The leJOS NXJ Tutorial. Simplified Chinese. The leJOS NXJ Tutorial is a practical guide on how to program the LEGO MINDSTORMS NXT � in Java using. The tutorial will teach you how to write Java programs that control a variety of leJOS NXJ is a Java programming environment for the LEGO MINDSTORMS. The leJOS Tutorial. A practical guide for developers with examples and trails– groups of lessons on a particular subject.

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Note, that at this point the installer checks for any previous installs of leJOS. Make sure that you NXT is connected to your computer with an USB cable and that it has been recognized by the operating system.

Now you can safe the program and then download it into the NXT. This combination enables you to conveniently write software and to quickly test it on the NXT. You can download the latest JDK from http: Eric March 24, Thnx for the detailed tutorial. The order of these steps is very important. Lejos will then function as the operating system of your NXT.

Follow the installation instructions. Replace the endless while loop with this: Help me please…where to get this LibUSB?


Tutorial on how to install and run Java on Lego Mindstorms NXT using Eclipse

The complete HelloWorld program is: You will need to run command-line commands to test your installation and optionally to flash the firmware.

Note, that at this point the installer will check whether the installed fantom driver leios up-to-date. Libusb allows programs to access any USB device on Windows in a generic way.

However, it is possible to revert to the original Lego firmware either by using the Software provided by Lego nzj by using nxjflash. Hi, Thnx for the detailed tutorial.

Getting Started on Microsoft Windows

Then press “OK” and you should see some progess messages, such as: You will receive an almost empty class. Download the latest libusb version for Windows http: We have two additional steps for Windows Vista.

The Sample and Example Projects are also contained in the samples. The next screenshot walks you through these steps.

If this free software has not yet been installed on your computer, it will start the Libusb installation wizard. Unzip the file and start setup.

In case of doubt check the device manager again. Eclipse is a very smart Java leios that tries to compile your program while you write. It should look like the image below.


In short, Lejos needs to know where it has been installed. The later also depends on each specific computer model. Is there anything special we need to do when installing the software on our server so we can access it across the school?

Open a command line prompt as described above and either type the command nxjflash or nxjflashg followed by hitting the Enter key.

We will create a HelloWorld class in the default tutodial package:. Kai February 6, I can download this version? If you have more NXTs to update, click “Yes”. The NXT will then play a soft pulsing sound that signals its readiness. Tutoria, classes are then merged together into a single file, namely HelloWorld. By omitting the parameter, nxjupload will just upload the file and it will not executed automatically. Your email address will not be published.

This can be worked around by adding a line to the setup. Xiretza December 13,