Case 27: The Distance Indicator
This is a distance detection device. In order to prevent the spread of the epidemic, people should maintain a certain social distance in public. This device can display the distance between the carrier and the person in front of it on the screen.
Nezha expansion board × 1
micro:bit V2 × 1
sonar sensor × 1
Bricks × n
Tips: You may need to purchase Nezha Inventor's Kit if you want all the above compoents.
Inset the micro:bit, and connect the sonar:bit to J1 port on Nezha expansion board.
Video link: https://youtu.be/0HgP_YVgNJU
Click "Advanced" in the MakeCode drawer to see more choices.
We need to add a package for programming. Click "Extensions" in the bottom of the drawer and search with "nezha" to download it.
Note: If you met a tip indicating the codebase might be deleted due to incompatibility, you may continue as the tips say or create a new project in the menu.
Programme as the pictures indicate
You may download it directly below:
After powering on, the detected distance displays on the micro:bit.