Construction Of Railway Door Automation Prototypes Using Arduino, Servo Motors and Ultrasonic Sensors : Konstruksi Prototipe Otomatisasi Pintu Kereta Api Menggunakan Arduino, Motor Servo, dan Sensor Ultrasonik. Digital Zone: Jurnal Teknologi Informasi dan Komunikasi, [S. l.], v. 14, n. 1, p. 1–12, 2023. DOI: 10.31849/digitalzone.v14i1.13584. Disponível em: https://journal.unilak.ac.id/index.php/dz/article/view/13584. Acesso em: 6 nov. 2026.