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    2.  Design a Planar or Spatial Mechanism in Tinkercad

                             Task: Using Tinkercad  (free online  tool),  create  a simple  2D planar mechanism  (like  a scissor  or piston
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                             system) and a simple 3D spatial mechanism (like a robotic arm with 3 joints). Try moving parts to simulate
                             their motion.
                             Output: Screenshots or a short video showing your models, along with a short note explaining how degrees
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                             of freedom were applied in your design.
                             Learning Outcome: Apply theoretical knowledge of planar vs. spatial mechanisms in a virtual lab environment.
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                      3.  Compare Materials and Wheels for Robots
                             Task: Research four materials (MDF, Acrylic, Aluminium, Steel) and two wheel types (Mecanum, Omni).
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                             Create a table comparing their strength, cost, weight, and best application. For example: MDF (low-cost
                             prototypes), Aluminium (drones, robotic arms), Mecanum wheels (tight-space navigation).
                             Output: A comparative chart with pros, cons, and a suggested “best use case” for each material and
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                             wheel type.
                             Learning Outcome: Develop decision-making skills in mechanical design—understanding why
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                             engineers choose specific materials and mobility systems for different robots.

                                                                 AT A GLANCE

                            A Frame is a coordinate system (with an origin and a set of three perpendicular axes, typically labelled X, Y,
                            and Z) that provides a reference for defining the position and orientation of objects within that system.
                            In robotics, we primarily deal with two types of reference frames: Fixed Frames and Moving Frames.
                            The term Degrees of Freedom refers to the number of independent parameters that define the configuration
                            of a system.

                            A Planar  Mechanism  is  a mechanical  system  where all the links and joints  move  within a single, two-
                            dimensional plane.

                            A Spatial Mechanism is a mechanical system where the motion of its links and joints is not confined to a
                            single plane.

                            A Planar Open-Chain Mechanism is a series of rigid links connected by joints, where the entire structure is
                            confined to moving within a single, two-dimensional plane.
                            Different Components of a Robot include Frames, Materials, and Wheel Types.
                            A Coordinate System is a system that uses one or more numbers, or coordinates, to uniquely determine the
                            position of a point or other geometric element on a manifold, such as Euclidean space.
                            Resolution refers to the smallest incremental movement that a robot can detect or achieve.
                            Accuracy is the ability of a robot to position its end-effector precisely at a desired location in three-dimensional
                            space.
                            Repeatability is a robot’s ability to return to a specific position under identical conditions repeatedly.

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                                                                                                              Mechanical System

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