# Case 02 - A Light-controlled Dog



## Purpose 
---
Program to make XGO go forward in strong light and get down if the light gets weak. 



## Materials Required
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1 × micro:bit XGO Robot Kit 



## Hardware Connections
---
Connect the micro:bit with the computer. 

![](./images/microbit-xgo-robot-kit-22.png)



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

![](./images/microbit-xgo-robot-kit-10.png)



## Program
---


Add the XGO extensions. 

![](./images/microbit-xgo-robot-kit-11.png)

![](./images/microbit-xgo-robot-kit-12.png)

![](./images/microbit-xgo-robot-kit-13.png)

![](./images/microbit-xgo-robot-kit-14.png)



## Program
---
#### Code



![](./images/microbit-xgot-robot-kit-case01-out-of-the-square-02.png)



Link: [A Light-controlled Dog](https://makecode.microbit.org/_YVJe8eefmbqo)

You can also download it directly 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:_YVJe8eefmbqo" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div> 



## FAQ
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If XGO doesn't move, please try adjusting the light intensity. 



## Exploration
---
How to give more commands to XGO with light intensity?