So,what are we going to learn today.
Revolution of robots
Basics of robots
Propulsion system, Chassis, battery
Wired robot
Wireless robot
Obstacle race bot
Robot with weapons
First things first
What is a robot???
It is a electromechanical system that helps reduce human effort.
However, if you are starting out making your first robot, do not think of the complicated, high technology and functional robot. Simple robot will need two wheels and the ability to move forward, move backward, move left and move right. This is the simplest robot you can do, enough to help you learn the basics. Hopefully, through your mistakes in your first robot, you can develop your second robot with more functionality.
A simple bot may look something like this:
BASICS of ROBOTICS:
A simple robot/bot that can move forward, backward and can take turns
Basic need are design plan, chassis, driving system, steering mechanism, circuitry, wheels and power supply.
Controlling to robot
Before getting started to build robots make sure you have the following tools
DMM(Digital multimeter)
Soldering iron and solder wire
Hand drill
Nuts and bolts
Screws and screw driver
Wires, wire cutter/stripper
Insulation tape
Nails
Driving system:
Motors
Different Types:
DC motor(6v,12v)
Geared DC Motor
Stepper motor
(Used for autonomous bots)
Servo motor
As beginner we use DC motors, stepper and servo will come later.
A DC motor has two leads, If we apply +ve to one lead and –ve to other the motor will turn in one direction, when the connections are interchanged the motor runs in opposite direction. If we +ve or –ve to both leads then braking occurs.
Power supply:
Power is supplied to the circuit and the motors.
12volt DC rechargeable batteries are generally used for robotics competitions
Ni-Cd batteries have high power to weight ratio. Of course they are more costly than lead acid batteries.
Batteries can be charged with a 12v adapter.
Circuitry:
Bots can be made wireless or wired, or both.
First lets take up wireless manual bot
The drawback of this circuit is that it works on 6volts,for robotics competitions we need 12volt power supply.
To understand the circuitry we’ll see the working of a relay.
The wireless circuit can be obtained from a toy car.
These are also called RF(Radio Frequency) controlled toys.
These circuits respond to a specific frequency.
Different circuits respond to frequencies like 27MHz,35MHz,49MHz.
