18. Case15: Speed Adjustable TPBot#

18.1. Purpose#

  • Adjust the speed of the TPBot with the potentiometer.

18.2. Material#

../../_images/TPBot_tianpeng_case_01_01.png

18.3. Hardware connection#

Connect potentiometer to port 1 on TPBot.

../../_images/TPBot_tianpeng_case_15_02.png

18.4. Software#

MicroSoftmakecode

18.5. 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

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

../../_images/TPBot_tianpeng_case_15_03.png

Sample#

  • Drag the show icon brick into on start.

  • In forever brick, map the returned value of the potentiometer from 0~1023 to 0~100, and set the mapping value as the speed for the car to move forward.

../../_images/TPBot_tianpeng_case_15_04.png

Conclusion#

  • After powering on, the speed of the TPBot could be adjusted by the potentioneter.

18.6. Exploration#

18.7. FAQ#

Q: While operating this case, why the car might not work properly?
A: It might be the low power of the batteries, please try adding the value of TPBot’s speed and test again.

18.8. Relevant File#