17. Case15: Speed Adjustable TPBot

17.1. Purpose

Adjust the speed of the TPBot with the potentiometer.

17.2. Material

1 x TPBot

../../_images/TPBot_tianpeng_case_01_01.png

17.3. Hardware connection

Connect potentiometer to port 1 on TPBot.

../../_images/TPBot_tianpeng_case_15_02.png

17.4. Software

MicroSoftmakecode

17.5. 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

Link

Link：https://makecode.microbit.org/_ArRM71PD6de0
You may also download it directly below:

17.6. Conclusion

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

17.7. Exploration

17.8. 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.