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Robotics Competition

Robotics Competition. Understanding the Concepts. Rules. No more than 60 seconds per question 10 points for any question answered correctly 3 Bonus points to the first group that gives the correct answer if the original group gets it wrong

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Robotics Competition

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  1. Robotics Competition Understanding the Concepts 1

  2. Rules • No more than 60 seconds per question • 10 points for any question answered correctly • 3 Bonus points to the first group that gives the correct answer if the original group gets it wrong • Winner is the group with the total number of points after all three rounds

  3. Question 1 • The main function of resistors is any circuit is to • Store energy • Grow stem cells • Reduce the flow of current through the circuit • Prevent water from flowing • Cause electrochemical bonding

  4. Question 2 • The order of control for your robot is: • You  Computer Program  Basic Stamp Chip  Servos  Wheels • Basic Stamp Chip  You  Computer Program  Wheels  Servos • You  Basic Stamp Chip  Servos  Computer Program  Wheels • Computer Program  Basic Stamp Chip  Servos  Wheels You

  5. Right Left Question 3 • From the above figure, • The RCtime for the left wheel is greater • The RCtime for the right wheel is greater • Both RCtimes are equal • It is not possible to tell which RCtime is greater

  6. Question 4 • I want my robot to move forward in full speed, which of the following commands is correct if the left wheel is connected to port 12 and the right wheel is connected to port 13 ? A. Pulsout 13, 500 Pulsout 12, 500 B. Pulsout 13, 500 Pulsout 12, 1000 C. Pulsout 13, 1000 Pulsout 12, 500 D. Pulsout 13, 1000 Pulsout 12, 1000 E. Pause 20

  7. Question 5 Low 12 Low 13 • What does the above code do? • Powers up ports 12 and 13 • Resets port 12 and powers up port 13 • Resets ports 12 and 13 • Resets port 13 and powers up port 12 • Moves the left wheel bacwards

  8. Question 6 This is what you want: Which of the following commands is correct? Note: fwd_pulse moves the robot fwd left_pulse moves the robot left right_pulse moves the robot right Deadband = 7 A. If abs(left_photo-right_photo) < 7 then fwd_pulse if left_photo > right_photo then right_pulse if left_photo < right_photo then left_pulse Right B. If abs(left_photo-right_photo) > 7 then fwd_pulse if left_photo > right_photo then right_pulse if left_photo < right_photo then left_pulse Left C. If abs(left_photo-right_photo) < 7 then fwd_pulse if left_photo < right_photo then right_pulse if left_photo > right_photo then left_pulse D. If abs(left_photo-right_photo) < 7 then fwd_pulse if left_photo > right_photo then right_pulse if left_photo > right_photo then left_pulse

  9. Question 7 • Suppose the left wheel is connected to p12 and the right wheel is connected to p13, what does the following code do? • Makes the robot move forward • Makes the robot move backwards • Makes a left turn • Makes a left spin • Makes a right turn pulsout 12, 1000 pulsout 13, 1000

  10. Question 8 • If your robot takes 125 pulse counts to travel 50cm, how many resolutions does it take to travel 150cm • 375 • 100 • 150 • 139 • 250

  11. Question 9 • If the resistance of a photoresistor is increased, its RCtime will • Become greater • Become Smaller • Remain the same • Be reversed • Disappear

  12. Question 10 Room A Room B Which of the following is true? • I need a higher deadband in Room A because the RCtimes of the sensors will be higher in Room A • I need a higher deadband in Room A because the RCtimes of the sensors will be lower in Room A • I need a higher deadband in Room B because the RCtimes of the sensors will be higher in Room B • I need a higher deadband in Room A because the RCtimes of the sensors will be lower in Room B

  13. 11 ‘ robot moves forward • What does the above code do? • Makes the robot move forward • Makes the robot think about moving forward • Makes the right and left wheels move in opposite directions • Nothing • Confuses the robot

  14. Question 12 • A finite loop: • Makes the robot confused • Helps the robot differentiate between light and darkness • Tells the robot when to start and stop executing a command • Resets the robot when the battery is dead • Moves the left and right wheels in opposite directions

  15. Question 13 • The purpose of introducing a deadband is • To make the photo-sensors see different colors • To prevent the robots from hitting the wall • To awaken the dead cells of the circuit • To prevent the robot from changing directions unnecessarily • To kill the wheels of the robot

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