Sistem Pengisian Otomatis dan Pemantauan Stok Tangki Air Menggunakan Sensor JSN-SR04T dan Sensor Water Flow YF-S201 Berbasis Internet of Things

Abstract

A stable supply of clean water is essential, especially for industrial sectors such as drinking water depots. This study aimed to develop an automatic water refilling and tank stock monitoring system using Internet of Things (IoT) technology. The system uses the JSN-SR04T ultrasonic sensor to detect water level and the YF-S201 water flow sensor to measure the discharged volume. The ESP32 microcontroller served as the main processing unit. Monitoring data is transmitted and displayed in real-time via the Blynk application. The system is also equipped with a relay to control the water pump and a DFPlayer Mini to provide voice alerts at three water level points. Test results showed that the JSN-SR04T sensor achieved an average accuracy of 99.85%, while the YF-S201 sensor reached 97.86%. The system proved effective in improving the efficiency, accuracy, and responsiveness of water stock management in an automated and real-time manner.