# Case 34: Gesture Recognition Car

## Introduction

This is a simple car. We can install gesture recognition sensors on the car to control the car’s driving route based on gestures.

![](./images/case_34_01.png)

## Quick Start

### Materials Required

Nezha expansion board × 1

micro:bit V2 × 1

Motors × 2

Gesture sensor × 1

Bricks × n

***Tips: You may need to purchase [Nezha Inventor's Kit](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-nezha-48-in-1-inventors-kit-without-micro-bit-board?_pos=2&_sid=ed1b6fbd2&_ss=r) and [Purchase Interactive coding accessories pack here.](https://shop.elecfreaks.com/products/elecfreaks-interactive-coding-accessories-pack?_pos=1&_sid=c75dad35f&_ss=r) if you want all the above components.***




### Connection Diagram 

Insert the micro:bit, connect the motors to M1and M4 and the gesture sensor to IIC port on the Nezha expansion board as the picture shows.


![](./images/case_34_03.png)



### Assembly Video


link: [https://youtu.be/ib-xX0MS41U](https://youtu.be/ib-xX0MS41U)

<iframe width="560" height="315" src="https://www.youtube.com/embed/ib-xX0MS41U" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

### Assembly Steps

![](./images/case_step_34_01.png)

![](./images/case_step_34_02.png)

![](./images/case_step_34_03.png)

![](./images/case_step_34_04.png)

![](./images/case_step_34_05.png)

![](./images/case_step_34_06.png)

![](./images/case_step_34_07.png)

![](./images/case_step_34_08.png)

![](./images/case_step_34_09.png)

![](./images/case_step_34_10.png)

![](./images/case_step_34_11.png)

![](./images/case_step_34_12.png)

![](./images/case_step_34_13.png)

![](./images/case_step_34_14.png)

![](./images/case_step_34_15.png)

![](./images/case_step_34_16.png)

![](./images/case_step_34_17.png)

![](./images/case_step_34_18.png)

![](./images/case_step_34_19.png)



## MakeCode Programming


### Step 1

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

![](./images/case_01_10.png)




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

![](./images/case_03_09.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. 

### Step 2

### Code as below:


![](./images/case_34_10.png)



### Reference
Link: [https://makecode.microbit.org/_WkPER99xMP8e](https://makecode.microbit.org/_WkPER99xMP8e)

You may 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:_WkPER99xMP8e" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>  


### Result
After powering on, the car moves along with the indicated gestures. 

![](./images/case-gif-34.gif)