“RANCANG BANGUN SISTEM KEAMANAN KUNCI PINTU LEMARI BERBASIS MIKROKONTROLER”. JOURNAL OF SCIENCE AND SOCIAL RESEARCH 3, no. 2 (August 28, 2020): 109–115. Accessed August 2, 2026. https://goretanpena.com/jurnal/index.php/JSSR/article/view/427.