Case 04 Here comes the police

Our Goal

To change the Ring:bit car to a police car.

Requiered Materials

1 x Ring:bit Car

Hardware Connect

Connect the left wheel servo to P1 of the Ring:bit expansion board and the right wheel servo to P2.
Connect the ring:bit car special expansion board to the P0.
Slide the clip switch of the special expansion board to the Rainbow LED.

Software

makecode

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 block set left wheel at pin P1 right wheel at pin P2 to the On start block. The port number is based on the actual servo connection port.
Go straight at full speed.
Set the 2 Rainbow LED of the P0 to RGB color.

Step 3

Within the forever block, snap below blocks in line:
show color red block.
pause(ms) 100 block.
show color blue block.
pause(ms) 100 block.

Program

Program Link：https://makecode.microbit.org/_exPKtyhX46of

If you don't want to type these code by yourself, you can directly download the whole program from the link below: