10. Case 08: Run Along the Black Line

10.1. Purpose


  • The Cutebot runs along the black line.

10.2. Materials


  • 1 x Cutebot kit

  • 1 x Line-tracking Map(Homemade or enclosed in the Cutebot Kit)

10.3. Software Platform


MicroSoft makecode

10.4. Programming


Step 1

  • Click the “Advanced” to see more choices in the MakeCode drawer.

../../_images/cutebot-pk-1.png

  • A codebase is required for Cutebot programming, click “Add Package” at the bottom of the drawer, search Cutebot in the dialogue box and download it.

../../_images/cutebot-pk-11.png

Note: If you met a tip indicating incompatibility of the codebase, you can continue with the tips or build a new project there.

Step 2

  • Choose “show icon” in the On startbrick. ../../_images/case_01_021.png

Step 3

  • Drag three if bricks into the Forever brick.

  • Judge if the status of line-tracking sensors is ○ ●, saying the left probe doesn’t detect the black line while the right probe detects the black line.

  • Set the left wheel speed to 50 and right to 25, make a right turn by the different speed of the two wheels and go back to the black line.

  • Judge if the status of line-tracking sensors is ● ○ and make a left turn to go back to the black line.

  • When the status is ● ● that means the Cutebot runs along with the black line at the speed of 50.

../../_images/case_08_01.png

Programming

Links: https://makecode.microbit.org/_brF6tzUKwess

You can also download it directly below:

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10.5. Result


  • The Cutebot runs along the black line and will adjust to run back to the black line if any deviation happens.

10.6. Exploration


  • How to program to make the Cutebot run in the white background of the map excluding the black line circle part?

10.7. FAQ


10.8. Relevant Files