Smart Tools for Smart Learning: IoT-Based Landslide Early Warning System with TILT Sensors and AppsSiska Desy Fatmaryanti, Yusro Al Hakim, Sugeng Eko Putro Widoyoko and Raden Wakhid AkhdinirwantoE3S Web Conf., 622 (2025) 03001DOI: https://doi.org/10.1051/e3sconf/202562203001