1. Mechanical Designs and Motors

2. Arena

3. Aspects of Robotics Robotics Mechanical aspects Actuators
Motors (DC Motors, Servo, Stepper, Encoder)
Hydraulics
Pneumatics
Basic structure
Mechanisms
Electronic aspects
Micro-controller(Arduino)
Motor drivers(L293, L298, MOSFET)
Remote control (PS2, DPDT switches)

4. Actuators
An actuator is a type of motor for moving or controlling a mechanism or system. It is operated by a source of energy.
Types of actuators:
Electric motors
DC motor,
Servos,
Stepper,
Encoder
Pneumatics
Hydraulics

5. DC Motors These are simple motors used for simple purpose.
Speed can be reduced by reducing the voltage supplied, however that’s not an efficient way of doing things.
Torque and speed are inversely proportional. Generally a 100rpm – 300rpm motor is used as the wheels of a robot .
Never apply voltage more than applied voltage.
Rated voltage is generally 6V, 12V or 24 V

6. Mechanisms
Rigid bodies connected by joints in order to accomplish a desired force and/or motion transmission constitute a mechanism.
Gripping mechanism,
Hands of a robot is referred to gripper.
Lifting mechanism
Will be used to lift the gripper.

7. Motion Transfer mechanisms
Rotation to linear motion
Rack and pinion
Power screw
Conveyer belt
Rotation to rotation motion
Gears(spur, bevel, worm etc.)

8. Power screw
Rack and pinion
Conveyer belt

9. Spur gear
Bevel gear
Worm gear

10. Types of Grippers
4-Bar mechanism:
Ends stay Parallel.
Good
Universal

11. Roller gripper:
Slow,
Simple,
Misalignment problem

12. Power screw gripper
Slow
Self Locking.

13. Lifting mechanisms Pulleys Sliders 4-Bar linkage mechanism
Scissor mechanism

14. Pulley lifting mechanism

15. Sliders
They move linear
Combine pulley and sliders for lifting

16. 4-Bar linkage
Parallelogram mechanism.
Object moves parallel.

17. Scissor mechanism

18. Wheels Wheels for plastic shaft motor Omni wheel ATV wheel
Mecannum wheel

19. Switches