# case 03 Auto Windows


![](./images/krV05be.jpg)
## Goal



 Make a smart wardrobe

## Materials


1 x [ELECFREAKS micro:bit Smart Home Kit](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-smart-home-kit-without-micro-bit-board?_pos=1&_sid=ebbf2bf73&_ss=r)
 1 x corrugated board

## Background

### What is smart wardrobe
 Smart wardrobe could automatically open and let people take cloth. A slight push and the door open.At the same time, wardrobe door was setted low noise, it will not disturb sleep.

### Smart wardrobe operation
 Controling crash detect module using micro:bit and receive crash signal.The micro:bit will control servo to open the door with light up when it received signal.

![](./images/Pq9yMxM.png)

## Practical operation

Materials: corrugated board and cutter

![](./images/PuJE7uj.jpg)

Build as below picture：

Front side：

![](./images/lNqGReU.jpg)

Back side：

![](./images/mDXBxp3.jpg)


Paste devices as below piture:

![](./images/8sS6pSt.jpg)


## Hardware connect


![](./images/k1tNYcb.png)





## Software

[makecode](https://makecode.microbit.org/#)

Edge Connector Data Sheet



## Programming

### Step 1
Go to MakeCode page, click Advanced in the code block and click on Extensions.

![](./images/2qCyzQ7.png)

We need to add a new codebase for programming of smart home. Finding “Add Package” in the bottom of code block and click it. Then a message box will show up, search “smart home"， and download this new codebase.

![](./images/QR2s7LD.png)

***Note:*** If there is a hint says some codebase will be deleted because of incompatibility. Don't worry. You could go ahead as the hint or build a new item in item menu bar.


### Step 2

Drag on start from Basic and snap into set pull pin P2 to up.

Drag servo write pin from Pin, choose P7, set P7 to 180° and set door to -1 for closing the door。

![](./images/rNh3b8D.png)

### Step 3

If digital read P2, the door variables will be contrary.If door variables is true, rainbow LED shows
white, servo turns 0 °with door opens and pause 2 seconds.


![](./images/N1sMg3r.png)

### Step 4

If door variables is false, servo turns 180° with door closes, pause 2 seconds and the rainbow
LED off. 

![](./images/twe7XV2.png)


### Programming

Make code：[https://makecode.microbit.org/_2J3VR42c29cw](https://makecode.microbit.org/_2J3VR42c29cw)

You also could directly download program visit website as below:

<div style="position:relative;height:0;padding-bottom:70%;overflow:hidden;"><iframe style="position:absolute;top:0;left:0;width:100%;height:100%;" src="https://makecode.microbit.org/#pub:_2J3VR42c29cw" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>  

## Result

Turning of the servo will drive the door open with rainbow led light up.

Front side：

![](./images/XyAjCbV.jpg)

Back side：

![](./images/mEbCjUQ.jpg)

## Think

How to make a clothes racks ? 

## Questions



## More information