17. case 07 Turns over Detection¶
17.1. Our Goal¶
- Make the car to stop when it turns over.
17.2. Requiered Materials¶
- 1 x Ring:bit Car
17.3. Hardware Connect¶
- Connect the left wheel servo to P1 of the Ring:bit expansion board and the right wheel servo to P2.
17.5. Coding¶
Step 1¶
- Click on “Advanced” in the MakeCode Drawer to see more code sections.
- Search for “ringbitcar” and click on the ring:bit car package to add it to your project. (As below picture)
Note: If you get a warning telling you some packages will be removed because of incompatibility issues, either follow the prompts or create a new project in the Project file menu.
Step 2¶
- Snap the
on start
block from the Basic. Set RainbowLED with 24 leds in RGB format for colorful light and show rainbow from 1 to 360. Then, initialize the P1 port to left wheel and the P2 port to right wheel.
!
Step 3¶
- Set a variable to state for controlling car’s running. Then set state variable unber the logo up block to true and the other to false.
Step 4¶
- Set the rainblw led to colorful lights under the
forever
loop in gradual change. Use the variable state to control car’s running.
Program¶
Program Link:https://makecode.microbit.org/_asoLxTRz4Dg2
If you don’t want to type these code by yourself, you can directly download the whole program from the link below:
17.6. Result¶
- The car runs normally,when it turns over, it stops.
17.7. Think¶
- How can you design more funny project using other kits?