# Case 01: Hovering at A Defined Altitude

##  Introduction 
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- Program to make the micro:bit Drone:bit Kit take off and hover for 10 seconds, then it lands to the ground. 

## Products Link
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- 1 x [Drone:bit Kit](https://www.elecfreaks.com/micro-bit-drone-bit-kit-without-micro-bit-board.html)


## Picture
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![](./images/Drone-bit-02.png)


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

![](./images/Drone-bit-case-01-01.png)

For programming, we need to add a package: click “Extensions” at the bottom of the MakeCode drawer and search with “https://github.com/elecfreaks/pxt-Dronebit” in the dialogue box to download it.

![](./images/Drone-bit-case-01-02.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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![](./images/Drone-bit-case-01-03.png)

***Notice:*** It is suggested to pause for 2 seconds or longer after triggering the take-off command to make sure the operator run away from the drones in case of any hurting accidents.  

Link: [https://makecode.microbit.org/_cu82jPKtwa2E](https://makecode.microbit.org/_cu82jPKtwa2E)

You can also download it directly: 

<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:_cu82jPKtwa2E]" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>  



## Result
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- The micro:bit Drone:bit Kit takes off and hovers for 10 seconds, then it lands to the ground. 

## FAQ
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***Notice:*** For better locating of the drones, a complicated groud is prefered. If the groud is in single color, the drones might not locate them well.