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
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

About

Welcome to the Microsoft MakeCode editor for the LEGO® MINDSTORMS® Education EV3!

Programming: Blocks or JavaScript

You can program the LEGO® MINDSTORMS® Education EV3 using Blocks or JavaScript in your web browser:

brick.buttonEnter.onEvent(ButtonEvent.Bumped, () => {
    motors.largeA.run(50)
})
brick.buttonEnter.onEvent(ButtonEvent.Bumped, () => {
    motors.largeA.run(50)
})

The editor works in most modern browsers. It works offline once loaded and doesn’t require any installation. Take a look at some of the features of the editor.

Using LEGO® MINDSTORMS® Education NXT

The MakeCode editor works with LEGO® MINDSTORMS® Education EV3. To create code for LEGO® MINDSTORMS® Education NXT, you need to download the software to program it.

Compile and Flash: Your Program!

When you have your code ready, you connect your EV3 Brick to a computer with a USB cable so it appears as an attached drive (named EV3).

Compilation to machine code from Blocks or JavaScript happens in the browser. You save the binary program to a .uf2 file, which you then copy to the EV3 drive. The process of copying will flash the device with the new program.

Bluetooth support

Experimental support for Bluetooth download is now available. Please read the Bluetooth page for more information.

Simulator: Test Your Code

You can run your code using the LEGO® MINDSTORMS® Education EV3 simulator, all inside the same browser window. The simulator has support for the EV3 Brick screen, buttons, sensors, and motors.

brick.buttonEnter.onEvent(ButtonEvent.Bumped, () => {
    motors.largeA.run(50)
    motors.mediumD.run(50)
    sensors.touch1.pauseUntil(ButtonEvent.Pressed)
    sensors.ultrasonic4.pauseUntil(UltrasonicSensorEvent.ObjectDetected)
})

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