Design and Construction of an IoT-Based Water Level Monitoring and Control System Prototype Using ESP32 & Blynk

Main Article Content

Fikko Nanda Ramadhani
Nasywa Hamna Zakiya

Abstract

Clean water management often faces obstacles such as overflowing water reservoirs or pump damage due to limited manual monitoring. This study aims to design and implement an automatic water reservoir monitoring and control system based on the Internet of Things (IoT). The method used is a prototype method that includes the identification, design, and repeated testing stages. The hardware architecture consists of an ESP32 microcontroller, an HC-SR04 ultrasonic sensor, a relay, a buzzer, and a manual drain tap connected to a 300 ml reservoir, integrated with the blynk cloud platform. The sensor measures the distance to the water surface which is converted into volume using the formula V = ((H - d)/H) x Vmax. The test results show that the system successfully classifies water levels into three categories: "Low", "Medium", and "Full" with good accuracy. The pump operates automatically when the water is low and reaches a stable off state at a threshold of 6 cm to prevent overflow, while the manual drain tap allows users to drain excess water as needed. Additionally, the system provides real-time monitoring and manual control through a low-latency smartphone interface. In conclusion, the implemented IoT system effectively overcomes manual monitoring challenges, improves water efficiency, and provides users with reliable remote control access.

Article Details

How to Cite
Nanda Ramadhani, F., & Hamna Zakiya, N. (2026). Design and Construction of an IoT-Based Water Level Monitoring and Control System Prototype Using ESP32 & Blynk. Tech : Journal of Engineering Science, 2(1), 163–180. https://doi.org/10.69836/tech.v2i1.822
Section
Articles
Author Biographies

Fikko Nanda Ramadhani, Universitas Duta Bangsa Surakarta, Central Java, Indonesia

Fikko Nanda Ramadhani adalah mahasiswa program studi Teknik Informatika di Universitas Duta Bangsa Surakarta. Penulis memiliki ketertarikan yang mendalam di bidang Internet of Things (IoT), otomasi industri, dan pengembangan bot messaging. Penelitian mengenai sistem monitoring tandon air ini merupakan salah satu kontribusi penulis dalam menerapkan teknologi IoT untuk solusi rumah tangga cerdas. Penulis berharap dapat terus mengembangkan inovasi teknologi yang bermanfaat bagi masyarakat luas di masa depan

Nasywa Hamna Zakiya, Universitas Duta Bangsa Surakarta, Central Java, Indonesia

Penulis bernama Nasywa Hamna Zakiya merupakan mahasiswa dengan program studi S1 Teknik Informatika di Universitas Duta Bangsa Surakarta. Penulis memiliki minat di bidang teknologi, khususnya pemrograman dan Internet of Things (IoT). Saat ini, penulis sedang fokus mengembangkan proyek sistem monitoring dan kontrol tandon air berbasis IoT yang dapat memantau ketinggian air secara real-time. Melalui proyek ini, penulis mencoba menerapkan ilmu yang dipelajari ke dalam solusi nyata untuk permasalahan sehari-hari.

References

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Wati, E. K., Santoso, H. H., & Laksono, A. (2024). Iot-Based Water Level Monitoring System of Situ Rawa Besar. MSJ : Majority Science Journal, 2(1), 219–231. https://doi.org/10.61942/msj.v2i1.89

Zen, M. (n.d.). Implementation of an Internet of Things ( IoT ) Based Water Level Monitoring System Using Ultrasonic Sensors and the Blynk Application. 2658–2665.

Djalilov, A., Sobirov, E., Nazarov, O., Urolov, S., & Gayipov, I. (2023). Study on automatic water level detection process using ultrasonic sensor. IOP Conference Series: Earth and Environmental Science, 1142(1). https://doi.org/10.1088/1755-1315/1142/1/012020

Hanan, Gunawan, A. A. N., & Sumadiyasa, M. (2019). Water level detection system based on ultrasonic sensors HC-SR04 and Esp8266-12 modules with telegram and buzzer communication media. Instrumentation Mesure Metrologie, 18(3), 305–309. https://doi.org/10.18280/i2m.180311

Hasanah, A. P., & Hafni, H. (2025). Perancangan Sistem Monitoring Level Air Menggunakan Sensor Ultrasonik Berbasis Iot Dengan Aplikasi Blynk. Jurnal Informatika Dan Teknik Elektro Terapan, 13(2), 1477–1483. https://doi.org/10.23960/jitet.v13i2.6485

Hercog, D., Lerher, T., Truntič, M., & Težak, O. (2023). Design and Implementation of ESP32-Based IoT Devices. Sensors, 23(15). https://doi.org/10.3390/s23156739

Husaini, A., & Sary, Y. (2024). Smart Monitoring System of Water Tank Based on Internet of Things. Hanif Journal of Information Systems, 2(1), 22–30. https://doi.org/10.56211/hanif.v2i1.25

Jan, F., Min-Allah, N., Saeed, S., Iqbal, S. Z., & Ahmed, R. (2022). IoT-Based Solutions to Monitor Water Level, Leakage, and Motor Control for Smart Water Tanks. Water (Switzerland), 14(3), 1–36. https://doi.org/10.3390/w14030309

Kakani, D., Kulkarni, A., Pandya, Y., & Mehendale, N. (2024). IoT-Based Smart Home Automation Using ESP32 and Blynk with Enhanced Reliability. SSRN Electronic Journal, 14(8), 1–6. https://doi.org/10.2139/ssrn.4802741

KementerianPUPR, Rakyat, K. P. U. dan P., Kementerian Kesehatan, Arquitectura, E. Y., Introducci, T. I., 赫晓霞, Iv, T., Teatinas, L. A. S., Conclusiones, T. V. I. I., Contemporáneo, P. D. E. U. S. O., Evaluaci, T. V, Ai, F., Jakubiec, J. A., Weeks, D. P. C. C. L. E. Y. N. to K. in 20, Mu, A., Inan, T., Sierra Garriga, C., Library, P. Y., Hom, H., … Waldenström, L. (2023). No 主観的健康感を中心とした在宅高齢者における 健康関連指標に関する共分散構造分析Title. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 53(1), 1–19. http://publications.lib.chalmers.se/records/fulltext/245180/245180.pdf%0Ahttps://hdl.handle.net/20.500.12380/245180%0Ahttp://dx.doi.org/10.1016/j.jsames.2011.03.003%0Ahttps://doi.org/10.1016/j.gr.2017.08.001%0Ahttp://dx.doi.org/10.1016/j.precamres.2014.12

Latar, M. S., Kelobas, A., & Saripuddin, M. (n.d.). RANCANG BANGUN MONITORING DAN KONTROL OTOMATIS VOLUME AIR PADA TANDON PENYIMPANAN AIR BERBASIS INTERNET OF THINGS ( IOT ). 696–705.

Noor, M. F. (2024). Simulasi Sistem Pemantauan Ketinggian Air Pada. Journal of Data Analytics, Information, and Computer Science, 4(4), 19–29.

Pane, R., Purnama, I., Dar Hasibuan, H., & Rasyid Munthe, I. (2024). Automatic Monitoring System Iot (Internet Of Things) Based Water Tanks. International Journal of Science, Technology & Management, 5(4), 1008–1014. https://doi.org/10.46729/ijstm.v5i4.1151

Rifka Alkhilyatul Ma’rifat, I Made Suraharta, I. I. J. (2024). No Title 済無No Title No Title No Title. 2, 306–312.

Rindra, A. K., Widodo, A., Baskoro, F., & Kholis, N. (2021). Sistem Monitoring Level Ketinggian Air Pada Tandon Rumah Tangga Berbasis Iot (Internet Of Things). Jurnal Teknik Elektro, 11(1), 17–22. https://doi.org/10.26740/jte.v11n1.p17-22

Tahmidul Huque, M., Jaofor, J., Raziur Rahman Pushon, S., & Zaman Ekah, F. (2023). Internet of Things (IoT) based Smart Water Tank Level Monitoring and Motor Pump Control System for Prevent Water Waste 6 PUBLICATIONS 4 CITATIONS SEE PROFILE 6 PUBLICATIONS 4 CITATIONS SEE PROFILE. June, 352–361. https://www.researchgate.net/publication/371634266

Tri, N., Putra, A., Made, G., Desnanjaya, N., Krishna, P., Saputra, G., Sri, K., Astuti, A., Studi, P., & Komputer, S. (2023). Perancangan Sistem Monitoring Ketersediaan Air Otomatis Menggunakan Applikasi Blynk Berbasis Internet of Things (IoT). Jurnal Ilmu Komputer Dan Sistem Informasi (JIKOMSI), 6(3), 154–164. https://ejournal.sisfokomtek.org/index.php/jikom/article/view/1170

Wati, E. K., Santoso, H. H., & Laksono, A. (2024). Iot-Based Water Level Monitoring System of Situ Rawa Besar. MSJ : Majority Science Journal, 2(1), 219–231. https://doi.org/10.61942/msj.v2i1.89

Zen, M. (n.d.). Implementation of an Internet of Things ( IoT ) Based Water Level Monitoring System Using Ultrasonic Sensors and the Blynk Application. 2658–2665.