Design of a Two-Axis Pointing Sensor System (Azimuth and Elevation) Based on Servo Motors Using HC-SR04 Ultrasonic Sensors as Part of the SEWACO Subsystem : Rancang Bangun Sistem Pointing Sensor Dua Sumbu (Azimut dan Elevasi) Berbasis Servo Motor Menggunakan Sensor Ultrasonik HC-SR04 sebagai Bagian dari Subsistem SEWACO . Procedia of Engineering and Life Science, [S. l.], v. 10, n. 1, p. 701–712, 2026. DOI: 10.21070/pels.v10i1.2943. Disponível em: https://pels.umsida.ac.id/index.php/PELS/article/view/2943. Acesso em: 24 oct. 2026.