Smart Irrigation System Using IoT for Precision Agriculture and Water Conservation

Abstract—This paper presents the design and implementation of an Internet of Things (IoT) based smart irrigation system aimed at addressing water wastage in agricultural practices. Traditional irrigation methods result in approximately 60% water wastage globally, primarily due to inefficient water management systems. The proposed system integrates multiple sensors including soil moisture sensor, rain drop sensor, DHT11 temperature and humidity sensor, and PIR motion sensor, all interfaced with an ESP8266 WiFi module for wireless data transmission and remote monitoring. The system enables automated irrigation control based on real-time soil conditions while providing remote accessibility through mobile applications. Experimental results demonstrate significant water conservation potential with accurate sensor readings and reliable wireless communication. The system achieved ±1°C temperature accuracy and ±1% humidity accuracy with efficient power consumption of 150mA during active operations. This cost-effective solution addresses the critical need for sustainable water management in agriculture while enabling farmers to monitor and control irrigation systems remotely. Keywords—Internet of Things (IoT), Smart irrigation, Precision agriculture, Water conservation, Wireless sensor networks, ESP8266, Automated irrigation control.