Your own MakeCode project (With pairing needed)

You can create a Bluetooth-enabled MakeCode project yourself. Below are the detailed instructions to create a micro:bit MakeCode project, enable the Bluetooth extension and enable JustWorks pairing. A project with pairing enabled makes sure that only those devices/computers that are paired to it can connect to it.

However, it also has a few disadvantages

• it does not work for a micro:bit v1.x on windows
• it requires the extra steps of pairing the micro:bit with your operating system
• A paired micro:bit does not advertise its name, so you cannot find it by name

Create a project

In MakeCode for micro:bit, select "New Project"

Enter a name:

Add the Bluetooth extension

You'll need to add the Bluetooth extension.
Select "Advanced"

Select "Extensions"

Search for Bluetooth, and select the Bluetooth extension

A popup appears, informing you that the "radio" extension will be removed if you add Bluetooth. Select "Remove extension and add Bluetooth", this will only apply to this project.

Enable pairing

In the top-right corner click on the cog icon and select project settings. Enable the "JustWorks pairing (default): Pairing is automatic once the pairing is initiated" option. Save the Settings.

Add Bluetooth services

Now you can select blocks from the bluetooth tab:

Drag the services you want to enable in an "On start" block

The micro:bit v1 has too little memory to enable all bluetooth services. If you try to enable them all, after copying the hex the micro:bit, the LED display wil show a sad face and then scroll 020, this means the micro:bit is out of memory. See also: the micro:bit error codes

Download the hex file

Download the hex file and copy it to your micro:bit!