Sistem Peringatan Dini Banjir Dengan Menggunakan ESP32 dan Sensor Ultrasonik. Journal of Students‘ Research in Computer Science, [S. l.], v. 7, n. 1, p. 73–84, 2026. DOI: 10.31599/3ymf3266. Disponível em: https://ejurnal.ubharajaya.ac.id/index.php/JSRCS/article/view/5458.. Acesso em: 4 jun. 2026.