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Abstract: Program power consumption has become as important a performance measure as processing time, even though it is not usually included in program performance measures. For this reason, it is convenient to include in the subjects of the area of architecture and computer technology content related to the energy performance of programs and architectures and to have tools that allow characterizing the power and energy consumed according to the characteristics of the code to be executed. The need to evaluate programs according to their energy efficiency and execution time constitutes a multi-objective approach to performance evaluation that should be introduced in Computer Engineering subjects. In this article we also describe an Arduino-based system that allows obtaining measurements of power and energy consumed in practices and projects that address the generation of optimal codes for a given platform.