ROS 2 Tutorial: Build a 3-DOF Robotic Arm Digital Twin (Hardware + Simulation) Step-by-Step

Video Description

Welcome to our ROS 2 Digital Twin Integration Masterclass. In this in-depth, end-to-end workshop, we walk you through building a complete ROS 2 Digital Twin of a 3-DOF robotic arm, tightly integrating real hardware with simulation. You’ll learn how to connect an ESP32-based physical robotic arm with ROS 2, visualize it in RViz, simulate it realistically in Gazebo, and control the virtual robot in real time using the physical arm. This session focuses on true system integration—the skill that actually matters in robotics jobs and R&D. This masterclass is ideal for: - Robotics & Mechatronics students - Aspiring ROS 2 developers - Embedded + ROS engineers - Anyone who wants to understand hardware–software co-design in robotics Visit Website: mechamindlabs.com 🤖 PROJECT CODE & RESOURCES Access all source code, URDFs, launch files, firmware, STEP Files and documentation here: 👉 https://github.com/MechaMind-Labs/ROS2_3DOF_Robotic_Arm_Digital_Twin.git 🔥 READY TO GO PRO? JOIN OUR 45-DAY COHORT 🔥 We’re launching AMR MASTERY – a 45-Day Career Accelerator, where you don’t just watch tutorials—you build real robots. In this intensive cohort, you will: - Build a complete robot from scratch (simulation + hardware) - Learn ROS 2 the way it’s used in industry - Work on SLAM, Navigation, Control, Integration and much more... - Graduate with a job-ready robotics portfolio If you’re serious about a career in robotics, this is your next step. 👉 Register here: https://mechamindlabs.com/courses 🔗 STAY CONNECTED 💬 Join our WhatsApp Community Get direct support, updates, discussions, and networking with fellow robotics builders: 👉 https://chat.whatsapp.com/FFD5Yt2i9eM4aGMGsqp2SS 📺 Subscribe to the channel for more deep-dive ROS 2 workshops, digital twins, AMRs, and real hardware projects. Timestamps 00:00 Introduction: AMR Mastery Program Teaser (45 Days Challenge) 01:13 Workshop Start: Building a ROS 2 Digital Twin 01:38 Speaker Introduction & Agenda 03:26 AMR Mastery Program Overview 05:01 What is a Digital Twin? 07:52 Hardware Overview: ESP32, Potentiometers & 3D Printed Arm 08:52 Why ESP32? (12-bit ADC vs Arduino) 10:15 Understanding Potentiometers (Voltage Divider & Absolute Position) 12:56 Wiring Diagram & Safety (3.3V Logic) 19:55 ESP32 Coding: Reading a Single Potentiometer 25:00 Reading Multiple Joints & Moving Average Filter 33:10 Hardware-to-ROS 2 Communication Pipeline 37:58 ROS 2 Workspace Setup & twin_firmware Package 40:21 Serial Reader Node (Python): CSV to Joint Angles 49:09 Testing the Serial Reader Node (ros2 topic echo) 53:05 twin_description Package Structure 54:13 URDF & Xacro Modeling (Links, Joints, Meshes) 58:53 TF Explained: Transforms & Frames 01:06:51 RViz Setup & Launch Files 01:11:14 Simulation Test: GUI Joint Sliders 01:14:17 Relay Node: Hardware to Simulation Topics 01:20:20 Milestone: Real-Time RViz Control Using Physical Arm 01:24:23 Preparing for Gazebo (Inertial, Collision, World) 01:26:39 Gazebo Plugins: ros2_control & Ignition 01:29:30 Gazebo Launch File & Robot Spawning 01:33:02 Controller Configuration (controllers.yaml) 01:39:14 Launching the Full Stack 01:43:52 Final Demo: Hardware Teleop in Gazebo 01:46:20 Bringup Package: One-Command Launch 01:50:01 Q&A: CAD, Digital Twins & Fusion 360 01:57:47 Conclusion & Invitation to Robotics Cohort #ros2 #ros2tutorial #robotics #ros2forbeginners #roboticarm #roboticsengineering #gazebo #rviz #pickandplace #ros2projects #roboticsprojects #mechamindlabs #esp32 #embeddedsystems