## 3.Makecode Extension Libraries

We have made a makecode extension library for this Mecanum robot car V2.0

Add an extension library of the Mecanum robot car V2.0

Please follow the following steps to add extension files:

Open Makecode to enter a certain project → click the gear-shaped icon(for setting) in the upper right corner → choose“**Extensions**”;

![makecode20](./media/Makecode_139fb536.png)

Or click“**Extensions**”, as shown below:

![makecode21](./media/Makecode_905cacbd.png)

Input the link:

```
https://github.com/keyestudio2019/mecanum_robot_v2
```

Tap the searching result “**MecanumRobotV2**” to download and install it, This process may take a few seconds.

![makecode22](./media/Makecode_605b9b18.png)

After the installation, you can find the extension files **Mecanum RobotV2** and **IrRemote** on the left side.

And extension file Neopixel is also installed.

![makecode23](./media/Makecode_0c07886b.png)