“Automatic Tube Counter Monitoring System Using Infrared Sensor Based on NODEMCU ESP8266”. Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer 7, no. 2 (December 29, 2023): 170–180. Accessed June 18, 2026. https://eltikom.poliban.ac.id/index.php/eltikom/article/view/921.