Ihsan, Muhamad Maulana, and Wahyu Joko Saputro. 2025. “Implementation of a Sound Sensor-Based Automatic Light Switch Using a Wemos D1 R32 Microcontroller in a Classroom”. JOISTECH: Journal of Information System and Technology 2 (2), 60-65. https://mail.ejournal.darunnajah.ac.id/index.php/joistech/article/view/762.