# case 04 Wireless Remote Control

## Our Goal  
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In this study case, you are going to learn how to make a wireless remote control car based on ring:bit.   

## Material Needed  
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- 1 x Ring:bit Car Kit
- 2 x micro:bit  

## Assembly  
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Please read our pamphlet within the package for the process of ring:bit car assembly. You have to prepare micro:bit and AA batteries by your own.   

## Software  
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[Microsoft MakeCode](https://makecode.microbit.org)  

## Programming  
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### Code of Remote Control  
Please refer to the link:[ https://makecode.microbit.org/_Kcs7pRJ747T6]( https://makecode.microbit.org/_Kcs7pRJ747T6).  

Or, you can download the code directly through the website 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:_Kcs7pRJ747T6" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>

### Code of Ring:bit Car  
Please refer to the link: [https://makecode.microbit.org/_dy4DfHEssKi7](https://makecode.microbit.org/_dy4DfHEssKi7).  

Or, you can download the code directly through the website 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:_dy4DfHEssKi7" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>  

## Result  
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Press button A, the car turns left.   
Press button B, the car turns right.  
Press button A+B, the car moves forward.   
Shake micro:bit, the car moves backward.