IOT-Based Automatic Rain-Sensing Umbrella System for Rice Gudon Protection with an Automatic Hot Air Dryer System. International Journal of Engineering & Extended Technologies Research (IJEETR), [S. l.], v. 8, n. 2, p. 2170–2173, 2026. DOI: 10.15662/IJEETR.2026.0802190. Disponível em: https://ijeetr.com/index.php/ijeetr/article/view/596. Acesso em: 22 apr. 2026.