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Thread: Picaxe based Aircon digitiser

  1. #1
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    Picaxe based Aircon digitiser

    My car, a toyota corolla 97 model, has manual cable operated aircon co trols except the fan speed which is a switch.
    Now I would like to convert the other three to electronic too.
    What I'm thinking of doing is to build a circuit that has a picaxe probably a 18x if it has enough ports, with 3 servos to digitise the cable operated ones. now the hardest part is going to be the inputs to control these servos. the temp is a variable thing so it needs a knob/slide with no positions. the vent direction could be converted to a push switch for open close though mine has 3 positions open 1/2 closed, so i'm not sure if i'd worry about the 1/2 position. and finally the vent direction, eg face, feet, etc

    now i'm not sure what i'll use for user input, but i was thinking of using a mono nokia lcd with backlight for displaying fan speed, temp, etc with icons would be great.

    is this all doable with a picaxe? has anyone done this before to save me some work?

  2. #2
    Variable Bitrate 4u2n's Avatar
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    Quote Originally Posted by birdie
    My car, a toyota corolla 97 model, has manual cable operated aircon co trols except the fan speed which is a switch.
    Now I would like to convert the other three to electronic too.
    What I'm thinking of doing is to build a circuit that has a picaxe probably a 18x if it has enough ports, with 3 servos to digitise the cable operated ones. now the hardest part is going to be the inputs to control these servos. the temp is a variable thing so it needs a knob/slide with no positions. the vent direction could be converted to a push switch for open close though mine has 3 positions open 1/2 closed, so i'm not sure if i'd worry about the 1/2 position. and finally the vent direction, eg face, feet, etc

    now i'm not sure what i'll use for user input, but i was thinking of using a mono nokia lcd with backlight for displaying fan speed, temp, etc with icons would be great.

    is this all doable with a picaxe? has anyone done this before to save me some work?
    I have use the small PICAXE 08M in my shutdown controller and it work fine

    The PICAXE is wery easy to get work,

    I wish you good lock witch you project

    I work on 3 other projet where i use a PICAXE processer

    If you to know some thing about PICAXE search on GOOGLE and you will find lot of stof
    Plan for project = 100%
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  3. #3
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    does the 'axe have enough memory to hold the code to do all that?

  4. #4
    Variable Bitrate 4u2n's Avatar
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    Quote Originally Posted by davesaudio2
    does the 'axe have enough memory to hold the code to do all that?
    Yes, the X version have space for 600 basic programs line

    and it can control EEprom to store data in

    Try to look at it ..
    Plan for project = 100%
    Part the project. = 100%
    Built...................= 99%
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  5. #5
    Maximum Bitrate starfox's Avatar
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    Yeah PICAXE is good for small things like this, fast and easy to develop and they're quite robust. They also don't need a special programmer.

    The only problem I can see is that you'll need to interface with that LCD somehow.. Picaxes can talk to HD44780 based LCDs quite easily, but what controller does that Nokia use?

  6. #6
    Variable Bitrate 4u2n's Avatar
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    Quote Originally Posted by starfox
    Yeah PICAXE is good for small things like this, fast and easy to develop and they're quite robust. They also don't need a special programmer.

    The only problem I can see is that you'll need to interface with that LCD somehow.. Picaxes can talk to HD44780 based LCDs quite easily, but what controller does that Nokia use?
    If you search on the internet then you lot of place where you can use the picaxe

    You control the picaxe nearly same way as normal pic

    And a very good thing is if you start witch one of the small once and the project grow you change the picaxe size and the pin to the new one, the en run
    Plan for project = 100%
    Part the project. = 100%
    Built...................= 99%
    Finish.................= 99%
    Install ...............= 99% -50%
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  7. #7
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    help me better understand, when I see a guy who can etch boards I wonder why he prefers the axe over a pic?
    a few resistors makes a jdm programmer, free HLLs exist, lots of code available ...
    curious Dave

  8. #8
    Variable Bitrate 4u2n's Avatar
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    Cool

    Quote Originally Posted by davesaudio2
    help me better understand, when I see a guy who can etch boards I wonder why he prefers the axe over a pic?
    a few resistors makes a jdm programmer, free HLLs exist, lots of code available ...
    curious Dave

    Fart to make program without to know some thing about asm.

    Make the program in block diagram press 1 bottom to make it to basic on press more and you download it to the PICAXE

    try to check it out on this link

    http://www.rev-ed.co.uk/picaxe/
    Plan for project = 100%
    Part the project. = 100%
    Built...................= 99%
    Finish.................= 99%
    Install ...............= 99% -50%
    Ditail at 4u2n.dk
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