Andriani, Titi, Muhammad Hidayatullah, and Muhammad Ikbal. “Rancang Bangun Sistem Keamanan Menggunakan Sensor Passive Infra Red (PIR) Dilengkapi Kontrol Pendingin Ruangan Berbasis Arduino Uno Dan Real Time Clock”. JURNAL ILMU FISIKA 10, no. 2 (October 22, 2018): 94–102. Accessed July 3, 2024. http://jif.fmipa.unand.ac.id/index.php/jif/article/view/239.