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In this activity, students learn how to use the mBot Line-Follower Sensor to trigger actions.


  • Learn to how the mBot Line-Follower Sensor operates.
  • Use the output of the Line-Follower Sensor to trigger events in mBot’s code.
  • Apply an understanding of the mBot Line-Follower Sensor to mimic the actions required of real-world autonomous vehicles.
  • Practice writing code and troubleshooting when problems arise.

Sensors and Equipment

This experiment features the following sensors and equipment. Additional equipment may be required.

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This experiment is #M5 of Coding with mBot: Self-Driving Vehicles. The experiment in the book includes student instructions as well as instructor information for set up, helpful hints, and sample graphs and data.

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