Rancang Bangun Sistem IoT Monitoring Pemakaian Daya Listrik dan Air Mesin Cuci Laundry Komersial

Suitbertus Anang Wijayanto (Universitas STEKOM, Semarang)
Setiyo Adi Nugroho (Universitas STEKOM, Semarang)
Priyadi Priyadi (Universitas STEKOM, Semarang)

TIN: TERAPAN INFORMATIKA NUSANTARA
Vol 7 No 2 (2026): July 2026

Monitoring electricity and water consumption of washing machines in laundry businesses poses a distinct challenge for laundry owners. This research aims to develop an IoT-based monitoring system for electrical power and water consumption on washing machines using an ESP32, a PZEM-004T sensor, and a YF-S201 water flow sensor. The data captured by the sensors was stored in a MySQL database server via the MQTT protocol and displayed on a monitoring web page built with CodeIgniter, as well as on a Virtuino IoT Android application. The results showed that the electrical sensor was capable of measuring electrical quantities with a reading error rate of 0.5–1% compared to a digital kWh meter. Similarly, the water flow sensor was able to measure water volume with an error rate of approximately 0.2%. The web-based monitoring dashboard can display data and graphs of electricity and water usage, enabling laundry owners to perform analyses for decision-making in future business development. Sensor data storage from the ESP32 to the MySQL server was successfully executed in real-time with a 1-second time delay. Thus, this IoT implementation successfully provides a real-time and accurate operational monitoring system for washing machines.