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Multiple Fermenter Temperature Control With Arduino

Temperature control is often considered one of the top five steps towards brewing better beer. There are numerous methods for keeping fermenting wort at the optimum temperatures from wrapping a carboy in a blanket to keep it warm in the winter to a wet towel to keep the carboy cool in the summer. One of the challenges a fellow brewer and I encountered was how to keep two different sized carboys warm during the winter. Most fermentation temperature controllers available through the local homebrew shops have only a single temperature probe and one electric switch.”

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