# Case 07: Auto Lamps 

##  Introduction
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- The auto lamps are able to turn on when the night is approaching and to turn off while the daylight comes. 

## Function
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- Detect the light level with the light sensor on micro:bit, if the light level is too low, program to turn on the lamps; or to turn off the lamps. 


## Products Link
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- 1 x [microbit Smart City Kit](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-smart-city-kit-without-micro-bit-board?_pos=1&_sid=ce30b50b6&_ss=r)

## Picture
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![](./images/microbit-Smart-City-Kit-case-01-02.png)

## Hardware Connection
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Connect the yellow LED to P1 port on IoT:bit. 

![](./images/microbit-Smart-City-Kit-case-07-03.png)

## Software Program

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Click "Advanced" in the MakeCode drawer to see more choices. 

![](./images/microbit-Smart-City-Kit-case-01-04.png)

For programming, we need to add a package: click "Extensions" at the bottom of the MakeCode drawer and search with "iot-environment-kit" in the dialogue box to download it. 

![](./images/microbit-Smart-City-Kit-case-01-05.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. 

## Program

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Detect if the light level is below 100. 

![](./images/microbit-Smart-City-Kit-case-07-07.png)

If yes, set to light on the LED; or light off it. 

![](./images/microbit-Smart-City-Kit-case-07-08.png)


Link: [https://makecode.microbit.org/_RJV5CuH4i1f9](https://makecode.microbit.org/_RJV5CuH4i1f9)

<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:https://makecode.microbit.org/_RJV5CuH4i1f9" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin">
</iframe>
</div>  


## Result
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- If the light level is too low, program to turn on the LED automatically; or to turn off it.