IoT-based Aquaponics System Monitoring and Control Using ESP32 with Renewable Energy from Solar Power Plant

Aquaponics is a farming system that combines fish and plant farming in one closed ecosystem, which requires proper management of environmental parameters, such as water pH and temperature, to ensure optimal fish health and plant growth. This research aims to design and implement a real-time monitoring and control system for water pH and temperature in a renewable energy-based aquaponics system, namely Solar Power Plant (PLTS), using ESP32 and Blynk platform. The system utilizes pH sensors and temperature sensors to monitor environmental conditions continuously, while the ESP32 acts as the main controller that connects the hardware with the Blynk application that can be accessed via smartphone. The utilization of solar energy can allow this system to operate independently without relying on the conventional power grid. The test results show that the system can work efficiently and stably, especially for the electricity needs of solar panels which have an average voltage from the PLTS of 3.91 volts in activating the system independently. However, the accuracy of the pH sensor still needs to be improved due to inconsistent readings. The combination of sustainable agriculture technology and renewable energy utilization makes this system an alternative solution to support food security on limited land, especially in urban areas.