ARREGOCÉS JULIO, I. Motion detection system with ultrasound sensor and Arduino to control the capacity of tourists. CESTA, [S. l.], v. 3, n. 2, 2022. DOI: 10.17981/cesta.03.02.2022.02. Disponível em: https://revistascientificas.cuc.edu.co/CESTA/article/view/4092. Acesso em: 15 apr. 2026.