AUTONOMOUS AGRICULTURAL ROBOT FOR SEEDING, SPRAYING, AND WEEDING

Abstract: This project presents the design and development of an Autonomous Agricultural Robot for Seeding, Spraying, and Weeding operations aimed at reducing manual labour and improving farming efficiency. The system is built using a PIC Microcontroller, which acts as the main control unit to coordinate all operations of the robot. Utilizing a 1.5 mm square hollow mild steel frame with compact dimensions (24" x 16") to navigate small-scale fields, the movement is powered by PMDC worm gear motors and 8-inch nylon wheels, providing high torque for uneven terrains. The system integrates a 250g GI sheet seed box, a 500ml pesticide tank with a pump/nozzle, and a mild steel weeding mechanism. Operating in a semi-autonomous mode, this robot aims to reduce manual labor, minimize chemical wastage, and improve farming efficiency through a cost-effective, userfriendly design.

Keywords: Agricultural Robot, PIC Microcontroller, Seeding, Spraying, Mechanical Weeding, Precision Farming.