before and after?

They allow curvature and scanlines so yes it looks pretty good.
need an RPI2 though.

Title: Re: LCD install from Rasberry Pi- make look retro?
Post by: Jimd0586 on April 14, 2016, 05:30:05 pm

How about a RaPi3?

Title: Re: LCD install from Rasberry Pi- make look retro?
Post by: nitrogen_widget on April 15, 2016, 02:09:29 pm

Quote from: Jimd0586 on April 14, 2016, 05:30:05 pm

How about a RaPi3?

you need a rpi2 due to it's power so an rpi3 will work also since it is more powerful than a 2. :)