This paper describes how to implement a low-cost didactic platform designed to teach or reinforce discrete control theory concepts. The controllers used in this work (P, PI, PD, and PID) are suitable for undergraduate students but the same platform could be used to explain and test advanced controllers to graduate students. This document shows, step by step, how to control a DC motor speed and position, along with the most common problems and its solutions, commonly overlooked in the literature.
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