SMART BLIND STICK USING ARDUINO. International Engineering Journal For Research & Development, [S. l.], v. 6, n. ICMRD21, p. 4, 2021. DOI: 10.17605/OSF.IO/DUZ9X. Disponível em: http://www.iejrd.com/index.php/iejrd/article/view/1798. Acesso em: 19 apr. 2026.