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Page 143 - Toucpad robotics C11
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    21 st
                                                                                                     Century   #Experiential Learning
                                                                                                     Skills
                                      The choice of battery is crucial for mobile robots, as it directly impacts their weight, size, power
                                      capacity,  and  operational  time.  Lithium-ion  (Li-ion)  and  lead-acid  batteries  are  two  common
                                      options, each with its own set of advantages and limitations. How do engineers decide between
                                      lithium-ion and lead-acid batteries for a given robot based on factors such as energy density,
                         deep         power requirements, and cost? How does the power consumption of other components, such as
                       thinking       motors and sensors, influence the battery selection process?

                                                                                           21 st
                        LAB ACTIVITY                                                     Century   #Coding & Computational Thinking
                                                                                          Skills
                          Obstacle Detection with Ultrasonic Sensor

                          ∑   Tools: Arduino Uno, Ultrasonic Sensor (HC-SR04), Buzzer/LED.
                          ∑   Task: Make a system that detects objects and gives an alert.
                          ∑   Steps:
                              1.  Connect ultrasonic sensor to Arduino.
                              2.  Write code: measure distance   if distance < 20 cm   turn ON buzzer/LED.
                              3.  Test with objects at different distances.
                          ∑   Outcome: Students explore sensor integration and closed-loop feedback systems.

                         Answers
                      Exercise (Section A)
                      Quiz
                      A.  1. ii    2. iii    3. ii    4. ii    5. ii    6. ii    7. ii    8. ii    9. i    10. iv
                      B.  1.   Actuators                   2.  Servo                  3.  Sound                4.  Feedback
                          5.  Battery                      6.  Feedback               7.  Brain                8.  Obstacle
                          9.  Steps                       10.  Control
                      C.  1.   False                       2.  True                   3.  False                4.  True
                          5.  True
                      D.  1. c   2. b   3. d   4. a   5. e

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                                                                                                     Electrical and Control Systems

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