Aquaponics represents a revolutionary approach to sustainable agriculture, combining aquaculture and hydroponics in an integrated system that maximizes resource efficiency while minimizing environmental impact. This comprehensive review examines the development and implementation of cost-effective automated aquaponics systems utilizing Arduino-based technologies for enhanced legume cultivation and sprout production. The integration of Internet of Things (IoT) sensors, automated control systems and energy-efficient technologies has transformed traditional aquaponics into smart farming solutions capable of optimizing nutrient delivery, water quality management and environmental conditions. Recent advances in microcontroller technologies, particularly Arduino and ESP32 platforms, have enabled the development of affordable monitoring and control systems that can maintain optimal growing conditions while reducing operational costs. This review synthesizes current research on automated aquaponics systems, focusing on their application in legume and sprout production, technological infrastructure requirements, energy harvesting solutions and the nutritional benefits of sprouted legumes. The analysis reveals significant potential for Arduino-based systems to enhance productivity, improve resource utilization and contribute to sustainable food production systems. Key challenges identified include system scalability, energy management and the need for standardized protocols for different crop types. Future research directions emphasize the development of AI-driven control systems, renewable energy integration and optimization of nutrient cycling for specific legume varieties. 
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Cost-effective Automated Aquaponics Systems using Arduino: Enhancing Legume Cultivation, Sprout Growth, Nutrient Content and Sustainable Production: A Review