leJOS

Run Java on the Lego EV3, NXT or RCX

Brought to you by: bbagnall, gloomyandy, jhsolorz, lgriffiths, and 2 others

Downloads: 5 This Week

Last Update: 2016-01-28

leJOS is replacement firmware for LEGO Mindstorms EV3, NXT and RCX bricks. Yes, you can program a LEGO robot with Java!

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xzistor Posted 2020-09-12

I should have started using LeJOS long ago! I have spend the last 10 years developing my own home AI lab - and LeJOS worked a charm. I have pushed it's functionality to its limits and eventually developed a little EV3 Lego robot that evolves intelligence and real emotions (I am not kidding see here: www.xzistor.com). So thankful I was pointed in the direction of LeJOS! I would like to say - do not waste your time on the other EV3 tools out there if you do not like soldering and fixing bugs! Kind regards Xzistor
thorstenstaerk Posted 2014-04-22

I get # ./ev3console No EV3s discovered Failed to connect to EV3 I switched on my EV3, connected it via USB, set JAVA_HOME, set EV3_HOME and started ev3console, what's happening here? Via dmesg I can see that it got recognized as LEGO EV3.
tammypalazzo Posted 2013-06-20

Thanks for software and updates.

1 user found this review helpful.
michaelspencer Posted 2013-01-16

Great project! It is awesome being able to use Java to program the NXT! Plus it works on Linux, which is great, since I don't use Windows and the Mindstorms NXTG software doesn't run on Linux.
a11922256 Posted 2012-12-18

Good and useful software

2000-08-06

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Recommended Projects

TinyVM
A really low footprint (< 10 Kb) Java VM and replacement firmware for the Lego Mindstorms RCX microcontroller, which is part of Lego's Robotics Invention System. TinyVM is the progenitor of <a href="http://lejos.sourceforge.net">leJOS</a>.
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Java for the LEGO EV3 Brick