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case 04 Smart Wardrobe


Make an auto window.


1 x ELECFREAKS micro:bit Smart Home Kit 1 x corrugated board


What is an auto window ?

Noise pollution is a common problem in our life. When the value of noise higher than 70dB, it is will impact our health. We will design a smart window and door using micro:bit.

Auto window operation

Using micro:bit detect wether the the value of noise higher than 70dB and control servo to closing the door and the window.

Practical operation

Materials: corrugated board and cutter

Build as below picture:

Front side:

Back side:

Paste devices as below piture:

Hardware connect



Edge Connector Data Sheet


Step 1

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

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.

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 on from Basic, snap into servo write pin, set P1 to 0.

Step 3

Snap set item to into forever, assignment value of noise to noise variables.

Step 4

If value of noise > 70dB, snap into servo write pin,set P1 to 0 and the window be closed.

Step 5

If value of noise < 70dB,snap into servo write pin,set P1 to 100 and the window be opened.


Make code:

You also could directly download program visit website as below:


micro:bit driving servo open the window when value of noise > 70dB.

Front side:

Back side:


How to know wether open the window on room temperature.


More information