SixAxis Control Arm
Introduction
The SixAxis Control Arm is a fully functional 6‑degree‑of‑freedom (6‑DOF) robotic arm built using an Arduino Uno and a modern web‑based control dashboard.
Designed to mimic natural human arm movement, this system can perform precise pick‑and‑place tasks, making it ideal for robotics education, automation prototyping, and hands‑on experimentation.
Whether you’re a student, hobbyist, or maker, this project provides practical experience in mechanical design, embedded programming, electronics, and real‑time web control.
What Is a Robotic Arm?
A robotic arm is a mechanical structure engineered to replicate the motion of a human arm.
Using multiple joints and actuators, it can manipulate objects in three‑dimensional space with accuracy and repeatability.
While industrial robotic arms are used in manufacturing, machining, and medical applications, DIY versions like this one are perfect for learning, experimentation, and prototyping.
Project Overview
The SixAxis Control Arm combines:
Mechanical assembly: 3D‑printed structural components and articulated joints
Electronics: Servo motors driven by an Arduino Uno
Software: Arduino firmware + a web dashboard (HTML/JS) for real‑time control
Key Features
Real‑time joint control via sliders
Home‑position reset
Motion recording and playback
Smooth and flexible joint manipulation
You Will Learn
Servo control using PWM
Serial communication between Arduino and a web browser
Basics of 3D design and mechanical assembly
Power distribution for multi‑servo systems
Mechanical Assembly – 3D Printing and Construction
Download and print the STL/CAD files for the base, arm links, joints, and gripper.
Check alignment of all printed parts to ensure smooth servo installation.
Mount the servos securely into their designated slots.
Assemble the arm, connecting all segments to form the complete 6‑axis structure.
Electrical Wiring
Connect all six servo motors to the PWM‑capable pins on the Arduino Uno.
Route the signal wires to the assigned digital pins, and connect power and ground through a shared rail linked to an external 5 V power supply.
This ensures stable current delivery to all servos during operation.
Web Dashboard – Real‑Time Control Interface
The included web dashboard allows you to:
Move each joint in real time using sliders
Reset the arm to its home position
Record and save motion sequences
Automatically replay stored sequences
Simply open the HTML file in a Chromium‑based browser (e.g., Chrome) and connect using the Web Serial API — no installation required.
Operating the SixAxis Control Arm
Place the assembled arm on a stable surface.
Connect the external power supply and the Arduino via USB.
Upload the firmware.
Open the dashboard and select the correct serial port.
Use the sliders to move the joints and perform actions.
Record and replay motion sequences as needed.
Troubleshooting
Servos jitter or fail to move: Check the external power supply and shared ground.
Dashboard cannot connect: Ensure you’re using a Chromium browser with Web Serial support.
Uneven or slow movement: Verify servo horn alignment and initial calibration.
Conclusion
The SixAxis Control Arm is more than a simple robotics build — it’s a complete learning platform that blends mechanical engineering, embedded programming, and web‑based control into one cohesive system.
By completing this project, you gain valuable experience in servo control, kinematics, electronics, and UI design, making it an excellent foundation for more advanced robotics and Arduino automation projects.
Click here to view the project
