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Thread: HVAC Control on Car PC through Serial Port.

  1. #201
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    Looks very good... I'm just trying to see if my car is compatible since the AC (ON and MAX) is on the same rotary knob as the vent location...

    My car has temperature, vent location, and fan speed knobs. The temperature one I hook up to the "heat" servo, and the vent location I hook up to the 'vent location' servo. For fan speed, it looks like I'll have to use my DMM to figure out which wire is used for which fan speed. What torque servo would we need? I mean, looking at phidgetsusa.com , I see servos from $20 to >$80.. Thanks!

  2. #202
    FLAC Mastero's Avatar
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    Quote Originally Posted by WxGuy1
    Looks very good... I'm just trying to see if my car is compatible since the AC (ON and MAX) is on the same rotary knob as the vent location...

    My car has temperature, vent location, and fan speed knobs. The temperature one I hook up to the "heat" servo, and the vent location I hook up to the 'vent location' servo. For fan speed, it looks like I'll have to use my DMM to figure out which wire is used for which fan speed. What torque servo would we need? I mean, looking at phidgetsusa.com , I see servos from $20 to >$80.. Thanks!
    You will also have the re circulation .. The easy way to find the fan speed is the thickest wire is the max speed ...

    And as for the torque i wont be able to say ... every vehicle is different and i would have to check each and every to know which is the best ... you can check the flap movement and will have to make your own judgement.

    Cheers
    Mastero

  3. #203
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    Mastero, I just read the manual, it's very nice. A question though. What is comming out of the fan speed connections? My fan is steered by a resistor devided circuit. The fan is connected directly to +12V. The other side is connected to 3 resistors in series and each junction between the resistors is connected to ground, getting 4 speeds this way. Highest speed is fan connected directly to +12V and ground (offcourse). Is it possible to join your fan speed connections C, D and E together and connect them directly to the fan motor ? If so, to which side, +12V or ground?
    Car : Hyundai Tucson
    Carpc :
    Lilliput 7" touchscreen indash 90% done
    PSU : M2-ATX
    Epia M10K /512DDR/80GB Maxtor
    Software : Windows XP Pro 100% done
    RR with DigitalFX skin
    In car : 80% done

  4. #204
    Variable Bitrate markland556's Avatar
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    So how is the vent location giong to work with an electrical based system. I am going to be gone for a week and ill borrow my dads book about the wiring for my car and write down everything i need. As i am not sure how my cars A/C works exactly, i know everything is electrical. Also why make it so you have to turn off the unit before you exit. I know i will want my A/C going and still be able to get to my frontend and change songs, ect..
    Also on my car i have 3 fan speeds as follows: low, high and auto. How will the auto work?
    96' Mercedes Benz C36 -Matte Black-
    Status..::... {##------}25%~~ back to planning

  5. #205
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
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    I gotta have one of these....

  6. #206
    FLAC Mastero's Avatar
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    Quote Originally Posted by gyro
    Mastero, I just read the manual, it's very nice. A question though. What is comming out of the fan speed connections? My fan is steered by a resistor devided circuit. The fan is connected directly to +12V. The other side is connected to 3 resistors in series and each junction between the resistors is connected to ground, getting 4 speeds this way. Highest speed is fan connected directly to +12V and ground (offcourse). Is it possible to join your fan speed connections C, D and E together and connect them directly to the fan motor ? If so, to which side, +12V or ground?
    The fanspeed connections are giving 12v or direct battery.

    So instead of having them give 12v lets make them give ground they are just relays... a little mod will have things going .. and you shall have ground on all three fan modes so when the unit changes fan it just gives ground to the resistors. shall post the pcb top and back for an idea.

    Cheers
    Mastero

  7. #207
    FLAC Mastero's Avatar
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    Quote Originally Posted by markland556
    So how is the vent location giong to work with an electrical based system. I am going to be gone for a week and ill borrow my dads book about the wiring for my car and write down everything i need. As i am not sure how my cars A/C works exactly, i know everything is electrical. Also why make it so you have to turn off the unit before you exit. I know i will want my A/C going and still be able to get to my frontend and change songs, ect..
    Also on my car i have 3 fan speeds as follows: low, high and auto. How will the auto work?
    For anysystem for the vent location you will have to find the flaps which controlls them.

    If your using the software from RR then you can minimise it. if you dont exit and close the software then when you start the software again and press the on button the unit will go off.. ! There is a vb6 files just add the minimise button ... so your all set.

  8. #208
    Variable Bitrate markland556's Avatar
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    so im going to have to use a servo to do them all? cant just make some sort of circuit that uses the signal wire to pick what wire to power?
    96' Mercedes Benz C36 -Matte Black-
    Status..::... {##------}25%~~ back to planning

  9. #209
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
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    my car already has factory servos that control the flaps, but they are 12 volts.... can I run the original servos through this unit?

  10. #210
    Variable Bitrate markland556's Avatar
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    use a relay
    96' Mercedes Benz C36 -Matte Black-
    Status..::... {##------}25%~~ back to planning

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