Main > Raspberry Pi & Dev Board
Raspberry pi 3b ,can it output 15khz without hardware?
Substring:
--- Quote from: abispac on April 04, 2020, 11:17:52 pm ---what part of without hardware,do you guys dont get?
--- End quote ---
Probably because a PI just has HDMI, GPIO and USB. And among those 3, nothing natively outputs 15kHz without some (hardware) magic. So the question was probably bad.
keilmillerjr:
--- Quote from: Substring on April 16, 2020, 06:01:06 pm ---
--- Quote from: abispac on April 04, 2020, 11:17:52 pm ---what part of without hardware,do you guys dont get?
--- End quote ---
Probably because a PI just has HDMI, GPIO and USB. And among those 3, nothing natively outputs 15kHz without some (hardware) magic. So the question was probably bad.
--- End quote ---
All raspberry pi units to date have composite interlaced and later firmware progressive.
Osirus23:
--- Quote from: keilmillerjr on June 23, 2020, 02:05:40 am ---
--- Quote from: Substring on April 16, 2020, 06:01:06 pm ---
--- Quote from: abispac on April 04, 2020, 11:17:52 pm ---what part of without hardware,do you guys dont get?
--- End quote ---
Probably because a PI just has HDMI, GPIO and USB. And among those 3, nothing natively outputs 15kHz without some (hardware) magic. So the question was probably bad.
--- End quote ---
All raspberry pi units to date have composite interlaced and later firmware progressive.
--- End quote ---
Yep, 240p from the built-in composite jack. So yes, Rpi3 can output 15khz without hardware. I think the OP is bailed on us though.
snoopyk:
--- Quote from: abispac on March 29, 2020, 06:44:02 pm ---Hey, iv used google with no luck, so far all solutions use some kind of hardware, so i was wondering if someone here knows a way to output the resolution on a crt arcade monitor. Thanks for any help.
--- End quote ---
HDMI@VGA and VGA@Scart working!!!. Scart input R,G,B, and Sync.. connect to Arcade monitor, it might work, you then need to edit the cfg file. I didn't try it on the arcade monitor but it worked 15khz on the Scart tv, I think it will work on the arcade crt monitor as well. in arcade automat I have 15khz already from RPI3B + with Vga666. For me, it is easy to buy Vga666 and download the finished image, you need PinHP, RGB-PI, Regamebox, etc ...
Sorry my english ..
mahuti:
Fyi, though my answer includes hardware, the simplest solution ive found is to use a Jpac.
I've used GertVGA....shrug... its fine... but was missing a piece when I ordered it, so it took a long time to get it going. I've tried a few converters (but they were garbage... didn't save settings on restart, stopped working, etc). At some point I had custom firmware that let me output 15hz via composite (before that was officially possible) directly to an arcade monitor, but for some reason I didn't like that solution either. One day I plugged in my jpac and it worked fine. One and done.
Jpac is a known quantity, easily available and has other value as well. Unless price is the absolute determining factor, I'd consider it the obvious option.
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