Control and Monitoring System of Hydroponic Nutrients in Different Hydroponic Racks Based on IoT in Cibodas Village Lembang District
Keywords:
Hydroponic, Cibodas, Internet of Things, mobile application, sensor, close loop, nutrientAbstract
Hydroponics is a method of growing plants without soil, utilizing water to meet their nutritional needs. Nutrients and pH levels must be carefully managed externally, requiring special attention for each plant. In Cibodas village, farmers face challenges with daily manual control of nutrients and pH, especially as each hydroponic rack contains different types of plants, necessitating more attention. Previous research on nutrient control with IoT-based closed-loop methods focused on a single plant type per rack. This study broadens the scope by implementing IoT-based control and monitoring systems for various plants in different hydroponic racks. The system uses components like ESP32, a pH sensor (4502C), a TDS sensor (V1.0), relays, and peristaltic pumps, all within a closed-loop control framework. The interface employs an I2C LCD and a Kodular mobile application that connects to Firebase via the internet, enabling remote monitoring and control. Testing revealed high sensor accuracy: 99.16% for the pH sensor and 98.98% for the TDS sensor in one rack, and 98.91% for pH and 99.01% for TDS in another rack. This system successfully manages nutrient levels both manually and automatically across different hydroponic racks, even at a maximum tested distance of 62 km.
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