Experimental Autotuning proportional-integral-derivative (PID) Temperature Control of Oven Using Microcontroller is presented in this paper. Different types of autotuning PID controller methods have been applied to the oven designed as an experiment set. This experiment set is an FODPT (First Order Plus Dead Time) system. Relay (PI, PID) and integral square time error criterion (ISTE) set point (PI, PID) are used as autotuning PID method. To be able to control this system a digital signal processing card is designed using PIC 17C44 as microcontroller and ADS1212 as AID converter. And the results are discussed to define which controller is the best for the oven.