Lesson 20 Quiz

Color Tracking (Hiwonder 7.5)

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Quiz Questions

1. In the color tracking demo, what is the robot trying to do?

A) Follow a GPS coordinate B) Keep a red target centered by turning toward it C) Detect faces and wave D) Stream video to a TV

2. What color object is used for tracking in the Hiwonder 7.5 outcome description?

A) Red B) Blue C) Green D) Yellow

3. What is “center point tracking”?

A) Keeping the robot at the center of the room B) Keeping the detected target centered in the camera view C) Centering the wheels mechanically D) Matching GPS coordinates to a map

4. In a simple tracking controller, what is “error” usually?

A) targetCenterX − detectedX B) batteryVoltage − 5V C) wheelDiameter − 65mm D) timeNow − timeStart

5. Why are periodic updates (timers) useful in tracking?

A) They make the robot forget commands B) They keep control adjustments smooth and responsive C) They reduce camera resolution D) They make WiFi faster

6. In the Hiwonder example, what motion does the robot perform when tracking the red ball?

A) Rotates in place to follow direction B) Flies upward C) Stops permanently D) Follows a taped line

7. Which change would most likely reduce tracking jitter?

A) Increase speed a lot B) Add a dead zone so tiny errors don’t turn the robot C) Turn off the camera D) Add more background clutter

8. Which value would you use to create a steering correction in tracking?

A) The x-position offset between target and center B) The robot battery label C) The WiFi password D) The serial port name

9. Explain how you would test color tracking safely in a classroom. (Short Answer)

10. Describe one improvement you could make to tracking stability. (Short Answer)

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