95 lines
2.5 KiB
Markdown
95 lines
2.5 KiB
Markdown
# Using Touch Sensor Values
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## Introduction @unplugged
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Use the Touch sensor value to stop a running motor.
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## Step 1
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Open the ``||brick:Brick||`` Toolbox drawer. Drag an ``||brick:on button||`` block onto the Workspace, and place it anywhere on the Workspace.
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```blocks
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brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
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})
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```
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## Step 2
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Open the ``||motors:Motors||`` Toolbox drawer. Drag out a ``||motors:run||`` block onto the Workspace, and drop it into the ``||brick:on button||`` block.
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```blocks
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brick.buttonEnter.onEvent(ButtonEvent.Pressed, function () {
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motors.largeA.run(50)
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})
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```
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## Step 3
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Open the ``||logic:Logic||`` Toolbox drawer. Drag out an ``||logic:if then||`` block onto the Workspace, and drop it into the ``||loops:forever||`` block.
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```blocks
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forever(function () {
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if (true) {
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}
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})
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```
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## Step 4
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Open the ``||sensors:Sensors||`` Toolbox drawer. Drag out a ``||sensors:touch is pressed||`` block onto the Workspace, and drop it in the ``||logic:if then||`` block replacing ``true``.
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```blocks
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forever(function () {
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if (sensors.touch1.isPressed()) {
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}
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})
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```
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## Step 5
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Open the ``||music:Music||`` Toolbox drawer. Drag out a ``||music:play sound effect||`` block onto the Workspace, and drop it under the ``||logic:if then||`` block.
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```blocks
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forever(function () {
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if (sensors.touch1.isPressed()) {
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music.playSoundEffect(sounds.animalsCatPurr)
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}
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})
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```
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## Step 6
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In the ``||music:play sound effect||`` block, use the drop-down menu to select the ``information touch`` sound effect.
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```blocks
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forever(function () {
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if (sensors.touch1.isPressed()) {
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music.playSoundEffect(sounds.informationTouch)
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}
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})
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```
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## Step 7
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Open the ``||motors:Motors||`` Toolbox drawer. Drag out a ``||motors:stop||`` block onto the Workspace, and drop it in after the ``||music:play sound effect||`` block.
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```blocks
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forever(function () {
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if (sensors.touch1.isPressed()) {
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music.playSoundEffect(sounds.informationTouch)
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motors.largeA.stop()
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}
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})
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```
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## Step 8
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Now, plug your EV3 Brick into the computer with the USB cable, and click the **Download** button at the bottom of your screen. Follow the directions to save your program to the brick.
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Attach a Large motor to Port A, and a Touch sensor to Port 1 on your brick. Test your program by pressing the ENTER button. When the motor starts, press the touch sensor. Does the motor stop as expected?
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