This project presents a 6 Degrees of Freedom (6-DOF) Robotic Arm built using an Arduino Uno and servo motors to achieve precise multi-joint motion control. The system is capable of performing pick-and-place operations and can be controlled in real-time via a PC using UART communication.

• Independent control of 6 joints (6-DOF)
• Smooth and precise motion using PWM-based servo control
• UART (Serial) communication for real-time control from PC
• Position Save & Playback functionality
• Reset and coordinated motion support
• GUI-based control interface

• Arduino Uno Main microcontroller
• MG996R Servo Motors High torque (base, arm and shoulder joints)
• SG90 Servo Motors Roll,pitch and gripper control
• External Power Supply 5–6V for stable servo operation
• Jumper Wires Connections

• Arduino generates PWM signals to control servo angles
• Each servo corresponds to one joint of the robotic arm
• Commands are sent from PC via UART (Serial Communication)
• Arduino parses commands and moves the respective servo

• Servo signal pins → Arduino Pins 2 to 8
• External 5–6V supply → Servo VCC
• Common GND shared between Arduino and power supply

• Upload the Arduino code to Arduino Uno
• Connect servos to pins 2–8
• Provide external 5–6V power supply
• Open Serial Monitor (9600 baud rate)
• Send commands in format:
• servoIndex:angle
• Example: 1:90

Moves servo 1 to 90°

Uses Arduino Servo.h library Each servo is mapped to a specific pin Serial input is read and parsed Format: servoIndex:angle Switch-case logic controls individual servos Includes mirror logic for synchronized movement (if applicable)

A PC-based GUI is used for advanced control.

• Real-time joint control using sliders
• Save & playback motion sequences
• Reset and stop functionality
• Import/export motion paths

You can view the project images here:

• Robotic Arm
• Circuit Diagram
• Software Interface

• Pick-and-place automation
• Industrial automation concepts
• Robotics learning and prototyping
• Research and embedded systems practice

Add inverse kinematics for intelligent movement Integrate computer vision (ESP32-CAM / OpenCV) Wireless control using WiFi/Bluetooth Upgrade to ROS (Robot Operating System)

Naga Rohit Anudeep N 📧 Open to opportunities in Embedded Systems & Robotics

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This project demonstrates practical implementation of embedded systems, robotics, and real-time control, making it a strong addition to portfolios targeting core electronics and embedded roles.