Abstract: This paper presents an soil moisture sensor to detect the moisture content in the soil and an NodeMCU (ESP32) Microcontroller Board to control a water pump. The system uses a IoT-based smart irrigation system designed to automatically control water flow according to soil moisture levels. When the soil is dry, the motor is switched ON to provide water, and it automatically switches OFF when the required moisture level is reached. The project is further enhanced using IoT, allowing users to monitor and control the irrigation process remotely via the internet. This approach ensures efficient water usage, reduces manual effort, and is especially beneficial for agricultural and home gardening applications.

Keywords: IoT, NodeMCU (ESP32) Microcontroller, Soil Moisture Sensor, Smart Irrigation, Automated Watering System

Downloads: | DOI: 10.17148/IJIREEICE.2025.131205