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Lesson 9: Mars Exploration Partner

Now that our Rover can skillfully avoid obstacles, let’s teach it a new trick - following a target! In this mission, we’ll transform our obstacle-avoiding rover into a loyal companion that can follow you around.

What’s the difference between following and avoiding?

  • Avoiding: Steer away from objects (like dodging rocks)

  • Following: Move toward objects (like following a friend)

Get ready to code your very own Mars exploration buddy!

Learning Objectives

  • Combine ultrasonic and infrared sensors to create a following rover

  • Program your Mars Rover to automatically track and follow a moving target

Creating Your Following Rover

  1. First, Connecting the APP to GalaxyRVR.

  2. Now, open your saved project in Lesson 8.

    ../_images/8_follow_open.png

  3. Save a copy to keep your original project safe. Click “Save as a copy.”

    ../_images/8_follow_save_copy.png

  4. Give your new project a fun name like “Mars Follower” or “Rover Buddy.”

    ../_images/8_follow_save_rename.png

  5. Remove the “move forward” blocks from the end of each sensor event. Our follower should stop and wait after each action.

    ../_images/8_follow_save_remove_forward.png

  6. Now let’s reprogram the IR sensors! Change the turning directions so the rover turns TOWARD the target instead of away from it.

    ../_images/8_follow_save_re_turn.png

  7. Finally, update the ultrasonic sensor behavior. Instead of backing away, make it move FORWARD when it detects a target in front.

    ../_images/8_follow_save_re_ultra.png

Amazing! Your GalaxyRVR is now your Mars exploration partner. Test it out:

  • Walk beside it → it turns to face you

  • Stand in front → it moves toward you

  • Move away → it stops and waits

Your rover buddy is ready to follow you on your next space adventure!