“Prototype Pintu Otomatis Di PT. Kaltim Nitrate Indonesia Menggunakan Sensor PIR Berbasis Arduino Uno di Masa Pandemi Covid-19 ” (2023) Journal Of Power electric And Renewable Energy, 1(1). Tersedia pada: https://jurnal.stitek.ac.id/index.php/JPER/article/view/52 (Diakses: 1 Juli 2026).