DC motors are used in a wide range in many engineering applications since are inexpensive compared to servo motors. In order to achieve precise positioning, DC motors are difficult to control, so in applications where precise positioning is required, servo motors are used. This research aims to build a program for precise control for DC micro motors to be actuated for precise positioning. For this, an inexpensive magnetic encoder was attached to the shaft at the end of the DC micromotor, and the control program used the Proportional-Integral-Derivative (PID) algorithm and a low-pass filter used for cut the frequency in speed control, allowing for smooth and precise positioning. In order to be able to actuate the DC micromotors in an easy way, the user interface was created with the help of the Visual Studio development program, and for the communication amongst microcontroller and computer, a communication protocol(serial) was developed in which the data transmission is done in a short period of time.

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