Mobile Controlled Solar Lawn Trimmer

This paper presents the development of an IoT-enabled, solar-powered grass cutter designed for autonomous operation in lawn maintenance tasks. The system is powered by solar energy for eco-friendly operation and utilizes an Arduino Uno as the central controller. Key components include a solar panel with a charge controller, battery, motor drivers, and a servo-mounted ultrasonic sensor for obstacle detection. The robot is programmed to follow a predefined square path to ensure systematic coverage of the area. It supports dual operation modes such as Bluetooth and Ultrasonic that can be toggled through a mobile application. The integration of IoT enables real-time monitoring and control, reducing the need for manual supervision. Field tests confirm the system’s ability to navigate accurately, avoid obstacles, and operate efficiently under varying light conditions, demonstrating its suitability for maintaining lawns in public parks, institutions, and other open spaces.