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Thread: Tutorial/Documentation Requests

  1. #21
    Variable Bitrate rEegLer's Avatar
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    DC 12v fan control

    I searched and searched and couldn't find anything but with the MOSFET board, how do you control fan speeds through PWM with a 12v computer fan? I can do it with a PIC but I'm not sure how to do it with the FB and MDX.

    Thanks!
    Love

  2. #22
    Low Bitrate UniqelyCommon's Avatar
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    From what I understand the Fusion Brain can supply up to 400mA per output channel. I fan I have here by my computer says its rated for 0.4A (400mA). In my inexperience it would seem that my no-frills fan would likely trip the fuse/breaker with any little bit of variance (fan or Fusion Brain or power to the Brain). :/ I would think the MOSFET board would be the way to go...

  3. #23
    Low Bitrate UniqelyCommon's Avatar
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    Ah, I checked my Cooler Master 120mm fan and it uses 0.16A (160mA), which is obviously under 400mA
    I'd say it depends on the fan.

  4. #24
    Variable Bitrate rEegLer's Avatar
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    Right, I have run fans from the FB before but I'd like to control the speed simply through an analogue voltage output (PWM). With the MOSFET board, how do you 'program' it in MDX to do it is my question.
    Love

  5. #25
    Fusion Brain Creator 2k1Toaster's Avatar
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    Hardware wise, you can just hook it up directly. Power it off of the pins, and the ground is switched, modulating the speed.

    Programming wise:

    Software PWM:
    <iochannel id="Digital Output 0" port="15" brain="my fusion brain 0" type="digital_output">
    <defaults defaultstate="off"></defaults>
    <options mode="standard">
    <pulse duty_cycle="50" period="XX"></pulse>
    </options>
    </iochannel>

    Hardware PWM:
    <iochannel id="Digital Output 0" port="15" brain="my fusion brain 0" type="digital_output">
    <defaults defaultstate="off"></defaults>
    <options mode="pwm">
    <pulse duty_cycle="50" period="XX"></pulse>
    </options>
    </iochannel>
    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

  6. #26
    Low Bitrate
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    any update on the HVAC controlls by chance? I've had my fusion brain 6 for almost 2 years now. still have no clue what I'm doing. lol

  7. #27
    Maximum Bitrate Dave One's Avatar
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    Is there a version 6 manual and basic setup guide? I really want to integrate this but seem to having trouble grasping the basics atm .

    The plan is to integrate with RideRunner, use temp sensor/light/g-sensor inputs and monitor steering wheel/remote input controls......

    I really don't want to be asking as I normally manage to 'plough on' and eventually get my head around it!

    Thanks,
    Dave
    Vauxhall Astra SXi Car PC installed.

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