AL-SAADI, Hassan A.; MOHSEN, Mohanad R. Leveraging Arduino for Automated Bell Ringing to Optimize Time and Effort in Schools. International Journal of Scientific Research and Modern Technology, India, v. 4, n. 8, p. 18–24, 2025. DOI: 10.38124/ijsrmt.v4i8.720. Disponível em: https://www.ijsrmt.com/index.php/ijsrmt/article/view/720. Acesso em: 4 may. 2026.