This project work focuses on a smart sprinkler irrigation system that is less costly and any farmer used in farm division. In 21st century where automation is playing the most significant role in the life of human. Automation allows us to control appliances with automatic control. Automation gives comfort, increase efficiency as well as save time. Our proposed system uses a robot with a single sprinkler and a water tank that moves throughout the field spraying water all over it. This technology could improve agriculture efficiency, promoting water conservation and reducing the environmental impacts. The objectives of this project are to avoid wastage of water and increase agriculture efficiency by using Arduino Uno based automatic plant watering system. Soil moisture sensor inserts in the soil to sense whether the soil is wet or dry. The control unit monitors the sensors and when moisture sensor senses dry condition the control circuit will switch on the motor for watering the soil and it will switch off the motor when the moisture sensor senses enough wetness of the soil at which one, two or three of the factors are in abnormal conditions. It is like a moving water tank that automatically moves all over the field spraying water through it. This robot is equipped with geo fencing sensors, so it will cover complete fields without needing any manual intervention.