Chuck-a-Duck CreateAI Game

Play

In this project, we will build a fun game called ‘Chuck-a-Duck’ that functions similarly to the game ‘Hot Potato’. To create this game, we will use the micro:bit and CreateAI to build a machine learning model that can recognize when the duck is flying versus when it has been caught. We will then expand on this by adding sounds to represent each action, and even utilize the radio function of the micro:bit to enhance the game.

This video tutorial is divided into four main parts:

• Set Up: Recording data samples & training your model
• Activity 1: Coding sounds for each action
• Activity 2: Hot potato game
• Activity 3: Using the radio function between two micro:bits

You can choose to complete all four progressions of the project, or just some.

Prepare

You’ll need the following items to complete this project:

• 1x micro:bit V2
  • Note: We recommend 2x micro:bits to enhance this activity.
• 1x CHARGE for micro:bit
• micro USB cable
• Computer with access to CreateAI or Microsoft MakeCode
• Optional: Stuffed animal or soft object to hold the micro:bit when throwing

Code Your Own

Record Data Samples

Go to CreateAI and start a new project. After connecting and wirelessly pairing your micro:bit, record a series of ‘resting’ or ‘catching’ data samples, as well as ‘throwing’ data samples. Be sure to account for all the different possible variations of catching or throwing. The more samples you record, the more accurate your machine learning model will be.

No time to record samples? Head to the ‘Resources’ section below to download a pre-trained .hex file for this activity.

Train and Test the Model

After you’ve recorded all of your samples you click the ‘train model’ button. The program will then go through a process of analyzing each of the samples to recognize patterns. After training has finished you will be presented with a screen where you can see the percentage of certainty for each action.

Test your actions to see if the machine learning model is accurately predicting each movement. If it’s not, you may need to go back and add additional samples by clicking ‘edit data samples’.

Improve – Activity 3

Think about additional features you could add to your project! How would you modify the sample model and code provided, or create your own that includes the following features?

To get started, we’ve modified our code below to control two micro:bits using radio functionality.

Think about what else you might want to modify to enhance to your program:

• Add sounds that play when each action occurs
• Add a random variable to create the hot potato game
• Use the radio function to relay any sounds or LEDs to another micro:bit

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