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Arduino temperature controller

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  • Arduino temperature controller

    Has anyone on the forum built a temperature controller with an Arduino?

    I do have a STC1000 but have been playing around with the idea of building cellaring chambers for wine and beer with an Arduino and peltier chips.

    The Arduino is quite powerful and one chip would be capable to run 6 control loops (I think).
    Primary: APA
    Bottled: Quad, tripel, K@K red ale
    Keg 1: Weiss. 2: Weiss. Keg 3: Air. Keg 4: Air
    Next up: world domination

  • #2
    Hi DieBaas,

    I have built one that uses the code and design idea from https://learn.adafruit.com/sous-vide...e-sous-viduino but it is more like a pid than a fermentation chamber controller. With the temperature probes it uses, you can have multiples connected on the same line. I built mine into a box but haven't actually used it yet!

    There is lots of info online for the brewpi, that uses the Raspberry Pi as it's base, with a web server to monitor fermentation temps.
    CapeTownBrew
    Senior Member
    Last edited by CapeTownBrew; 14 July 2015, 09:17.
    bluemountainbrew.co.za



    Primary:
    Secondary: Apple & Cranberry Wine, Strawberry Wine, Mead,
    Conditioning:
    Bottled/Kegged: Black Ale/BIPA (SYSF)
    Next Up:​ ?Chocolate Peanut Butter Stout?

    Comment


    • #3
      I would like to have another one as a PID controller as well

      Thanks for the link. Where did you buy the hardware?
      Primary: APA
      Bottled: Quad, tripel, K@K red ale
      Keg 1: Weiss. 2: Weiss. Keg 3: Air. Keg 4: Air
      Next up: world domination

      Comment


      • #4
        Originally posted by DieBaas View Post
        Where did you buy the hardware?
        A lot of it from Adafruit and ebay but some of it is available from local suppliers. I will try to remember to post pics of the completed box when I get home.
        bluemountainbrew.co.za



        Primary:
        Secondary: Apple & Cranberry Wine, Strawberry Wine, Mead,
        Conditioning:
        Bottled/Kegged: Black Ale/BIPA (SYSF)
        Next Up:​ ?Chocolate Peanut Butter Stout?

        Comment


        • #5
          I used 4 x peltier chips mounted on aluminum pads that I ground to fit the curvature of a 25l glass carboy . The carboy came in a polystyrene box that I cut holes in to allow the peltier chips and heat sinks to be strapped tightly to the glass. I managed to get and hold 12 deg c when ambient was 25 deg C . Power consumed was probably far more than a fridge . I used 12v 60w units . Mine operated best at 12,8 volts , anything more or less and the temp's went up . Two peltiers running together were not enough to maintain temp . The one item that made the biggest difference to performance was the conductivity paste .
          If you are still keen on trying the peltier route I have 4 x chips and 4x heatsinks ( 12v ) and a tube of thermal paste we can trade for something . I also have a raspberry pi for sale if you are interested with a 2.8" tft screen
          If you see spelling mistakes in my posts, use as many of the goodies below as required to fix it!
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          abcdefghijklmnopqrstuvwxyz0123456789

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          • #6
            I built an arduino based temp controller for a fridge when I was living in Canada. Would have been cheaper to by an STC1000 but it was a fun project regardless

            BrewPi would be rad!

            Comment


            • #7
              Originally posted by defender110 View Post
              I used 4 x peltier chips mounted on aluminum pads that I ground to fit the curvature of a 25l glass carboy . The carboy came in a polystyrene box that I cut holes in to allow the peltier chips and heat sinks to be strapped tightly to the glass. I managed to get and hold 12 deg c when ambient was 25 deg C . Power consumed was probably far more than a fridge . I used 12v 60w units . Mine operated best at 12,8 volts , anything more or less and the temp's went up . Two peltiers running together were not enough to maintain temp . The one item that made the biggest difference to performance was the conductivity paste .
              If you are still keen on trying the peltier route I have 4 x chips and 4x heatsinks ( 12v ) and a tube of thermal paste we can trade for something . I also have a raspberry pi for sale if you are interested with a 2.8" tft screen
              I only need the peltier to offset changes to the environment not active fermentation. I'll still use the STC for that. Maybe later hook up another arduino with a PID control loop when I'm more comfortable with the technology. PM me with the price for the PI and peltiers. I need a PI for a XBMC media client to keep SWMBO busy while I'm thinking beer


              Originally posted by Stefan View Post
              I built an arduino based temp controller for a fridge when I was living in Canada. Would have been cheaper to by an STC1000 but it was a fun project regardless
              BrewPi would be rad!
              If you are planning on only controlling one chamber the STC is cheaper. But I'm thinking big. 2-3 boxes to age wine and another 2-3 for long term beer storage.

              Have you seen the BrewPi Spark? That is nice brewporn
              Primary: APA
              Bottled: Quad, tripel, K@K red ale
              Keg 1: Weiss. 2: Weiss. Keg 3: Air. Keg 4: Air
              Next up: world domination

              Comment

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