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Thread: Sensor Inputs (non-ecu)

  1. #11
    Constant Bitrate
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    south GA
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    Quote Originally Posted by Dragpack View Post
    I hope you can help with this one please.

    I am restoring a 69 Mustang with a carb engine (so no engine ECU etc). I have installed a computer and screen etc, but would like to get some extra information from the engine into the computer for display on the frontend.

    I obviously have the Speedo on the screem (via GPS), but would like mainly to add the oil preasure, various water temp readings from various water sensors, perhaps an outside air temp, maybe also add (while I am doing this) an amp/voltage meter etc.

    Any ideas? I have USB, serial AND parallel ports on the laptop, so any type of connection can be done, but I have NO idea of how to do this or what frontend to use to view the data.

    Many thanks in advance. Please reply as if I were an idiot and you wouldn't be far wrong!

    Mick . . .
    any updates on your 69?
    69 Mustang
    408 clevor AFD 2v heads - Viper T56
    Audio:RUX-C701, PXA-H701, MRV-F545, (2) MRD-M1005, SIR-SC-H1, DMHD1000, Dayton Audio: (2) RS180-4, (2) RS28F-4, (2) RSS265HO-44 DVC

  2. #12
    Newbie
    Join Date
    Jul 2008
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    21
    hi there,
    i wish to do the same thing in my van,
    i have heard of dakota digital dashes, they look great, but i was enquiring because i might want to create my own dash, speedo tacho, etc, on a computer screen, that i will build into my space left, where i threw out my existing dash, as it was garbage, could not see it at night, and hard to see in day as well,
    so if it is too hard to do with car pc, i will get a dakota digital dash,
    hope it helps,
    cheers
    fbear

  3. #13
    Fusion Brain Creator 2k1Toaster's Avatar
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    Nothing stopping you from going the CarPC route. If you do there are many options.

    If you are having trouble seeing the screen because of sunlight, then you will probably want a transflective screen which are $$$ but you dont want to spend all this money and get something you cant see.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  4. #14
    Newbie
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    Jul 2008
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    21
    hey thanks for that k1toaster,
    i have been looking thru this site for hours and hours, and i must say, what a great site!
    but i am finding it all a bit daunting,, as far as choosing any particular car pc, and then truble finding everything one would need to put it all together?
    maybe after months of studying, and learning about all the possibilities, i might consider it?
    their are just too many options, and it is far 2 confusing!
    great to have consumer choice?
    i suppose,
    thnks though for your time
    fbear

  5. #15
    Variable Bitrate Grrrmachine's Avatar
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    My carburetted engine has two sensors (oil temp and oil pressure) which I would love to convert to digital. If I'm right, they both work on wire resistivity (the oil temp is a lump of metal which, as it heats, increases/decreases the resistance of the single wire coming from it.) Has anyone come across any Phidgets or FusionBrain or similar devices that can convert this to the CarPC?

  6. #16
    Fusion Brain Creator 2k1Toaster's Avatar
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    Quote Originally Posted by Grrrmachine View Post
    My carburetted engine has two sensors (oil temp and oil pressure) which I would love to convert to digital. If I'm right, they both work on wire resistivity (the oil temp is a lump of metal which, as it heats, increases/decreases the resistance of the single wire coming from it.) Has anyone come across any Phidgets or FusionBrain or similar devices that can convert this to the CarPC?
    Called a resistor.

    To get a resistive sensor to become a voltage, just slap on a resistor from sensor output to ground, and measure between the resistor and sensor into the Fusion Brain.

    Code:
      Sensor
        |
        |
        x----- Fusion Brain (Read in as Voltage)
        |
       <
         >  Resistor
       <
        |
      Ground
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  7. #17
    Variable Bitrate Grrrmachine's Avatar
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    Yeah, I've now done a lot of reading about the Fusion Brain and it makes a lot of sense to use that method to start with and then see what else it can do I just didn't know what I was searching for to start with - thanks for the tip!

  8. #18
    Fusion Brain Creator 2k1Toaster's Avatar
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    No problem. If you want a search term to go off of, what that resistor does is called a "voltage divider".

    English: http://en.wikipedia.org/wiki/Voltage_divider

    Polish (I hope): http://pl.wikipedia.org/wiki/Dzielnik_napi%C4%99cia
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  9. #19
    Variable Bitrate Grrrmachine's Avatar
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    Warsaw, Poland
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    346
    That made good reading (in both languages!) and it seems like this is the beginning of a serious project. For those of us with older cars though, how would you measure things like RPM? GPS gives speed, fuel level another voltage divider I presume, but RPM? There's so many types on older pre-OBD cars (cables, magnets, reed switches)...

  10. #20
    Fusion Brain Creator 2k1Toaster's Avatar
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    There should be a tachmeter wire for your speedometer that sends out pulses. You can get a frequency to voltage chip for cheap and do it that way.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

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