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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