1. Department of Electrical Engineering, Faculty of Industrial Technology , Universitas Ahmad Dahlan , Unit IV, Jl. Ringroad Selatan, Kragilan, Tamanan, Banguntapan, Bantul Regency, Special Region of Yogyakarta 55191 , Indonesia
2. Public Health Science Study Program, Faculty of Public Health , Universitas Ahmad Dahlan , Unit III, Special Region of Yogyakarta 55191 , Indonesia
3. Department of Agro-industrial Technology, Faculty of Science and Technology , University of Darussalam Gontor , Ponorogo , Indonesia