The Solar-Powered Automatic Grass Cutter with Obstacle Detection is an intelligent and eco-friendly robotic system designed to cut grass automatically without human intervention. The system operates using a rechargeable 12V battery powered by a solar panel, eliminating the need for external charging and reducing dependence on conventional energy sources. This makes the system energy-efficient, cost-effective, and environmentally friendly. A PIC microcontroller is used as the main control unit to manage the movement of the vehicle and the operation of the grass-cutting motor. An ultrasonic sensor continuously scans the surrounding area to detect obstacles such as humans, animals, or objects. Under normal conditions, the robot moves forward while cutting grass. When an obstacle is detected, the microcontroller immediately stops the cutting motor and changes the vehicle's direction to avoid collision. Once a clear path is found, the robot resumes its grass-cutting operation automatically. The proposed system provides a safe, autonomous, and efficient solution for lawn maintenance in gardens, parks, playgrounds, and agricultural fields. By combining solar energy, automated navigation, and obstacle avoidance, the system reduces manual labor, enhances safety, and promotes the use of renewable energy in outdoor applications.    

The main objectives of the project are:

  To develop a fully automatic grass-cutting robot that operates without human intervention.

  To utilize solar energy for charging the battery and powering the system, reducing electricity consumption.

  To detect and avoid obstacles using an ultrasonic sensor for safe operation.

  To control the movement and grass-cutting mechanism using a PIC microcontroller.

  To reduce manual labor, maintenance cost, and time required for lawn and garden maintenance.    

The major building blocks of this project are:

1. Battery Power Supply.
2. PIC Microcontroller.
3. Ultrasonic sensor.
4. DC motors with driver.
5. Relay with Grass cutter.
6. Solar panel.
7. Charging Circuit.

    Software’s used:

1. PIC -C for compiling and dumping code into controller
2. Express SCH for Circuit design.

   

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