In the past decade, revolutionary innovations in allied technology have given rise to the design and construction of ubiquitous mechatronic systems for different domains of industrial applications. The process and manufacturing industries have a lot of areas that are hazardous to direct human interaction. Therefore, development of a wirelessly controlled robotic arm akin to human skills is urgently needed in industrial applications. Further, the deployment of the Arduino Uno microcontroller platform has very promising features for designing mechatronic systems. So, it is proposed to develop a wirelessly controlled robotic arm. In this proposed article, a robot arm having the ability to move in four directions (up, down, left, and right) has been constructed. This controlled mobility is achieved with the help of a 4-DOF (Degree of Freedom) design deploying two types of servo motors, the SG90 and the MG996R. The Bluetooth module, HC- 05, is interfaced to achieve wireless communication. These devices are wired around the powerful electronic platform "Arduino Uno microcontroller," and an Android-based application is deployed on a smart phone to control this robotic arm wirelessly. The prototype of the Wireless Robotic Arm (WRA) is designed and developed successfully in the laboratory for industrial applications, pick-and-place operations, and it works smoothly and has good repeatability.
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