Introduction-to-Robots.pdf

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What is Robot?
• Powered by Electricity.
• Programmed to carry out certain tasks, like cleaning, etc.
• Senses the environment using sensors and reacts
accordingly on its own.

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Classification of Robots
• A robot can be controlled by humans, either directly, or
remotely, from a place far away.
• A robot can take decisions and work entirely on its own;
such robots are called ‘autonomous robots’.
• here also exist robots that can move from one place to
another; they are known as ‘mobile robots’.
• There are robots, autonomous robots, mobile robots, and
then, there are autonomous mobile robots like obstacle
avoiding robots.

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Application of Robots
• Industry: For handling and moving materials.

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• Space: For exploring outer space. E.g., the Curiosity
Rover

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• Hospital: Surgical robots, réhabilitation robots, pharmacy
robots, etc.

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• Agriculture: For tasks such as vegetable and fruit
picking.

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• Military: Bomb discarding robots, drone explorations, etc.

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• Households: For cooking, cleaning, and washing
purposes.

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• Entertainment: Humanoids, robot dogs, etc. E.g. Aibo
the robot dog.

Basic Components of
Robot - Hands
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THE ‘HANDS’
• Robot hands are known as end-effectors.
• There different types of end effectors for different
purposes.
• The most common type is a gripper. A gripper allows the
robot to hold objects, carry them, and then release them.
• Grippers come in many sizes and styles so that the
correct ones can be used according to the work to be
done.

Basic Components of
Robot - Feet
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THE ‘FEET’
• Robots need something that will help in moving around.
• Mobile robots move with the help of wheels (generally,
but not necessarily).
• These wheels are attached to the DC motors (actuators)
that turn them, thus helping the robot go places.

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THE ‘FEET’
• For a moving object to be stable, you need at least 3
contact points with the surface on which it is moving.
• For e.g. in a car, you have four wheels, but in a bicycle,
there are only two wheels.
• A cyclist can control the bicycle only when he is cycling,
but if he stops he can’t balance the cycle without resting
one of his feet on the ground.
• In our mobile robot, we will have 2 wheels and one caster
wheel touching the ground. A caster wheel has a small
round sphere, which rolls freely on the ground. It is
passive and can move in any direction.

Basic Components of
Robot - Muscles
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THE ‘MUSCLES’
• A robot also has muscles. They are known as actuators.
• The actuator helps the brain of the robot to respond to
the surrounding environment.
• It helps the robot to move its hands (grippers), and its
feet (wheels and the castor).
• The robots that you will be making consist of DC (direct
current) motors and servo motors as electrical actuators.

Basic Components of
Robot - Skeleton
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THE ‘SKELETON’
• What is a body without a skeleton? Nothing but a soft sac,
without the rigidity, and the shape that defines it.
• Here, the only difference between the robot and us is
that it is not exactly a spongy sac; it is a hard sac, with a
lot of dismantled parts.
• Our skeleton has bones, a robot’s skeleton is a robot
chassis or simply a chassis – it is a frame (in our case a
base plate) onto which everything - the actuators, the
effectors, the wheels, the castor, the grippers, the brain -
is attached and supported.

Basic Components of
Robot - Sensors
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THE ‘SENSES’
• A sensor is a device that detects input from the outside
world and responds to it.
• Just like we have many different types of senses and
different ‘sensors’ for them, such as eyes for seeing,
ears for hearing, nose for smelling, tongue for tasting,
and skin for touching, robots are also capable of sensing
different things such as light, sound, and temperature,
and have many different sensors for them.

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THE ‘SENSES’
• Light Sensors
• Sound Sensors
• Proximity Sensors
• Distance Sensors

Basic Components of
Robot - Brain
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THE ‘e-BRAIN’
• The robot has detected all that is happening around it.
Now, it has to respond to it. But it needs to make sure
that it does to correctly. Who or what is going to tell him
what to do, and how to respond in the right way?
• The brain is responsible for controlling all the senses,
and, functions of the body, such as thinking (I think,
therefore I am), eating, sleeping, and moving the arms
and the legs.
• The robot’s brain also does the same. It controls
what it thinks, what it does, and how it moves its
arms and legs.

Basic Components of
Robot - Commands
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THE ‘e-BRAIN’
• At this moment, our robot’s got everything; right from
the brain down to the feet. But since it is not exactly a
human, it still doesn’t know as of yet what to do and how
to do it.
• You will give commands to the robot and ask it to do
what you want him to, and he has to follow them!
• These commands that we are talking about are nothing
but the instructions that are given by writing a program
for the specified task.

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Smartphone Controlled Robot
• This robot will follow your commands via Bluetooth and
go where you want him to go.

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Follow Me Robot
• This robot will follow you, or anybody else that comes in
front of it.

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Obstacle Avoiding Robot
• This robot avoids obstacle and move autonomously.

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Pick and Place Robot
• This robot will pick objects for you and place them where
you want.

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Stair Climbing Robot
• This robot can work in uneven ground terrains like stairs
and rock.

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Gesture Controlled Robot
• This robot moves according the gesture you make on
your smartphone, like moving forward when you tilt it
forward.

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Line Following Robot
• This robot works autonomously. It has only one work,
follow the black line.

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Dust Cleaning Robot
• This robot has a DIY vacuum cleaner attached to it. This is
controlled using smartphone and can clean your room.

Introduction-to-Robots.pdf

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