# Case 42：The Grabbing Cart

## Introduction
Build a grabbing cart with the [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). 

![](./images/42_1.png)

## Quick to Start


### Materials Required

[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)

### Assembly

Components List

![](./images/neza-inventor-s-kit-case-42-02.png)

Build it as the assembly steps suggest: 

![](./images/neza-inventor-s-kit-step-42-01.png)

![](./images/neza-inventor-s-kit-step-42-02.png)

![](./images/neza-inventor-s-kit-step-42-03.png)

![](./images/neza-inventor-s-kit-step-42-04.png)

![](./images/neza-inventor-s-kit-step-42-05.png)

![](./images/neza-inventor-s-kit-step-42-06.png)

![](./images/neza-inventor-s-kit-step-42-07.png)

![](./images/neza-inventor-s-kit-step-42-08.png)

![](./images/neza-inventor-s-kit-step-42-09.png)

![](./images/neza-inventor-s-kit-step-42-10.png)

![](./images/neza-inventor-s-kit-step-42-11.png)

![](./images/neza-inventor-s-kit-step-42-12.png)

![](./images/neza-inventor-s-kit-step-42-13.png)

![](./images/neza-inventor-s-kit-step-42-14.png)

![](./images/neza-inventor-s-kit-step-42-15.png)

![](./images/neza-inventor-s-kit-step-42-16.png)

![](./images/neza-inventor-s-kit-step-42-17.png)

![](./images/neza-inventor-s-kit-step-42-18.png)

![](./images/neza-inventor-s-kit-step-42-19.png)

![](./images/neza-inventor-s-kit-step-42-20.png)

![](./images/neza-inventor-s-kit-step-42-21.png)

![](./images/neza-inventor-s-kit-step-42-22.png)

![](./images/neza-inventor-s-kit-step-42-23.png)

![](./images/neza-inventor-s-kit-step-42-24.png)

![](./images/neza-inventor-s-kit-step-42-25.png)

![](./images/neza-inventor-s-kit-step-42-26.png)

![](./images/neza-inventor-s-kit-step-42-27.png)

![](./images/neza-inventor-s-kit-step-42-28.png)

![](./images/neza-inventor-s-kit-step-42-29.png)

![](./images/neza-inventor-s-kit-step-42-30.png)

![](./images/neza-inventor-s-kit-step-42-31.png)

![](./images/neza-inventor-s-kit-step-42-32.png)

![](./images/neza-inventor-s-kit-step-42-33.png)

![](./images/neza-inventor-s-kit-step-42-34.png)

![](./images/neza-inventor-s-kit-step-42-35.png)

![](./images/neza-inventor-s-kit-step-42-36.png)

![](./images/neza-inventor-s-kit-step-42-37.png)

![](./images/neza-inventor-s-kit-step-42-38.png)

![](./images/neza-inventor-s-kit-step-42-39.png)

![](./images/neza-inventor-s-kit-step-42-40.png)

![](./images/neza-inventor-s-kit-step-42-41.png)

![](./images/neza-inventor-s-kit-step-42-42.png)

![](./images/neza-inventor-s-kit-step-42-43.png)

![](./images/neza-inventor-s-kit-step-42-44.png)

We can see that the construction is completed as shown in the following figure:

![](./images/neza-inventor-s-kit-case-42-01.png)

### Connection Diagram
---
Connect the [geekservo](https://shop.elecfreaks.com/products/elecfreaks-360-degrees-building-blocks-servo?_pos=1&_psq=servo&_ss=e&_v=1.0) to S1 and the two [motors](https://shop.elecfreaks.com/products/elecfreaks-high-speed-building-blocks-motor?_pos=4&_sid=a2da3fff8&_ss=r) to M1 and M2 on [Nezha Breakout Board](https://shop.elecfreaks.com/products/elecfreaks-nezha-breakout-board?_pos=1&_sid=00432325a&_ss=rl).

![](./images/neza-inventor-s-kit-case-42-03.png)

## MakeCode Programming



### Step 1

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

![](./images/neza-inventor-s-kit-case-37-04.png)


For programming [Nezha Breakout Board](https://shop.elecfreaks.com/products/elecfreaks-nezha-breakout-board?_pos=1&_sid=00432325a&_ss=rl), we need to add a package. Search with "Nezha" in the dialogue box and click to download it. 

![](./images/neza-inventor-s-kit-case-37-06.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 the picture suggests

![](./images/neza-inventor-s-kit-case-42_07.png)

### Reference

Link: [https://makecode.microbit.org/_VyEFMDLeo2Vs](https://makecode.microbit.org/_VyEFMDLeo2Vs)

You may 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:_VyEFMDLeo2Vs" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>  


### Result

First manually adjust the opening angle of the mechanical claw, then turn on the power, press the button A, the car will travel forward for a certain distance and grab the object.

### Thinking

Is it possible to make a car that can turn directions and grab objects with this kit?

![](./images/42_42.gif)