Development and Implementation of a Cost-Effective Robotic Arm for Precision Pick-and-Place Applications

Abstract

The advancement of automation and robotics has significantly impacted industries, particularly in material handling, manufacturing, and hazardous environments. This study presents the design and fabrication of a four-degree-of-freedom (DOF) robotic arm for pick-and-place operations, focusing on cost-effectiveness, efficiency, and precision. The goal is to develop a reliable, lightweight, and affordable robotic arm for small-scale industries and academic research. The project follows a structured approach, including problem identification, literature review, conceptualization, design, fabrication, and testing. The robotic arm integrates mechanical and electronic components, such as servo motors, a wiper motor, a 12V battery, and a mechanical gripper, ensuring smooth and controlled motion. Aluminum is used for fabrication to maintain strength while reducing weight and cost. A CAD model optimizes the design before fabrication for accuracy and functionality. An Arduino-based microcontroller controls the robotic arm, processing input signals from force sensors and potentiometers to regulate motor movements. The mechanical gripper secures objects of various shapes and sizes, while servo motors provide precise angular positioning. The wiper motor enables stable movement of major links, ensuring operational efficiency. Testing confirmed the system’s accuracy, repeatability, and load-handling capacity, proving its applicability in industrial automation, warehouse management, and research. Safety features such as controlled torque limits and emergency stops enhance reliability. Future improvements include machine vision, AI-based motion planning, and wireless control, increasing adaptability for dynamic environments. This project successfully demonstrates a cost-effective, modular robotic arm, scalable for future advancements. Further refinements in control systems, real-time monitoring, and advanced materials will enhance efficiency and durability, making it a valuable asset in industrial and research applications.