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VVW board

Discussion in 'All Things Mod Making' started by doobedoobedo, Jul 27, 2015.

  1. doobedoobedo

    doobedoobedo Postman

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    A variable, variable wattage board. Wattage adjustment available depends on the battery spec and the coil resistance. It can run off 2S or 3S. Power is regulated with PWM.

    Ignore the box it's very crude.

    [​IMG]

    No explosion at 450W (1000mAh 3S 45C LiPo)
    [​IMG]
    [​IMG]
     
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  2. erndub

    erndub Postman

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    What board is it?
     
  3. doobedoobedo

    doobedoobedo Postman

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    It's mine. I used an atmega328p MCU, PWM is 122.55Hz.

    I did have temp control but it needs a minimum of 16 PWM cycles to get all the readings and as the wick dries out it can't put low enough voltage through to stop the coil from overheating :(.

    This is one partially assembled. The screen goes over the top of the MCU. I'm still putting the finishing touches to the firmware.

    [​IMG]
     
  4. tonystr

    tonystr Postman

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    I somehow missed this. Dude you're smart:)
     

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