“Perancangan Alat Uji Kadar Air Pada Biji Kopi (Coffea sp) Berbasis Mikrokontroler Arduino Uno” (2024) Journal of Agricultural Engineering and Technology, 2(4). Tersedia pada: https://journal.unram.ac.id/index.php/agent/article/view/9001 (Diakses: 9 Desember 2025).