# Case 13: The Seesaw

## Purpose
---
To make a seesaw.
 
![](./images/case-13-01.png)

## Link: 
---
[micro:bit Wonder Building Kit](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-32-in-1-wonder-building-kit-without-micro-bit-board?_pos=5&_sid=2094afd2f&_ss=r)

## Materials Required
---
![](./images/case-13-02.png)

Video link:
[https://youtu.be/2qZLmY6tJRs](https://youtu.be/2qZLmY6tJRs)

## Bricks build-up
---


![](./images/step-case-13-01.png)

![](./images/step-case-13-02.png)

![](./images/step-case-13-03.png)

![](./images/step-case-13-04.png)

![](./images/step-case-13-05.png)

![](./images/step-case-13-06.png)

![](./images/step-case-13-07.png)

![](./images/step-case-13-08.png)

![](./images/step-case-13-09.png)

![](./images/step-case-13-10.png)

![](./images/step-case-13-11.png)

![](./images/step-case-13-12.png)

![](./images/step-case-13-13.png)

![](./images/step-case-13-14.png)

![](./images/step-case-13-15.png)

![](./images/step-case-13-16.png)

![](./images/step-case-13-17.png)

![](./images/step-case-13-18.png)

![](./images/step-case-13-19.png)

![](./images/step-case-13-20.png)

![](./images/step-case-13-21.png)

![](./images/step-case-13-22.png)

![](./images/step-case-13-23.png)

![](./images/step-case-13-24.png)

![](./images/step-case-13-25.png)


## Hardware Connection

Connect a [motor](https://www.elecfreaks.com/geekservo-motor-2kg-compatible-with-lego.html) to M1 port on [Wukong breakout board](https://www.elecfreaks.com/wukong-board-with-lego-holder-for-micro-bit.html).

![](./images/Wonder-Building-Kit-case-13-06.png)


## Software Platform
---
[MakeCode](https://makecode.microbit.org/)

## Coding
---
### Add extensions
Click "Advanced" in the MakeCode to see more choices.
 
![](./images/case-01-03.png)

Search with Wukong in the dialogue box to download it. 

![](./images/case-01-04.png)





### Program
 
![](./images/case-11-03.png)

Link:[https://makecode.microbit.org/_8WiCUt0zu6wv](https://makecode.microbit.org/_8WiCUt0zu6wv)

### Result

When button A is pressed, the seesaw operates automatically and when button B is pressed, the seesaw shuts down and stops operating.