11. Case 08: Run Along the Black Line#

11.1. Purpose#


  • The Cutebot runs along the black line.

11.2. Materials#


11.3. Software Platform#


MicroSoft makecode

11.4. Programming#


Step 1#

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

../../_images/cutebot-pk-13.png

  • A codebase is required for Cutebot programming, click “Add Package” at the bottom of the drawer, search [Cutebot](https://www.elecfreaks.com/micro-bit-smart-cutebot.html) in the dialogue box and download it.

../../_images/cutebot-pk-111.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_022.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_011.png

Programming#

Links: https://makecode.microbit.org/_1A0PqrDTDTp3

You can also download it directly below:

11.5. Result#


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

11.6. Exploration#


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

11.7. FAQ#


11.8. Relevant Files#