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Introduction @unplugged
Get a quick introduction to programming with EV3.
We are excited to help you get started with @boardname@. In this project we will guide you through connecting your EV3 Brick, creating your first program, controlling a Large Motor, a Touch Sensor and a Color Sensor. These steps can take up to 45 minutes.
Turn on your EV3 Brick @unplugged
Power on your EV3 Brick by pressing the Center Button.
Connect Your EV3 Brick to Your Device @unplugged
Use the USB cable to connect your EV3 Brick to your device.
Handle a button press @fullscreen
Drag out a ||brick:on button|| block from Buttons section in the ||brick:Brick|| Toolbox drawer.
brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
})
Change of mood @fullscreen
Drag a Brick Screen ||brick:show mood|| block inside the ||brick:on button|| block.
Change mood to neutral.
brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
brick.showMood(moods.neutral)
})
Simulate @fullscreen
Try out your code in the simulator!
Click the center button on the EV3 Brick in the web page. It should display the mood you selected on the screen. Don't hesitate to use the simulator to try out your code during this tutorial!
Play some tunes @fullscreen
Drag a Music ||music:play sound effect|| block below the ||brick:show mood|| block.
Change sound effect to communication hello.
brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
brick.showMood(moods.neutral)
music.playSoundEffect(sounds.communicationHello)
})
Download to your brick @unplugged
Download: Click Download and follow the instructions to get your code onto your EV3 Brick. Press the center button on the EV3 Brick to run the program.
Did It Work?
Verify that the program you just created shows eyes on the Brick Display, and that the EV3 Brick played the sound “Hello!”
Well done!
Connect a Large Motor @unplugged
Now you will learn to control the Large Motor.
Connect a Large Motor to Port D of your EV3 Brick using any of the connector cables.
Run a motor @fullscreen
Drag a ||motors:run large A motor|| block inside the ||brick:on button|| block.
brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
motors.largeA.run(50)
})
Tune your motor @fullscreen
Change large motor A to large motor D.
Click on the (+) sign and change to 1 rotation.
brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
motors.largeD.run(50, 1, MoveUnit.Rotations)
})
Download @unplugged
Download: Click Download and follow the instructions to get your code onto your EV3 Brick. Press the center button on the EV3 Brick to run the program.
Did It Rotate?
Confirm that your motor has turned one rotation at power level 50 before stopping.
Download and run the program as many times as you want in order to verify this, or tinker with different power levels and different rotations.
Connect a Touch Sensor @unplugged
We will now control the Large Motor using a Touch Sensor.
Keeping the Large Motor connected to Port D, connect a Touch Sensor to Port 1 of your EV3 Brick.
Modify Your Program @fullscreen
- Add a
||sensors:pause until touch 1 pressed||Sensor block on top of the||motors:run large motor D||block.
brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
sensors.touch1.pauseUntil(ButtonEvent.Pressed)
motors.largeD.run(50, 1, MoveUnit.Rotations)
})
Download @unplugged
Download: Click Download and follow the instructions to get your code onto your EV3 Brick. Press the center button on the EV3 Brick to run the program.
Press the Touch Sensor
Confirm that the Large Motor has turned one rotation AFTER you press the Touch Sensor.
Download and run the program as many times as you want in order to verify this, or tinker with different Touch Sensor and Large Motor values.
Connect a Color Sensor @unplugged
Now we will try to control the Large Motor using another sensor.
Keeping the Large Motor connected to Port D, connect the Color Sensor to Port 4.
Update your code @fullscreen
Using the same program, replace the ||sensors:pause until touch 1|| block with a ||sensors:pause color sensor 3|| for color block.
brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
sensors.color3.pauseUntilColorDetected(ColorSensorColor.Green)
motors.largeD.run(50, 1, MoveUnit.Rotations)
})
Don't forget to select the color you want to detect (e.g., green)!
Download @unplugged
Download: Click Download and follow the instructions to get your code onto your EV3 Brick. Press the center button on the EV3 Brick to run the program.
Place a Colored Brick in Front of the Color Sensor
Confirm that the Large Motor has turned one rotation AFTER the Color Sensor has detected the colored brick.
Download and run the program as many times as you want in order to verify this, or tinker with different Color Sensor and Large Motor values.
JavaScript @fullscreen
Click on the JavaScript tab and change the color the Color Sensor detects to Black, Blue, Green, Yellow, Red, White, or Brown. Use Title Case for the color names.
brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
sensors.color3.pauseUntilColorDetected(ColorSensorColor.Blue)
motors.largeD.run(50, 1, MoveUnit.Rotations)
})
Well Done! @unplugged
You have now learned how to control some of the inputs and outputs of the EV3.