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Abdul Harris3
Universitas Dinamika Bangsa
Computer Science & IT

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Design and Development of an IoT-Based Automatic Water-Changing and Fish-Feeding System Using an ESP32 Microcontroller Dodi Sandra; Yuval Argian Foris; Abdul Harris3
Jurnal Informatika Dan Rekayasa Komputer(JAKAKOM) Vol 6 No 2 (2026): JAKAKOM Vol 6 No 2 SEPTEMBER 2026
Publisher : LPPM Universitas Dinamika Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33998/jakakom.2026.6.2.2867

Abstract

Abstract-The goal of this project is to use the ESP32 microcontroller to develop and construct an Internet of Things (IoT)-based automatic water change and fish feeding system for ornamental fish tanks. The problem addressed is the manual maintenance process which requires continuous supervision and is prone to errors in managing aquarium water quality and feeding schedules. The system integrates a pH sensor (SEN0161), turbidity sensor, ultrasonic sensor (HC-SR04), DS18B20 temperature sensor, water pump relay, and servo motor, all controlled by an ESP32 microcontroller and monitored via the Blynk application. Testing results show that the pH sensor correctly reads water acidity levels across different conditions. The turbidity sensor successfully triggers automatic water changes when turbidity exceeds 20% threshold. The ultrasonic sensor measures water level with adequate accuracy. The servo motor operates reliably for scheduled and manual feeding. The system supports two operation modes: automatic (sensor-based and time-scheduled) and manual (via Blynk). Overall, the prototype demonstrates effective integration of sensors and actuators for real-time aquarium monitoring and automated maintenance, supporting IoT application in the ornamental fish sector.
Co-Authors Dodi Sandra Yuval Argian Foris