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case 08 Light Follow

Our Goal​

  • Make the ring:bit car to light follow.

Requiered Materials​

Hardware Connect​

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

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 on start block from the Basic and initialize the P1 port to left wheel and the P2 port to right wheel.

Step 3​

  • Snap the light level from the Input. The car will move to the light source when the light level is greater than the defined value.
  • The car will spin around to find the light source when the light level is less than the defined value.

Program​

Program Link：https://makecode.microbit.org/_H7c7DPWTPYKY

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

Result​

  • The car spins around and will move to the light source when it is detecting the light.

Think​

  • How can you make a smart car to detect the fire?

Questions​

More Information​