Syahri Muharom, and Marcelinus Amalia Lamanele. “Rancang Bangun Mesin Pengering Biji Kopi Berbasis Mikrokontroler Atmega32”. SinarFe7 1, no. 1 (July 17, 2018): 36–41. Accessed May 19, 2024. https://journal.fortei7.org/index.php/sinarFe7/article/view/502.