CAD Design and System Modelingmain
3D Printing and Mechanical Assembly
Electronics Integration and Raspberry Pi 4B Control System
Gait Generation and Motion Control

Legged Robot

I developed a fully custom legged robot, taking the project from concept to functional prototype. I designed and modeled the robot in CAD, 3D-printed all structural components, and assembled and wired the complete system, including servos, drivers, sensors, and power distribution. A Raspberry Pi 4B serves as the onboard compute platform, which I configured for remote programming and real-time control. I implemented gait generation and motion control, and the robot successfully achieved a stable speed of 5cm/s.
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Zahin H Ritee

Project Timeline

Sep 2025 - Dec-2025

HighlightS

Designed, CAD-modeled, and manufactured the full robot chassis and leg mechanism.

Built and wired the full hardware system, including Pi configuration, servo integration, and power management.

Developed walking trajectory code and validated successful autonomous gait execution.

Established remote compute environment for iterative control development and testing.

Initiated reinforcement learning pipeline to improve gait smoothness and speed.

SKILLS

Mechanical design
Solidworks
3D printing
Hardware integration
Wiring and embedded electronics.
Raspberry Pi setup,
Linux environment, remote control, and real-time execution.
Motion control and gait planning
System debugging, iterative testing

The robot was fully designed from the ground up using SolidWorks, beginning with conceptual kinematic layouts and progressing to a complete 3D assembly model. The primary design objective was to create a compact and structurally efficient four-legged robot, ensuring mobility while minimizing overall size and weight. Each structural component was modeled with careful consideration for weight reduction, manufacturability, and seamless actuator integration.

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The design process included defining joint locations, link lengths, and mechanical clearances to ensure stable leg motion and prevent interference during gait cycles. Parametric modeling enabled rapid iteration of dimensions as performance requirements evolved throughout development. The final CAD assembly integrated the chassis, leg mechanisms, servo mounts, and electronics housing into a cohesive and modular structure, allowing straightforward fabrication, assembly, and future maintenance.

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