Arduino is not only for hobby projects, there are also good way to use it to semplify your work. This is a good example, submitted by [sspence65].
This is a project I did at work to control two water baths for a process control. Two custom tanks have to be kept at 180F, using DS18b20 temp sensors, an Arduino 2560, 4 SSR’s, and $15 1500 watt electric elements.
On the [website] you can find all about the project, included the code for the Arduino Mega.