“…Currently electronic devices can already be integrated with computer applications is called Internet of Things (Hartawan & Sudiarsa, 2019) (Ekayana, Hartawan, Desnanjaya, & Joni, 2020). In addition to controlling remotely, current technological developments also make it possible to control the system automatically (Desnanjaya, Iswara, Ekayana, Santika, & Hartawan, 2020). This requires system designers/developers to be able to think logically and mathematically in building/developing systems to solve problems in the industrial world.…”