6. case 04 Smart Wardrobe

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6.1. Goal


  • Make an auto window.

6.2. Materials


  • 1 x Smart home Kit

  • 1 x corrugated board

6.3. Background


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.

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6.4. Practical operation


Materials: corrugated board and cutter

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Build as below picture:

Front side:

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Back side:

../../_images/hvyJ9Ow.jpg

Paste devices as below piture:

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6.5. Hardware connect


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6.6. Software


makecode

Edge Connector Data Sheet

6.7. Programming


Step 1

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

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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.

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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.

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Step 3

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

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Step 4

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

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Step 5

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

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Programming

Make code:https://makecode.microbit.org/_PyELU94qWPYD

You also could directly download program visit website as below:

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6.8. Result


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

Front side: ../../_images/2JsAZKA.jpg

Back side: ../../_images/rGIkINB.jpg

6.9. Think


How to know wether open the window on room temperature.

6.10. Questions


6.11. More information