Earthquake Alert: Development of an ESP32-Based Early Warning System Prototype using MPU6050 and SW-420 Sensor. EPSILON: Journal of Electrical Engineering and Information Technology, [S. l.], v. 24, n. 1, p. 15–27, 2026. DOI: 10.55893/epsilon.v24i1.161. Disponível em: https://epsilon.unjani.ac.id/epsilon/article/view/161. Acesso em: 6 jul. 2026.