11. case 01 Full speed ahead

11.1. Our Goal

• To make the Ring:bit Car to go ahead and reverse.

11.2. Requiered Materials

• 1 x Ring:bit Car

11.3. Hardware Connect

• Connect the left wheel servo to P1 of the Ring:bit expansion board and the right wheel servo to P2.

11.4. Software

makecode

11.5. 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 block go straight at full speed into the On start block.

• The port number is based on the actual servo connection port.

Step 3

• Snap the go straight at full speed block into the on button A pressed block.

Step 4

• Snap the reverse at full speed block into the on button B pressed block.

Program

Program Link：https://makecode.microbit.org/_5md9ofDyRigh

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

11.6. Completed!

• When button A is pressed, the car will go straight at full speed.

• When button B is pressed, the car will reverse at full speed.

11.7. Think

How can you make your car to stop when button A is pressed ?

11.8. Questions

11.9. More Information