166 lines
5.9 KiB
Markdown
166 lines
5.9 KiB
Markdown
# Try
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Get a quick introduction to programming with EV3.
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We are excited to help you get started with LEGO MINDSTORMS Education EV3. 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.
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## Turn on your EV3 Brick
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Power on your EV3 Brick by pressing the Center Button.
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## Connect Your EV3 Brick to Your Device
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Use the USB cable to connect your EV3 Brick to your device.
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## Create and Run your First Program
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**Code it:** Create the program shown here.
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```blocks
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brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
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brick.showMood(moods.neutral)
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music.playSoundEffect(sounds.communicationHello)
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})
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```
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* Drag out a ``||brick:on button||`` block from Buttons section in the ``||brick:Brick||`` Toolbox drawer.
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* Drag a Brick Screen ``||brick:show mood||`` block inside the ``||brick:on button||`` block.
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* Change mood to ``neutral``.
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```block
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brick.showMood(moods.neutral)
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```
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* Drag a Music ``||music:play sound effect||`` block below the ``||brick:show mood||`` block.
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* Change sound effect to ``communication hello``.
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```block
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music.playSoundEffect(sounds.communicationHello)
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```
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**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.
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## Did It Work?
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Verify that the program you just created shows eyes on the Brick Display, and that the EV3 Brick played the sound “Hello!”
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**Well done!**
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## Connect a Large Motor
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Now you will learn to control the Large Motor.
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Connect a Large Motor to **Port D** of your EV3 Brick using any of the connector cables.
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## Create and Run This Program
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**Code it:** Create the program shown here.
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```blocks
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brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
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motors.largeD.run(50, 1, MoveUnit.Rotations)
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})
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```
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* Start a new program.
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* Drag a ``||motors:run large A motor||`` block inside the ``||brick:on button||`` block.
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* Change ``large motor A`` to ``large motor D``.
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* Click on the **(+)** sign.
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* Change to ``1`` rotation.
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**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.
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## Did It Rotate?
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Confirm that your motor has turned one rotation at power level 50 before stopping.
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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.
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## Connect a Touch Sensor
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We will now control the Large Motor using a Touch Sensor.
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Keeping the Large Motor connected to **Port D**, connect a Touch Sensor to **Port 1** of your EV3 Brick.
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## Modify Your Program
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**Code it:** Add code to the program for the Touch Sensor.
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```blocks
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brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
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sensors.touch1.pauseUntil(ButtonEvent.Pressed)
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motors.largeD.run(50, 1, MoveUnit.Rotations)
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})
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```
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* Add a ``||sensors:pause until touch 1 pressed||`` Sensor block on top of the ``||motors:run large motor D||`` block.
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```block
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sensors.touch1.pauseUntil(ButtonEvent.Pressed)
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```
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**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.
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## Press the Touch Sensor
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Confirm that the Large Motor has turned one rotation AFTER you press the Touch Sensor.
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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.
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## Connect a Color Sensor
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Now we will try to control the Large Motor using another sensor.
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Keeping the Large Motor connected to **Port D**, connect the Color Sensor to **Port 4**.
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**Code it:** Modify Your Program to use the Color Sensor.
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```blocks
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brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
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sensors.color3.pauseForColor(ColorSensorColor.Green)
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motors.largeD.run(50, 1, MoveUnit.Rotations)
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})
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```
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* Using the same program, replace the ``||sensors:pause until touch 1||`` block with a ``||sensors:pause color sensor 3||`` for color block.
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```block
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sensors.color3.pauseForColor(ColorSensorColor.Green)
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```
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* Select the color you want to detect (e.g., green).
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**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.
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## Place a Colored Brick in Front of the Color Sensor
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Confirm that the Large Motor has turned one rotation AFTER the Color Sensor has detected the colored brick.
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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.
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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.
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## Well Done!
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You have now learned how to control some of the inputs and outputs of the EV3.
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