Touch to Run

Introduction @unplugged

Use the Touch Sensor to run a motor.

Step 1

Open the ||sensors:Sensors|| Toolbox drawer. Drag out 2 ||sensors:on touch|| blocks anywhere onto the Workspace.

sensors.touch1.onEvent(ButtonEvent.Pressed, function () {

})
sensors.touch1.onEvent(ButtonEvent.Pressed, function () {

})

Step 2

In one of the ||sensors:on touch|| blocks, use the second drop-down menu to change from pressed to released.

sensors.touch1.onEvent(ButtonEvent.Pressed, function () {

})
sensors.touch1.onEvent(ButtonEvent.Released, function () {

})

Step 3

Open the ||motors:Motors|| Toolbox drawer. Drag out a ||motors:run|| block onto the Workspace, and drop it into the ||sensors:on touch pressed|| block.

sensors.touch1.onEvent(ButtonEvent.Pressed, function () {
    motors.largeA.run(50)
})
sensors.touch1.onEvent(ButtonEvent.Released, function () {

})

Step 4

Open the ||motors:Motors|| Toolbox drawer. Drag out a ||motors:stop|| block onto the Workspace, and drop it into the ||sensors:on touch released|| block.

sensors.touch1.onEvent(ButtonEvent.Pressed, function () {
    motors.largeA.run(50)
})
sensors.touch1.onEvent(ButtonEvent.Released, function () {
    motors.largeA.stop()
})

Step 5

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 EV3 Brick.

Attach a Large Motor to Port A, and a Touch Sensor to Port 1 on your EV3 Brick. Test your program by pressing and releasing the touch sensor – does the motor start and stop as expected?

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