Sistem Monitoring dan Controlling Hidroponik Selada Berbasis IoT di Greenhouse Hortikultura

Rini Yanti (Politeknik Pertanian Negeri Payakumbuh)
Rabby Nazli (Politeknik Pertanian Negeri Payakumbuh)
Ega Evinda Putri (Politeknik Pertanian Negeri Payakumbuh)

Jurnal Sistem Informasi, Teknik Informatika, dan Sistem Komputer
Vol. 2 No. 3 (2026): Jurnal Sintika

Manually monitoring pH and Total Dissolved Solids (TDS) in hydroponic farming can slow down adjusting nutrient solution conditions. This study aimed to develop an IoT-based system for monitoring and controlling pH and TDS in hydroponic lettuce (Lactuca sativa L.) using the Nutrient Film Technique (NFT). The system was developed using the ADDIE method, which includes analysis, design, development, implementation, and evaluation stages. The system uses an ESP32 to process sensor data and send real-time measurements to an Android app while storing data online. Test results show the pH sensor has 95.74% accuracy with a 4.26% error, while the TDS sensor reached 93.74% accuracy with a 6.26% error. The system can automatically monitor, record data, and control nutrients based on TDS ranges according to plant age.