Devoxx4Kids Lego

Stephen Chin

Java Community Manager

JavaOne Content Co-Chair

@steveonjava

LeJOS EV3

EV3

> TI Sitara AM1808

ARM9, 300Mhz

> 64MB RAM / 16MB Flash

> -

> 4

> 4

> Bluetooth / USB

> MicroSD

EV3

EV3

LeJOS

> Micro SD Card (> 2GB)

> WIFI

NetGear WNA1100

EDIMAX EW-7811Un

> Linux (or a Linux VM)

> :

SD

http://sourceforge.net/p/lejos/wiki/Home/

Lego Duke Segway

Windows USB 1: (driver), Device Manager

13 Credit to the ev3dev team for the great screen captures and writeup: http://www.ev3dev.org/docs/tutorials/connecting-to-the-internet-via-usb/?tabs-0=windows-7-8

Windows USB 2: Device Manager, EV3s RNDIS. Network Adapters > USB Ethernet/RNDIS Gadget.

14 Credit to the ev3dev team for the great screen captures and writeup: http://www.ev3dev.org/docs/tutorials/connecting-to-the-internet-via-usb/?tabs-0=windows-7-8

Windows USB 3: Driver. Update driver .

15 Credit to the ev3dev team for the great screen captures and writeup: http://www.ev3dev.org/docs/tutorials/connecting-to-the-internet-via-usb/?tabs-0=windows-7-8

Windows USB 4: Browse my computer for driver software.

16 Credit to the ev3dev team for the great screen captures and writeup: http://www.ev3dev.org/docs/tutorials/connecting-to-the-internet-via-usb/?tabs-0=windows-7-8

Windows USB 5: Let me pick from a list of device drivers on my computer.

17 Credit to the ev3dev team for the great screen captures and writeup: http://www.ev3dev.org/docs/tutorials/connecting-to-the-internet-via-usb/?tabs-0=windows-7-8

Windows USB 6: Show compatible hardware. Manufacturer, Microsoft Corporation ( Windows 8, Microsoft). Network Adapter, Remote NDIS Compatible Device. Next.

18 Credit to the ev3dev team for the great screen captures and writeup: http://www.ev3dev.org/docs/tutorials/connecting-to-the-internet-via-usb/?tabs-0=windows-7-8

Windows USB 7: Windows , , Yes.

19 Credit to the ev3dev team for the great screen captures and writeup: http://www.ev3dev.org/docs/tutorials/connecting-to-the-internet-via-usb/?tabs-0=windows-7-8

Windows USB 8: , Close.

20 Credit to the ev3dev team for the great screen captures and writeup: http://www.ev3dev.org/docs/tutorials/connecting-to-the-internet-via-usb/?tabs-0=windows-7-8

Eclipse

> Eclipse

> "Preferences

> leJOS EV3

> IP lego

( 10.0.1.1)

21

LeJOS

> "File" > "New" > "Project

> LeJOS EV3

22

> ("File" > "New" > "Class")

> (.. sample)

> (.. LCDTest)

23

LeJOS

public class EV3FirstProgram {

public static void main(String[] args) {

LCD.clear();

LCD.drawString("First EV3 Program", 0, 5);

Button.waitForAnyPress();

LCD.clear();

LCD.refresh();

}

}

Stephen Chin tweet: @steveonjava

blog: http://steveonjava.com

nighthacking.com

Real Geeks

Live Hacking

NightHacking Tour

Hacking!

1

2

1

2

1

2

1

2

1

1

1

,

46

> Port A

> Port B

> Port 1

47

1

EC:

EC:

public class WindTurbine {

public static void main(String[] args) {

EV3MediumRegulatedMotor fan =

new EV3MediumRegulatedMotor(MotorPort.A);

fan.setSpeed(1500);

fan.setAcceleration(150);

fan.backward();

Delay.msDelay(10000);

}

}

public class WindTurbine {

public static void main(String[] args) {

EV3LargeRegulatedMotor base =

new EV3LargeRegulatedMotor(MotorPort.B);

base.setSpeed(80);

base.rotateTo(-90);

base.rotateTo(90);

}

}

public class WindTurbine {

public static void main(String[] args) {

EV3ColorSensor light =

new EV3ColorSensor(SensorPort.S1);

float[] sample = new float[1];

SensorMode mode = light.getAmbientMode();

mode.fetchSample(sample, 0);

LCD.drawString("Light = " + sample[0], 0, 4);

Delay.msDelay(5000);

}

}

> :

1.

2.

3.

4.

http://commons.wikimedia.org/wiki/Wind_generator#mediaviewer/File:Eolienne_et_centrale_thermique_Nuon_Sloterdijk.jpg

Stephen Chin tweet: @steveonjava

blog: http://steveonjava.com

nighthacking.com

Real Geeks

Live Hacking

NightHacking Tour

. . , . , , Oracle Oracle.