Firhan Ali, Husnul Khair, Imeldawaty Gultom. Design Of Automatic Hand Sanitizer Spray System Based On Arduino Uno Using Fuzzy Logic Method. IJHET [Internet]. 2022 Jul. 31 [cited 2024 Oct. 2];1(2). Available from: https://afdifaljournal.com/journal/index.php/ijhet/article/view/32