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Thread: Unshielded Printer cable?

  1. #1
    Maximum Bitrate KyleYankan's Avatar
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    Unshielded Printer cable?

    Hey everyone, I have a quick question. My previous alphanumeric lcd just died. I'm replacing it with a smaller one, which is parallel controlled. Unfortunately, I only have a really-long serial cable, for the old lcd. Well, This won't work obvisuly with the new parallel controlled one. So, here's what I have to ask: Can I run the 8 data wires unshielded by my speaker wires? Will I notice interefernce?

    If not, can I make an "adaptor", and figure out how to use the LCD in 4-bit mode, and use the same serial cable? I can't find too much on 4-bit section, but I'm assuming that lets me use less data wires? I can power the LCD from apoint-of-load. The only problem is the 10 data wires going to the LED. The serial cable only has 9. Grreness. Any help?

  2. #2
    FLAC evandude's Avatar
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    I don't imagine you'd hear huge interference but it's hard to say for sure.

    are you driving it from the parallel port? or from a microcontroller or something?

    if you're driving it from the parallel port, does the software support 4-bit mode? (it's not exactly significantly harder to program, so many LCD plugins i've seen support it)

    another option is converting the LCD to serial, and running it on only one signal wire but that depends on how much you like microcontrollers.

    http://eegeek.net/electronics/projec...cd_controller/
    But don't take it from me! here's a quote from a real, live newbie:
    Quote Originally Posted by Viscouse
    I am learning buttloads just by searching on this forum. I've learned 2 big things so far: 1-it's been done before, and 2-if it hasn't, there is a way to do it.
    eegeek.net

  3. #3
    Maximum Bitrate KyleYankan's Avatar
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    Quote Originally Posted by evandude
    I don't imagine you'd hear huge interference but it's hard to say for sure.

    are you driving it from the parallel port? or from a microcontroller or something?

    if you're driving it from the parallel port, does the software support 4-bit mode? (it's not exactly significantly harder to program, so many LCD plugins i've seen support it)

    another option is converting the LCD to serial, and running it on only one signal wire but that depends on how much you like microcontrollers.

    http://eegeek.net/electronics/projec...cd_controller/
    My LCD and softwre support 4-bit. Also I know some of microchips, and can program them, unfortunatly, don't know enough code to do it myself. :-(

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