Erianto, Zulhegi, and mardainis mardainis. “Sistem Keamanan Pintu Ruangan Berbasis Mikrokontroler Atmega328 Dan Pattern Unlock Smartphone Android”. SATIN - Sains dan Teknologi Informasi 4, no. 2 (January 22, 2019): 41-48. Accessed December 28, 2024. http://register.stmik-amik-riau.ac.id/index.php/satin/article/view/412.