In my thesis the operation and functioning of controllers was described. I described the difference between open loop and closed loop systems. The simple ON OFF controller is also discussed in the thesis. PID controllers and all combinations of P, I and D controllers are discussed, as well as the use of controllers and tuning of PID controllers. At the end of first part some problems that usually appear with PID control were mentioned.
The second part of the work is description of the open-source electronics platform Arduino Uno. I mentioned this platform because we can make simple controllers by using Arduino Uno. In this part the basic functionality of the Arduino Uno was described.