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Sjschhabra/README.md
Sameerjeet S. Chhabra

Β  Β  Β  Β 




About Me

class SameerjeetChhabra:
    degree    = "M.S. Robotics & Autonomous Systems β€” ASU  |  GPA: 3.78 / 4.0"
    location  = "Mesa, Arizona  β†’  Open to relocation"
    focus     = ["Legged Locomotion", "MPC", "Sim-to-Real Transfer", "Sensor Fusion"]
    stack     = ["MuJoCo", "ROS2", "MoveIt2", "PyTorch", "Open3D", "OpenCV", "MATLAB"]
    languages = ["Python", "C++"]
    hardware  = ["Jetson Nano", "Raspberry Pi", "Arduino", "LiDAR", "Stereo Cameras"]
    currently = "Building Project Eleven β€” 20 cm Bipedal/Quadruped with MPC"
    status    = "Graduating May 2026  Β·  Seeking full-time robotics roles"

Projects

Project Eleven β€” Bipedal / Quadruped Robot

MuJoCo MPC URDF/MJCF SolidWorks C++

Designed a 20 cm bipedal/quadruped from scratch with 3-DoF per leg (hip, knee, ankle). Exported SolidWorks CAD to URDF, compiled to MuJoCo MJCF with tuned actuators, joint limits, damping, and stiffness. Full sensor suite β€” IMU + contact sensors. Stable static balance achieved in sim. Currently implementing Model Predictive Control for dynamic locomotion with real-time joint torque optimization.

Grasshopper-Inspired Walking Robot β€” Sim-to-Real

MuJoCo System Identification SG90 Servos Cardboard

Bio-inspired four-bar linkage walker fabricated from laminated cardboard β€” zero off-the-shelf structural parts. Ran system identification experiments to extract stiffness, damping, friction, and servo dynamics from hardware. Embedded all measured parameters into a MuJoCo physics model. Parameter sweeps + simulation-based gait optimization predicted real hardware performance within 5–22% sim-to-real error.

Voice-Operated Mobile Manipulator

ROS2 MoveIt2 Nav2 YOLOv8 SLAM AMCL

Integrated TurtleBot4 and myCobot 280 arm in a full autonomous stack. SLAM for mapping, AMCL for Β±5 cm localization, Nav2 for navigation, MoveIt2 for arm motion planning, YOLOv8 for object detection at 92% accuracy, and a speech-to-text voice command pipeline with 85% recognition accuracy in live unscripted operation.

MuJoCo Robotic Arm β€” 3D Depth Reconstruction

Open3D Stereo Vision Point Clouds Forward Kinematics

Built a 6-DoF arm in MuJoCo with a stereo end-effector depth camera (90Β° FoV) on a linear slider. Transformed depth images from 50+ camera poses into world-frame point clouds using calibrated intrinsics, extrinsics, and forward kinematics. Fused 100k+ 3D points and executed Poisson surface reconstruction under simulated range-dependent noise.

6-DoF Robotic Arm β€” Custom IK Solver & Vision

C++ Newton-Raphson IK OpenCV A* Path Planning

Derived and implemented a Newton-Raphson inverse kinematics solver from scratch achieving Β±0.2 mm end-effector accuracy across the full workspace. Integrated a real-time OpenCV vision pipeline with A* path planning. Solved a physical maze course with 95% success rate over 20+ trials.

PLC-Controlled Semiconductor Automation System

Allen Bradley Ladder Logic HMI SCARA

Automated wafer handling system using Allen Bradley PLC, SCARA robots, and laser processing with coordinated motion control. Designed full HMI interface, programmed ladder logic sequences, and validated end-to-end automation pipeline.

Smart Semiconductor Manufacturing β€” IIoT

MQTT Edge ML XGBoost SCADA AWS IoT

Real-time wafer defect detection system using a 5-layer IIoT architecture with edge ML. Achieved 94.5% detection accuracy and < 50 ms latency using XGBoost at the edge. Designed MQTT/OPC-UA data pipeline from sensor to cloud.

UAV Dynamic Landing β€” Vision Line Tracking

MATLAB/Simulink Control Systems Computer Vision

Real-time vision-based line tracking controller for dynamic UAV landing designed in MATLAB Simulink. Validated stable closed-loop tracking behaviour in simulation. End-to-end controller from perception to actuation command.


Tech Stack

Python C++ ROS2 MuJoCo PyTorch OpenCV MATLAB MoveIt2 Open3D Isaac Lab Gazebo TensorFlow Jetson Nano Arduino Raspberry Pi SolidWorks Allen Bradley


Achievements

πŸ₯‰ Honeywell Γ— ASU Hackathon 2026 β€” 3rd Place Β· $2,500 Robotic tube insertion for heat exchangers using chamfered alignment, vibration self-alignment, and linear actuation. Validated with 3D-printed prototypes.
πŸ₯ˆ Los Alamos National Lab Γ— ASU 2025 β€” 2nd Place Β· $5,000 Designed automated mechanical unpacking and sequencing system for MinION Flow Cells under time constraints.
πŸ“„ Publication Β· IJRASET Β· February 2023 Design and Inverse Kinematics Analysis of Cable-Suspended Parallel Robot FarmPet for Agricultural Application
πŸ”¬ GHOST Lab Β· Arizona State University Hands-on operation of Fetch, YuMi, Husky, UR5, and TurtleBot platforms for HRI research

GitHub Stats



Building intelligent systems that bridge the gap between simulation and reality.

Pinned Loading

  1. project-eleven.github.io project-eleven.github.io Public

    Project Eleven: Developing an agile quadruped robot using physics-based simulation and reinforcement learning. Starting with a bipedal prototype to understand locomotion dynamics, then scaling to f…

    HTML 1

  2. mujoco-depth-reconstruction mujoco-depth-reconstruction Public

    Simulating depth perception and 3D surface reconstruction with a robotic arm in MuJoCo.

    Jupyter Notebook

  3. Voice-Operated-Mobile-Manipulator-Turtlebot-Mycobot Voice-Operated-Mobile-Manipulator-Turtlebot-Mycobot Public

    This project combines TurtleBot4 and MyCobot robotic arm with voice control for navigation and manipulation. Built using ROS 2, it integrates real-time object detection, speech processing, and sens…

    Python 5 1

  4. UAV-Dynamic-Landing-Line-Tracking UAV-Dynamic-Landing-Line-Tracking Public

    Autonomous UAV system using visual feedback for color-based line tracking and dynamic landing on a moving platform. Developed using MATLAB, Simulink, and Python with real-time control logic.

    M 1

  5. Maze-Solving-6-DOF-Robotic-Arm Maze-Solving-6-DOF-Robotic-Arm Public

    Solved a printed maze lying on a table with laser-mounted end-effector of a robotic arm MyCobot 600 Pro

    Jupyter Notebook

  6. Cable-Suspened-Parallel-Robot-for-Agricultural-Applications Cable-Suspened-Parallel-Robot-for-Agricultural-Applications Public

    1