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Thread: Are the Digital Inputs Active?

  1. #11
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    I have a question then. Can the firmware be re-written to use the digital inputs as analog. I need two more inputs and was planning on using the digitals.

  2. #12
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    Quote Originally Posted by RonS View Post
    I have a question then. Can the firmware be re-written to use the digital inputs as analog. I need two more inputs and was planning on using the digitals.
    No, it's a limitation of the board, if I remember correctly. The board can only handle 13 analog inputs, and only on certain pins. I'll check when I get home.

  3. #13
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    Ok thanks. I am going to get one of the new ones when they come out anyway. For right now I can do without the air fuel.

  4. #14
    Maximum Bitrate Woofnstuff's Avatar
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    so to use them..

    what size resistor would you suggest if you wanted to use a switch?

    also i guess you will need to have the digital inputs code somewhere else and copy / paste it back into the .xml file each time you open the config and change anything?

    as a thought could you treat them like a plugin or 3rd party item and refere to a 2nd .xml file just for the digital inputs

  5. #15
    Constant Bitrate mx270a's Avatar
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    I think you can get away with a very high resistance, as you're just pulling the line to a voltage, and there shouldn't be any load on that line. I'd guess a 100K ohm resistor would be sufficient. I think you want to pull the sensed line to ground with that resistor, then put a switch between the sensed line and +5v. That way the input is normally grounded unless you press the switch, which pulls the input up to 5v.

  6. #16
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    I tried a 470K resistor and it didn't work.
    Nick told me to try something lower, like 470 ohms.
    I'll get to that tomorrow sometime.

  7. #17
    Maximum Bitrate Woofnstuff's Avatar
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    if you get it working can you post up a spoon feed of what you did.
    as info seems to be pretty limited.

    im starting to compile my own dummies getting started guide as i blunder my way thru it bit by bit,
    while there is alot of info about, it seems to assume you have it running and know how to program it to a degree.

    having said that i can see the guys are going flat out making it more first time user friendly, with things like ninja kitty (which i got working yay)

  8. #18
    Maximum Bitrate Woofnstuff's Avatar
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    just a pointer to an update on this

    http://www.mp3car.com/vbulletin/docu...ml#post1247202

    thanks guys

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