Hendrian Y, Ferdiansyah Ramadhan G, Adi Nugroho P. Prototype Sistem Monitoring Banjir Berbasis Thingspeak Menggunakan Sensor HC-SR04 Dan Node MCU Esp-8266. INSANtek [Internet]. 2024May30 [cited 2024Jul.3];5(1):01 - 06. Available from: http://jurnal.bsi.ac.id/index.php/insantek/article/view/3301