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Thread: HVAC Control on Car PC through Serial Port.

  1. #211
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
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    servos aren't on off devices.....

  2. #212
    Variable Bitrate markland556's Avatar
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    i mena just for power. So when the HVAC unit turns on it powers a relay and powers the servo. Then the signal wire goes strait to it.
    96' Mercedes Benz C36 -Matte Black-
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  3. #213
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
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    but wouldn't it expect a 12v signal too?

  4. #214
    Variable Bitrate markland556's Avatar
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    hmm, not really 100% sure. kinda make sense in my mind but i got my own problems. I dont wanna use servos at all. why go from electrical to mechanical. I just dont wanna use a servo.
    96' Mercedes Benz C36 -Matte Black-
    Status..::... {##------}25%~~ back to planning

  5. #215
    FLAC Mastero's Avatar
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    Quote Originally Posted by turbocad6
    my car already has factory servos that control the flaps, but they are 12 volts.... can I run the original servos through this unit?
    If you can find out what the signal voltage is then you can make some mod and use it

  6. #216
    Constant Bitrate
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    This isn't my car, but I have a corolla with the same air-con controls: http://www.corollaperformance.com/Mo...r/WoodDash.jpg

    The inside/outside is a cable, the position (face/feet/etc) is cable, and the temp is cable too. The fan speed is electric, and the aircon on/off is electric.

    I'm not sure if I want to go a pc based one, as I don't have a car puter yet, but I wouldn't mind converting them to electric (using PICAXE or PICs). Would it be possible?

  7. #217
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
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    working on finding out details about my factory servos... if this works I'm ordering one...

  8. #218
    FLAC Mastero's Avatar
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    Quote Originally Posted by birdie
    This isn't my car, but I have a corolla with the same air-con controls: http://www.corollaperformance.com/Mo...r/WoodDash.jpg

    The inside/outside is a cable, the position (face/feet/etc) is cable, and the temp is cable too. The fan speed is electric, and the aircon on/off is electric.

    I'm not sure if I want to go a pc based one, as I don't have a car puter yet, but I wouldn't mind converting them to electric (using PICAXE or PICs). Would it be possible?

    Yes it can be possible.

  9. #219
    FLAC Mastero's Avatar
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    Quote Originally Posted by turbocad6
    working on finding out details about my factory servos... if this works I'm ordering one...
    Just use a DMM and find out what is the voltage on the signal wire ... but i doubt they are servos they will be acutators.... meaning only two wires ...

    But still check it

    Mastero

  10. #220
    Constant Bitrate
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    Quote Originally Posted by Mastero
    Yes it can be possible.
    Can you elaborate? How?

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