Page 124 - KEC Khaitan C8.2 Flipbook
P. 124
MOBILITY & MOTOR CHAPTER
CONTROL B5
Learning Outcomes 95%
By the end of this lesson, students will:
explain how DC motors function and why motor drivers (L298N, L293D) are essential.
identify key components of a motor driver and how they enable forward/reverse motion.
assemble a basic robot chassis, attach wheels, and provide appropriate power.
build and program a Bluetooth-Controlled Robot Car using block-based coding.
In the previous lesson, you learned how to wirelessly control your Arduino using Bluetooth. Now,
it’s time to take your projects on the move. By combining DC motors with dedicated motor
drivers, you can turn a stationary circuit into a roaming robot. In this lesson, you’ll discover
how DC motors work, why they need specialized drivers (like the L298N or L293D), and how to
assemble everything into a Bluetooth-Controlled Robot Car that responds to your commands
and drives around on wheels!
THE BASICS OF DC MOTORS
HOW DC MOTORS WORK
Definition: A DC (Direct Current) motor converts electrical energy into mechanical energy
through electromagnetic interactions.
Key Components: Rotor (armature), stator (magnet), brushes, commutator.
Common Uses: Toys, fans, and robot drive systems.
Why Are DC Motors Used in Robotics?
Provide precise speed and directional control.
Are compact and efficient for small-scale automation.
Can be controlled using motor drivers and Arduino.
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