I finally completed my first project that is somewhat useful. I made a yogurt incubator by controlling the temperature in the oven with a heating element (in this case a worklight).
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Yogurt incubator setup. Arduino chip is on bottom right, thermocouple reader is on top right,
relay is on bottom left and outlet controlled by relay is on top left |
Here is a plot of the temperature as a function of time. The arduino is programmed to maintain a temperature of 110 +/- 4.5 degrees F.
Here's a video showing the relay turning on the light when the temperature dropped too low.
