# case 07 Light Follow ## Our Goal --- - Make the ring:bit car to light follow. ## 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. ![](./images/MT6Y00d.png) ## Software --- [makecode](https://makecode.microbit.org/#) ## Coding --- ### Step 1 - Click on "Advanced" in the MakeCode Drawer to see more code sections. ![](./images/2qCyzQ7.png) - Search for “ringbitcar” and click on the ring:bit car package to add it to your project. (As below picture) ![](./images/1Wq2Mov.jpg) ***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. ![](./images/RFccHpJ.png) ### 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. ![](./images/i1lAR3X.png) ### Program Program Link:[https://makecode.microbit.org/_K3J3EhLamU80](https://makecode.microbit.org/_K3J3EhLamU80) 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. ![](./images/e1PY6hc.gif) ## Think --- - How can you make a smart car to detect the fire? ## Questions --- ## More Information ---