# Case 03: Round Fly 

##  Introduction
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- Program to make the drone fly to a preset place and then get back. 

## 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-03-03.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/_7zU0qEMPVcqT](https://makecode.microbit.org/_7zU0qEMPVcqT)

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:_7zU0qEMPVcqT]" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>  

## Result
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- After taking off, it flys forward for 100cm and lands to the ground, then it starts flying back in 100cm by rotating 180 degress, then it lands to the ground.