Voice Controlled Robotic Arm

This paper outlines the development of a voice-controlled robotic arm using an ESP32 microcontroller and a smartphone app, which aims to improve user interaction and automation. The system enables the robotic arm to be controlled via voice commands sent from an Android device via Bluetooth. The robotic arm, mounted on a mobile chassis, is capable of moving freely in all directions. It has a gripper mechanism for picking and placing objects, which mimics the movement of a human hand with three degrees of freedom: shoulder, elbow, and fingers. DC motors with a reduction gear mechanism power both the vehicle and the robot functions, including gripper control. A heavy-duty battery ensures continuous operation, while servo motors provide precision in joint movements. The smartphone app serves as an intuitive interface for issuing voice commands and adjusting parameters such as the speed and direction of the robotic arm. This integration of voice control not only increases accessibility, but also enables remote and hands-free operation, making it ideal for applications in industrial automation, warehousing, and educational settings. Experimental tests confirm the reliability, accuracy, and consistent operation of the system, demonstrating its potential for real-world implementation and scalability for advanced automation tasks in various domains