Making a PC-98 RGB → VGA Video Adapter (Semi-DIY)

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  • Опубліковано 12 жов 2023
  • Actual soldering starts at around 17:00.
    Here's some film of me making an RGB to VGA converter for the Japanese NEC PC-98 line of computers. These use a 15-pin DA15 (sometimes incorrectly called DB15) connector, by recycling the shell of a Macintosh DA15 → VGA converter with some fresh wiring and new D-sub connectors.
    Sorry for the audio delay. Still working on figuring this whole recording thing out; I like the hybrid desktop/camera setup, but need to figure this out.
    Sorry for the shaky hands. Just had done a lot of heavy lifting and was excited; hands stopped shaking a little later in the day. Not sure what the deal was there.
    I had to desolder all the components from the adapter's original PCB, cut all the traces, and re-use it to hold the connectors together. Could probably have made my own board, but I've never done it before and didn't want to start trying to figure it out now when I'm trying to get things done quickly.
    If anyone wants to make a 3D printed model for a DA15 ←→ DE9/HD15 (VGA) sized plug converter, you'd be my hero. :)
    Might do a video on the PC-98 (actually an Epson PC-486GR) soon - especially if it turns out to actually work. Fingers crossed that the battery didn't leak badly while it was in storage with the last owner and kill it. Maybe I'll luck out and it's a coin cell instead of a NiCad.
    At 16:45 or so I say I am going to use my "Dell U2410M" - that's a model number that doesn't exist. I meant to say U2410H. My other monitor is a U2412M, which is what caused the confusion. U2412m will likely NOT support the PC-98's 24KHz horizontal sync pulse rate - but the U2410H will, and will also support 15KHz RGB.
  • Наука та технологія

КОМЕНТАРІ • 6

  • @l_arachel
    @l_arachel 8 місяців тому +1

    Looks awfully familiar... :P

    • @wyatt8740
      @wyatt8740  8 місяців тому

      Not surprising, since I sent that exact one to you! :D

  • @EpsilDelta197
    @EpsilDelta197 8 місяців тому

    I hope that it worked! Been having some trouble really figuring out what I should get. There are a number of ones on ebay already, but I don't know if they'll do the RS-232 to VGA properly without some sort of conversion, even if I have a proper monitor.

    • @wyatt8740
      @wyatt8740  8 місяців тому +1

      It did work on the first try, after I soldered it up! -- Also, there is no such thing as RS-232 to VGA that I know of. DA-15 is the name of the connector; sometimes people call it DB-15 or DB15 instead. RS-232 serial ports are typically 25 pin or 9 pin.
      The 15 pin connector sends out analogue RGB, very similar to VGA.

  • @scolic03
    @scolic03 9 місяців тому

    >make a 3D printed model for a DA15 ←→ DE9/HD15 (VGA) sized plug converter
    One day I will master 3D printing, but that day is not coming soon ;______;

    • @wyatt8740
      @wyatt8740  8 місяців тому +1

      Yeah, that's why I bought an existing adapter for something that size (mac monitor adapter) to repurpose. Actually, I made a couple 3D models in Google Sketchup (when Google still owned that) forever ago, so I know I probably _could_. Just don't want to yet. Could also use lego, though, I bet!! I've made a casing for a USB hub out of them before.