Microbit Robotics & Engineering

Beginner

60 mins

Teacher/Student led

+25 XP

What you need:
Chromebook/Laptop/PC
Microbit

Noise Level

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1 What are we measuring?
2 What are we building?
3 Create a new Microbit project
4 Add the DataLogger extension
5 Start the log
Challenge
Quiz

1 - What are we measuring?

Today we’re measuring how loud the environment is.

We are going to be using the Micro:bit's built-in microphone. It doesn’t record sound like a voice memo — instead, it listens for how loud things are around it.

This is called sound level — and it gives us a number between 0 (very quiet) and 255 (very loud).

2 - What are we building?

We’re going to create a noise logger using our Micro:bits.
It will listen to the environment and log the sound level every second.

At the end, we’ll be able to see how noisy things were — and when the loudest moments happened.

You could even use it to check:

Is the classroom louder before or after break?
Which area of the school is the noisiest?

3 - Create a new Microbit project

To get started create a new Microbit project.

makecode.microbit.org

4 - Add the DataLogger extension

To access the blocks we need to program the data logging, you need to add the datalogger extension to your project.

5 - Start the log

Drag out the block:
🧱 set column (sound)
Place it inside the on start block

This will make it easier to read your data.

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Copyright Notice
This lesson is copyright of Coding Ireland 2017 - 2025. Unauthorised use, copying or distribution is not allowed.

Your Answer or Description of Your Work

Project URL This can be a link to your project (e.g. a Scratch, Microbit, Arcade or CodePen URL link).

Upload File

You must be logged into Scratch to share your project, otherwise the link will not work.

To get the URL link of your Scratch project:

Make sure you're logged into Scratch.
Click on the Share button in the project editor.
Click on the Copy Link button.
Click on the Copy Link link. This will save the URL of your project page into your clipboard.

To get the URL link of your Microbit project:

Click on the button in the project editor.
Click on the Publish Project button.
Click on the Copy button. This will save the URL of your project page into your clipboard.

To get the URL link of your Arcade project:

Click on the button in the project editor.
Click on the Publish Project button.
Click on the Copy button. This will save the URL of your project page into your clipboard.

To get the URL link of your CodePen project:

Make sure you're logged into CodePen.
Open your project in the editor.
Click on the Save button at the top of the editor.
Copy the link from the address bar in your web browser (e.g. https://codepen.io/Jane-Smith/pen/gOVXxBQ)

Noise Level

Teacher Class Feed

1 - What are we measuring?

Send your work to your teacher

2 - What are we building?

Send your work to your teacher

3 - Create a new Microbit project

Send your work to your teacher

4 - Add the DataLogger extension

Send your work to your teacher

5 - Start the log

Send your work to your teacher

Unlock the Full Learning Experience