Arduino Food & Beverage
Dual Stage Heating/Cooling Temperature Controller with RGB Display

I am probably flattering myself, taking any sort of credit for inspiring this sweet custom temperature controller built by Adafruit reader Mike to keep his beer-brewing fridge at a constant temperature. Like my recent project, it simultaneously controls AC-powered heating and cooling equipment to maintain a constant temperature, and is mounted in a hardware-store PVC junction box. But there the similarities pretty much end. Whereas I used a cheap off-the-shelf thermostat module from China, Mike built and programmed his own controller using an Arduino for brains, an Xbee for remote temperature control and data logging, and a cool multicolor LED display with letters that turn red when the system is heating, blue when it is cooling, and green when it is at the correct temperature. [Thanks, Tom!]

Jake’s Laser-Cut Sous Vide Controller

2 thoughts on “Dual Stage Heating/Cooling Temperature Controller with RGB Display

  1. This has enormous potential, not only for brewing, allso for keeping water at temperature, adjust indoor growspace temperature, if i understand it right, it could be a thermostat for the house too, with a few addons offcourse… i am very interested te hear more on this project

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I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and My work has also appeared in ReadyMade, c't – Magazin für Computertechnik, and The Wall Street Journal.

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