38. Case 34: Gesture Recognition Car

38.1. 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.

38.2. 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 and Purchase Interactive coding accessories pack here. 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.

Assembly Video

link: https://youtu.be/ib-xX0MS41U

Assembly Steps

38.3. MakeCode Programming

Step 1

Click “Advanced” in the MakeCode to see more choices.

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.

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:

Reference

Link: https://makecode.microbit.org/_WkPER99xMP8e

You may also download it directly below:

Result

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