Smart Parking System Using Arduino and Ultrasonic Sensors. International Journal of Inventive Engineering and Sciences (IJIES), [S. l.], v. 12, n. 9, p. 22–28, 2025. DOI: 10.35940/ijies.E1102.12090925. Disponível em: https://journals.blueeyesintelligence.org/index.php/ijies/article/view/893.. Acesso em: 7 oct. 2025.