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Thread: How do I get an analog out to control a blower motor?

  1. #11
    FLAC Chairboy's Avatar
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    Yaarrgh! That was my first suggestion!

    When choosing a speed controller, they'll specify temporary and constant load. The limitation is cooling, if you make sure it's well cooled you should be in good shape.
    Chrysler 300 - Fabricating
    http://hallert.net/

  2. #12
    FLAC WuNgUn's Avatar
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    Quote Originally Posted by Chairboy View Post
    Yaarrgh! That was my first suggestion!

    When choosing a speed controller, they'll specify temporary and constant load. The limitation is cooling, if you make sure it's well cooled you should be in good shape.
    I imagine swapping out the tiny heatsink for a old CPU heatsink, then putting it in the air stream should make everything alright...

    Nice...now I should be able to do my whole HVAC with just a Phidget 4-servo controller.

  3. #13
    FLAC Chairboy's Avatar
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    The reason servo controllers have been on my brain lately is because I've been thinking of the possibilities it provides for motorizing various little doors and cabinets in the cabin of the car. A control panel with a Trunk Monkey or 'Ejection Seat' button it that raises out of the console dramatically....
    Chrysler 300 - Fabricating
    http://hallert.net/

  4. #14
    FLAC WuNgUn's Avatar
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    lol @ dramatically....
    You luxury car guys!!

    Would you even need servo control to 'pop' something open? Just a digital out to a relay/solenoid would work I'd think...

    Looking at some of the 'cheaper' ESC, they come with a one piece heatsink...should be easy to swap.
    I'm sure I could do the hardware on this, but as far as working it from Centrafuse, I'm a total retard...

  5. #15
    FLAC Chairboy's Avatar
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    A relay/solenoid would make it pop out indeed. But a servo means you get the full effect of it slowly rising out like something you'd see in a movie villain's lair. If you're going to do something, you've got to do it with style.

    Most of the ESCs I've bought (I have 3 or 4 I think) have been a small PCB wrapped in a piece of heatshrink tubing. For the loads you're thinking, one with a big heatsink would be necessary for sure. The robot crowd needs beefy speed controllers, you might be able to find something cheap through ze google.
    Chrysler 300 - Fabricating
    http://hallert.net/

  6. #16
    FLAC Chairboy's Avatar
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    Regarding HVAC control, a friend of mine uses one of these USB temp sensors and loves it:

    http://usb.brando.com.hk/prod_detail.php?prod_id=00381

    Or w/ humidity sensor too, great indicator that it's time to toggle the A/C on:
    http://usb.brando.com.hk/prod_detail...015&cat_id=035

    Might be a great option for folks who don't want to take the Phidget route for just one thing.
    Chrysler 300 - Fabricating
    http://hallert.net/

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