Safitri, Ismiy, Apriansyah Apriansyah, and Kemas Muhammad Wahyu Hidayat. “Arduino Uno-Based Automatic Hand Soap Dispenser Using Ultrasonic Sensors for Hand Hygiene”. International Journal of Multidisciplinary Sciences and Arts 5, no. 4 (October 16, 2026): 852–858. Accessed November 12, 2026. https://jurnal.itscience.org/index.php/ijmdsa/article/view/9738.