# case 03 Turn at an angle ## Our Goal - To make the Ring:bit Car draw a circle in the clockwise direction. ## Requiered Materials - 1 x [Ring:bit Car](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-ring-bit-v2-car-kit-without-micro-bit-board?_pos=4&_sid=66ba68dec&_ss=r) ## Hardware Connect - Connect the left wheel servo to P1 of the Ring:bit expansion board and the right wheel servo to P2. ![](./images/jBVHea8.png) - Use a rubber band to fix a pencil on the base board of the Ring:bit car. ![](./images/EfYkq79.jpg) ## 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 block `set left wheel at pin P1 right wheel at pin P2` into the on start block. - The port number is based on the actual servo connection port. ![](./images/igG5TVD.png) ### Step 3 - Snap the `set left wheel speed right wheel speed` block into the `on button A pressed` block. - Set the left wheel's speed to 10 and the right to 50. ![](./images/Mnakk7a.png) ### Step 4 - Snap the `brake` block into the `on button B pressed` block. ![](./images/4UStidJ.png) ### Program Program Link:[https://makecode.microbit.org/_YejCA2AJDDVV](https://makecode.microbit.org/_YejCA2AJDDVV) If you don't want to type these code by yourself, you can directly download the whole program from the link below:
## Result - On button A pressed, the car draws a circle. - On button B pressed, stop car. ![](./images/HStJeJY.jpg) ## Think - How can you make your car draw an eight? ## Questions ## More Information