Automated Nutrition Doser for Hydroponic System Based on IoT

Along with population growth and the shrinking amount of arable land, agricultural technology is developing so quickly. Instead of using soil as a growing medium, hydroponic farming solely employs water that is enriched with the nutrients that plants require. Precision is a crucial factor in hydroponic gardening since it determines how accurately plants receive nutrients. This research involved the development of an automated nutrient dosing system for hydroponic plants. The Internet of Things (IoT)-based automation system can be utilized so that hydroponic plants can still be looked after and monitored remotely using the NodeMCU microcontroller, which is integrated with various sensors. A TDS meter sensor for monitoring nutrients in ppm (parts per million) and an ultrasonic sensor for assessing water levels are among the sensors utilized in this hydroponic research automation system. Peristaltic pumps, micro pumps, and venturi pumps are the actuators that are employed. The plant being researched in this study is pakcoy, and the dosage is based on mix AB's molarity dose to satisfy the plant's ppm range of 1050–1400 ppm. With reference to the weekly range, the doser is modified. The results of the nutritional solution discharge test using a peristaltic pump have an average of 0.9345 ml/s, the results of the calibration test for the TDS sensor have a percent error of 0.00563925%, and the results of the water discharge test using a small pump have an average of 17.989 ml/s The result of the automated system that is used is successful because every week it provides the appropriate dose of nutrients.