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End Effector

                 End effector is fixed at the end of the manipulator. Manipulators are usually fixed and End effectors
                 are the parts that are free to move and perform tasks. They are expected to perform the tasks
                 similar to those of human fingers and palm of a human hand. The end effectors usually do the work.
                 They are attached to the robot's wrist and controlled through a computer.






















                 Different types of End Effectors

                 There are mainly two categories of end effectors which are grippers and tools. Gripper, at the end of
                 a robotic arm, is the most commonly used end effector in various robots like Mars rovers which may
                 use hammers and shovels. On the other hand, Medical robots have specialised end effectors such as
                 tools for cutting in surgery and suturing incisions.

















                 Locomotion Device

                 Human beings use muscles to give movements to their arms, palms and fingers. For a robot, the
                 power for movement comes from motors. Three fuels are used in locomotion, depending on the
                 energy source.

                 There are three widespread types of Locomotive devices.
                    Electric: This uses magnets and electric current to facilitate movement. They are noiseless and
                   easy to program.

                    Hydraulic: This uses oil to facilitate movement. They are used in heavy machinery, which includes
                   mining and construction equipment.

                    Pneumatic: This uses air to facilitate movement. They are used in Rock drills, pavement breakers,
                   paint sprayers, etc.

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