Hydroponics Monitoring and Control System

This paper presents the design and construction of a hydroponics monitoring system that can collect parameters of hydroponic systems, such as temperature, water limit, pH level, and nutrient levels. The monitoring system was developed using an ESP32 microcontroller and several sensors, including total dissolved solids (TDS), pH, water level, and temperature sensors. The ESP32 microcontroller gathers and processes data from the sensors to automatically activate the water or salt pump and drain the necessary materials into the hydroponic system's plant basin. The user can then view the hydroponic parameters through the Blynk application on a smart phone. The user can also activate the pumps for water, nutrients, or salt using the application's interface on a smart phone, or the ESP32 microcontroller can activate them automatically if the parameter values deviate from the required values