# Case 07: AI Lens Line Follower Car ## Purpose Build a line following car with the bricks and the AI lens. ![](./images/05035_01.png) ## Products Link [ELECFREAKS Smart AI Lens Kit](https://shop.elecfreaks.com/products/elecfreaks-smart-ai-lens-kit?_pos=1&_sid=d572dc26c&_ss=r) [ELECFREAKS Nezha Breakout Board](https://shop.elecfreaks.com/products/elecfreaks-nezha-breakout-board?_pos=1&_sid=327dd9f18&_ss=r) [ELECFREAKS High-Speed Building Blocks Motor](https://shop.elecfreaks.com/products/elecfreaks-high-speed-building-blocks-motor?_pos=4&_sid=1012c2d84&_ss=r) ### Materials Required and Connection Diagram Connect the AI Lens to the IIC port and the two motors on M1,M2 ports on the Nezha expansion board as the picture shows. ![](./images/05035_07_07.png) Build a car with the bricks below. ![](./images/05035_07_01.png) ![](./images/05035_07_02.png) ![](./images/05035_07_03.png) ![](./images/05035_07_04.png) ![](./images/05035_07_05.png) ## MakeCode Programming ### Step 1 Click "Advanced" in the MakeCode drawer to see more choices. ![](./images/05001_04.png) We need to add a package for programming. Click "Extensions" in the bottom of the drawer and search with "PlanetX" in the dialogue box to download it. ![](./images/05001_05.png) ***Note:*** If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu. ### Step 2 ### Code as below: ![](./images/05035_07_06.png) ### Link Linkļ¼š[https://makecode.microbit.org/_D3objUWFo5YA](https://makecode.microbit.org/_D3objUWFo5YA) You may also download it directly below:
### Result The car moves along with the line with the guidance of the AI lens.