Code, slides, abstract and raw data for invited talk presented at the satRday Conference in Belgrade on October 27, 2018 (https://belgrade2018.satrdays.org/). File EMGpectoralis.txt contains raw sample data recorded for educational purposes at the University of Belgrade - School of Electrical Engineering and used for TOBS course with topics on biomedical data analysis with R programming. Additionaly, EMGpectoralis.txt has header with info on electromyography (EMG) data.