Xixi, Chrysoula, Argyro Vlachodimitropoulou, Georgia Stathopoulou, Andreas Panagiotou, Panagiotis Papastathakopoulos, and Sarantos Psycharis. “Electric Signals in Machine Learning Using AppInventor and Arduino”. European Journal of Engineering and Technology Research 1, no. CIE (December 29, 2023): 1–7. Accessed July 6, 2024. https://ej-eng.org/index.php/ejeng/article/view/3131.