Z. R. Tembusai, A. I. Santoso, and F. D. Butarbutar, “Design of an Automatic Trash Can Based on Ultrasonic Sensors and Arduino at LP3I Medan Polytechnic”, JOTECHCOM, vol. 3, no. 1, pp. 77–84, Feb. 2026, Accessed: Feb. 14, 2026. [Online]. Available: https://journal.technolabs.co.id/index.php/jotechcom/article/view/91