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show string show number show value show mood show image clear screen show ports on event is pressed was pressed pause until set light battery level
run stop reset set brake set inverted set regulated tank steer angle speed clear counts stop all motors
on event pause until is pressed was pressed
angle rate reset
on event distance pause until
on event distance pause until
on event pause until is pressed was pressed set remote channel
on color detected pause until color detected on light detected pause until light condition detected color light
play sound effect play sound effect until done play tone ring tone stop all sounds rest change tempo by set tempo note frequency beat set volume
seconds millis reset pause until
log log value send to screen
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repeat for while for of
if Boolean
assign change var var
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JavaScript
Calling Sequencing Variables Operators Statements Functions Types Classes Interfaces Generics
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Wake Up! Make An Animation What Animal Am I? Music Brick Run Motors Tank ZigZag Touch to Run Touch Sensor Values What Color? Line Following Red Light, Green Light Reflected Light Measure Reflected Light Calibration Object Near? Security Alert
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Autonomous Parking Object Detection Line Detection
Design Engineering
Make It Move Without Wheels Make It Smarter and Faster Make a System that Communicates
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Documentation
About FAQ Projects GitHub Troubleshoot EV3 Manager Bluetooth Forum LEGO Support FIRST LEGO League
Reference
show string show number show value show mood show image clear screen show ports on event is pressed was pressed pause until set light battery level
run stop reset set brake set inverted set regulated tank steer angle speed clear counts stop all motors
on event pause until is pressed was pressed
angle rate reset
on event distance pause until
on event distance pause until
on event pause until is pressed was pressed set remote channel
on color detected pause until color detected on light detected pause until light condition detected color light
play sound effect play sound effect until done play tone ring tone stop all sounds rest change tempo by set tempo note frequency beat set volume
seconds millis reset pause until
log log value send to screen
Blocks
On Start
repeat for while for of
if Boolean
assign change var var
Math JavaScript blocks Custom blocks
Python
Calling Sequencing Variables Operators Statements Functions Classes
JavaScript
Calling Sequencing Variables Operators Statements Functions Types Classes Interfaces Generics
Types
Number String Boolean Array Function
Developers
Command Line Interface Visual Studio Code support Blocks Embed
Getting Started
Try Use
Tutorials
Wake Up! Make An Animation What Animal Am I? Music Brick Run Motors Tank ZigZag Touch to Run Touch Sensor Values What Color? Line Following Red Light, Green Light Reflected Light Measure Reflected Light Calibration Object Near? Security Alert
Coding
Autonomous Parking Object Detection Line Detection
Design Engineering
Make It Move Without Wheels Make It Smarter and Faster Make a System that Communicates
Maker
Make a Sound Machine Make a Security Gadget

Bluetooth

This page describes the procedure to download MakeCode program to the EV3 brick over Bluetooth.

WARNING: EXPERIMENTAL FEATURES AHEAD!

Support for Bluetooth download relies on Web Serial, an experimental browser feature. Web Serial is a work in progress; it may change or be removed in future versions without notice.

By enabling these experimental browser features, you could lose browser data or compromise your device security or privacy.

Supported browsers

To make sure your browser is up to date, go to the ‘…’ menu, click “Help” then “About”.

Next you need to enable the experimental features (this may change in the future)

  • go to chrome://flags/#enable-experimental-web-platform-features and enable Experimental Web Platform features

A screenshot of the flags page in chrome

Machine Setup

  • pair your EV3 brick with your computer over Bluetooth. This is the usual pairing procedure.

Download over Bluetooth

  • go to https://makecode.mindstorms.com/
  • click on Download to start a file download as usual
  • on the download dialog, you should see a Bluetooth button. Click on the Bluetooth button to enable the mode.
  • make sure the EV3 brick is not running a program
  • click on Download again to download over bluetooth.

Choosing the correct serial port

Unfortunately, the browser dialog does not make it easy to select which serial port is the brick.

  • On Windows, choose Standard Serial over Bluetooth. There might be multiple of those but only one works. Try your luck! Once you know the COM port number, remember it for the next time around.
  • On Mac OS, choose cu.BRICKNAME-SerialPort

Known issues

  • We do not detect properly that the program is running on the brick. Make sure to stop the program before starting the download procedure.
  • The list of programs on the brick screen is not updated when uploading via bluetooth.

Feedback

Please send us your feedback through https://forum.makecode.com.

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