Sound Sensor Functionality Quiz

Robot Programming: Sound Sensor

• Session 1 Objectives: Students should be able to explain the use of sound sensors in robotics, describe how a sound sensor works, use code blocks to program a sound sensor, and create a device that uses a sound sensor as an alarm.

• Engage Activity: Identify robot sensors (G, A, N, C, E, F, E).

• Explore Activity Questions:

  • Is sound important?
  • Why or why not?
  • What does sound/music give to us?

• Explain (Session 1):

  • The Me Auriga board has a built-in sound sensor, allowing sound wave measurement without external sensors.
  • The sound sensor is an input device that converts sound waves into electrical signals using a microphone.
  • It measures the intensity of sound waves, unlike ultrasonic sensors that measure distance.
  • Key programming blocks for the Land Raider sound sensor are needed.

• Explain (Session 1): Programming Blocks:

  • Open Console: Opens a display window to show sound intensity (in decibels).
  • Print: Displays the sound sensor's value (intensity) in the debug window.
  • Sound Sensor On-Board Loudness: Measures sound loudness using the built-in sensor.
  • When Starts Up: Starts a code block when the program first starts.
  • Forever: Loops a code block repeatedly during the entire program.

• Explain (Session 1): Programming Steps:

  • Open the Miranda Simulator
  • Select the scene (Creators 2: L7-S1-Programming a Robot: Sound Sensor).
  • Drag and connect command blocks.
  • Enter the appropriate values in each block.
  • Click Run to start the simulation.
  • Record the output and submit.

• Elaborate (Session 1):

  • Sound intensity measurements in the Miranda simulator are specific to the particular scene; they will vary between simulations.

• Evaluate (Session 1, Part A): True/False Questions:

  • Sound sensors detect sound waves through microphones. (True)
  • Sound sensors convert sound waves to electrical signals. (True)
  • The Forever Block measures sound intensity changes. (False)
  • External sound sensors are needed to program the Land Raider. (False)

• Evaluate (Session 1, Part B): Correct Block Combinations:

  • For measuring sound intensity only at the start of the simulation, use "When starts up," "Open console," and "Print sound sensor on-board loudness". (B)
  • For measuring sound intensity while a key is pressed, consider the block combination "When a key is pressed", "Open console", and "Print sound sensor on-board loudness. (B)

• Evaluate (Session 1, Part C): Correct Blocks for Sound Intensity: The block combination that shows the sound wave intensity is "When o key is pressed", "Open console", and "Print sound sensor on-board loudness". (A)

• Evaluate (Session 1, Part D): Robot Output Actions: The correct answer is "The robot turns left and shows the value of sound intensity at the same time." (B)

• Evaluate (Part E): Print Statement: The Print "sound sensor on-board loudness" block is the one to print the sound intensity value.

Robot Programming: Sound Sensor (Session 2)

• Guided Activity (Session 2):

  • The robot programs an ultrasonic sensor to automatically move and react on obstacles it detects when their distance is less than 15cm away from the sensor.
  • When it detects an obstacle (closer than 15 cm), it stops for one second and moves backward for two seconds, then turns left for one second.
  • If the obstacle is further away (farther than 15cm), it moves forward.

• Guided Activity (Session 2, Part B): Programming steps for the Miranda Simulator.

  • Open the Miranda application and enter the correct connection code, username, and password.
  • Use the cloud icon to open the necessary scene.
  • Select the scene: Creators 2: L7-S1-Programming a Robot: Sound Sensor.

• Independent Activity (Session 2):

  • Emergency robots use sound sensors to detect noise, helping them locate and rescue individuals.
  • The objective is to program a robot that moves forward if it detects sound waves higher than 25 decibels.
  • Key questions to answer:
    • What blocks are needed?
    • How to use these blocks to detect sound intensity?
    • What is the lowest and highest sound intensity this sensor can detect?

• Independent Activity (Session 2, part B): Questions to answer

  • What operator to use for comparing decibel intensity?
  • What would happen if the robot only had the Move Forward block outside the Forever Block?
  • Can the Less Than Block be used for conditional statements?
  • What happens if the calculated sound intensity is below the set value?
  • What happens if the decibel value is set to its maximum range allowed?

• Independent Activity (Session 2, part C): Rubric

  • Criteria for grading robot program using the Miranda Simulator.
  • Focus areas: Understanding of variables, program efficiency, and ability to follow instructions. A rubric is available to score.