15. Case 12: micro:bit Remote Control

15.1. Purpose

  • Programme to use the mciro:bit to control the TPBot.

15.2. Material

../../_images/TPBot_tianpeng_case_01_01.png

15.3. Software

MicroSoftmakecode

15.4. Programming

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

../../_images/TPBot_tianpeng_case_01_02.png

  • We need to add a package for programming. Click “Extensions” in the bottom of the drawer and search with “tpbot” in the dialogue box to download it.

../../_images/TPBot_tianpeng_case_01_03.png

Sample

Remote Control Part

  • Set the micro:bit showing a set icon and the radio group as 1.
  • After pressing button A, radio send number 1; after pressing button B, radio send number 2; after pressing button A+B, radio send number 3.

../../_images/TPBot_tianpeng_case_12_04.png

Receiving Part

  • Set the micro:bit showing a set icon and the radio group as 1.
  • Save the received number as the variable.
  • Judge if the variable is 1, if yes, set the TPBot turning left at the speed of 30%; if the variable is 2, set the TPBot turning right at the speed of 30%; if the variable is 3, set the TPBot moving forward at the speed of 30%.

../../_images/TPBot_tianpeng_case_12_05.png

Link

Conclusion

  • Power up to show a set icon on the micro:bit, after pressing button A, it turns left; after pressing button B, it turns right; after pressing button A+B, it moves forward.

15.5. Exploration

15.6. FAQ

Q: The car does not work with the code in the wiki.A: It should be the batteries that are lack of power, please try to fix it by adding the value of the speed in the code.

15.7. Relevant File