# Case 54: Happy Seesaw ## Introduction Make a seesaw with [Nezha 48 IN 1 Inventor's Kit](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-nezha-48-in-1-inventors-kit-without-micro-bit-board?_pos=2&_sid=ed1b6fbd2&_ss=r). ![](./images/neza-inventor-s-kit-case-54-01.png) ## Quick to Start ### Materials Required [Nezha 48 IN 1 Inventor's Kit](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-nezha-48-in-1-inventors-kit-without-micro-bit-board?_pos=2&_sid=ed1b6fbd2&_ss=r) ### Assembly Steps Component Details ![](./images/neza-inventor-s-kit-case-54-02.png) Build it as the assembly steps suggest: ![](./images/neza-inventor-s-kit-step-54-01.png) ![](./images/neza-inventor-s-kit-step-54-02.png) ![](./images/neza-inventor-s-kit-step-54-03.png) ![](./images/neza-inventor-s-kit-step-54-04.png) ![](./images/neza-inventor-s-kit-step-54-05.png) ![](./images/neza-inventor-s-kit-step-54-06.png) ![](./images/neza-inventor-s-kit-step-54-07.png) ![](./images/neza-inventor-s-kit-step-54-08.png) ![](./images/neza-inventor-s-kit-step-54-09.png) ![](./images/neza-inventor-s-kit-step-54-10.png) ![](./images/neza-inventor-s-kit-step-54-11.png) ![](./images/neza-inventor-s-kit-step-54-12.png) ![](./images/neza-inventor-s-kit-step-54-13.png) ![](./images/neza-inventor-s-kit-step-54-14.png) ![](./images/neza-inventor-s-kit-step-54-15.png) ![](./images/neza-inventor-s-kit-step-54-16.png) ![](./images/neza-inventor-s-kit-step-54-17.png) ![](./images/neza-inventor-s-kit-step-54-18.png) ![](./images/neza-inventor-s-kit-step-54-19.png) ![](./images/neza-inventor-s-kit-step-54-20.png) ![](./images/neza-inventor-s-kit-step-54-21.png) ![](./images/neza-inventor-s-kit-step-54-22.png) ![](./images/neza-inventor-s-kit-step-54-23.png) ![](./images/neza-inventor-s-kit-step-54-24.png) ![](./images/neza-inventor-s-kit-step-54-25.png) ![](./images/neza-inventor-s-kit-step-54-26.png) ![](./images/neza-inventor-s-kit-step-54-27.png) ![](./images/neza-inventor-s-kit-step-54-28.png) ![](./images/neza-inventor-s-kit-step-54-29.png) ![](./images/neza-inventor-s-kit-step-54-30.png) ![](./images/neza-inventor-s-kit-step-54-31.png) ![](./images/neza-inventor-s-kit-step-54-32.png) ![](./images/neza-inventor-s-kit-step-54-33.png) ## Connection Diagram As the picture suggests,connect the sonar:bit to J1,connect the [Motors](https://shop.elecfreaks.com/products/elecfreaks-high-speed-building-blocks-motor?_pos=4&_sid=a2da3fff8&_ss=r) to the [Nezha](https://shop.elecfreaks.com/products/elecfreaks-nezha-breakout-board?_pos=1&_sid=00432325a&_ss=r) M1. ![](./images/neza-inventor-s-kit-case-54-03.png) ## MakeCode Programming ### Step 1 Click “Advanced” in the MakeCode drawer to see more choices. ![](./images/neza-inventor-s-kit-case-37-04.png) For programming the servo, we need to add a package. Click “Extensions” at the bottom of the drawer and search with “nezha” to download it. ![](./images/neza-inventor-s-kit-case-37-06.png) *Notice*: If you met a tip indicating that some codebases would be deleted due to incompatibility, you may continue as the tips say or create a new project in the menu. ### Step 2 ### Write the program as picture suggests ![](./images/neza-inventor-s-kit-case-54-07.png) ### Reference Link: [https://makecode.microbit.org/_2bfKgv7KbVVV](https://makecode.microbit.org/_2bfKgv7KbVVV) You may also download it directly:
### Result When there is an obstruction in front of it. the objects will be pushed down automatically.