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Thread: DIY Temperature Compensation Metronome

  1. #1
    s2art's Avatar
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    DIY Temperature Compensation Metronome

    Hi folks, I hope I'm not doubling up here but I recently found a page that has instructions for making software for a Zone VI temperature compensation metronohttps://gitbucket.tundraware.com/tundra/devtimer/tree/Version-1.00
    I am not fluent enough to be able to decipher the instructions and my own timer still works, so I'm putting this out there for others to find and use if needed.
    Maybe someone could have a look and determine what is needed to make the whole thing?

  2. #2

    Join Date
    May 1999
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    496

    Re: DIY Temperature Compensation Metronome

    IME, LED light sources doesn`t need compensation at all. It`s easier to turn to LED than to mess with obsolete tube based sources.

  3. #3

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    Re: DIY Temperature Compensation Metronome

    It's not for LED light, it's for developer tray or tank !

  4. #4

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    Re: DIY Temperature Compensation Metronome

    Ooops, my excuses. Anyway, same idea. Isn`t it much easier to check a chart?

  5. #5

    Join Date
    Jun 2013
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    Re: DIY Temperature Compensation Metronome

    Quote Originally Posted by jose angel View Post
    IME, LED light sources doesn`t need compensation at all. It`s easier to turn to LED than to mess with obsolete tube based sources.
    I would not bet my print quality on that. There is a temperature dependence of LED properties (voltage-current curve, lumens-current curve) versus temperature. General characteristics for nominal conditions are listed for a nominal junction temperature, and there is a time constant (several probably) associated with the transient thermal response at turn-on, dependent of course on heat-sinking.
    Such time constants, if you allow an educated guess, probably lie between 1/10 and 1s. Too short to be a matter of concern? Possibly. But I see some f-stop timers having increments of 1/12 stop and what not. So what is significant?

    This said, I agree 100% with:
    It`s easier to turn to LED than to mess with obsolete tube based sources.

  6. #6

    Join Date
    Jun 2017
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    Oceanside, California
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    Re: DIY Temperature Compensation Metronome

    I ordered all the parts (less than $50) to build this timer and I'm in contact with Tim, the guy who develop this project.
    I'll let you know soon

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