• Bharat Yadav
• Isha Patkar

Agriculture is the foundation of Chhattisgarh’s economy, with more than 70% of the rural population engaged in farming. However, small and marginal farmers face major challenges due to crop damage caused by under-irrigation and over-irrigation, lack of real-time monitoring, and the very high cost of commercial IoT solutions. EVA (Embedded Voice of Agriculture) presents a scalable, low-cost, and secure smart irrigation architecture integrating soil moisture (capacitive), DHT22 temperature-humidity, and optional MH-Z19C CO₂ sensors with ESP32-C3 based solar-powered field nodes. A Central Control Unit (CCU) built around ESP32 Classic communicates via LoRa (865–867 MHz Indian band). Triple-layer security (unique sync word, node ID whitelist, XOR encryption) prevents cross-farm interference. The system costs ₹6,200–9,500 per acre and demonstrated 35–40% water savings in crops like paddy and wheat.

Smart Agriculture, LoRa Communication, ESP32-C3, Solar Powered IoT, Precision Irrigation, Triple Layer Security

"EVA: A SCALABLE LOW-COST SENSOR-BASED SMART IRRIGATION ARCHITECTURE FOR RURAL INDIA ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.13, Issue 3, page no.255-258, March-2026, Available :http://www.jetir.org/papers/JETIRHQ06043.pdf

"EVA: A SCALABLE LOW-COST SENSOR-BASED SMART IRRIGATION ARCHITECTURE FOR RURAL INDIA ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.13, Issue 3, page no. pp255-258, March-2026, Available at : http://www.jetir.org/papers/JETIRHQ06043.pdf