Fish Feeding Automation and Aquaponics Monitoring System Base on IoT

Aquaponics is a cultivation technology that combines fish farming with plants. The degree of acidity (pH) and total dissolved solids (TDS) must be monitored for optimal fish and vegetable growth. In this research, a monitoring system was designed for pH and TDS in aquaponics and automation of fish feeding based on scheduling and level of need. Monitoring of pH and TDS as well as automation of fish feeding is done through an Android-based application. Fish feeding is carried out according to a schedule with a specified feed weight. The monitoring system for pH and TDS are carried out in real-time. The sensors used in this research are a pH sensor to measure pH values and an analog TDS sensor to measure total TDS. The communication system used is based on IoT technology. Based on the test results, it is found that the average difference between the readings of the pH sensor and the pH meter is 0.66% and the average difference between the readings of the TDS sensor and the TDS meter is 2.588%. The system has been able to provide fish feed according to a set schedule automatically and with a feed weight as needed with an error rate of only 1%.