Mulia, Ahmad, S Subagio, and Wahyu Azhar Ritonga. “Implementation of NodeMCU ESP8266 Microcontroller for Teacher Attendance System at SMK Swasta Pemda Rantauprapat”. U-NET Jurnal Teknik Informatika 8, no. 2 (March 15, 2025): 10-22. Accessed October 1, 2026. https://ejurnal.univalabuhanbatu.ac.id/u-net/article/view/848.