Lejos - A few Java programs for controlling a Lego EV3 robot

This project describes how-to get Java 8 running on an EV3 brick.

A few simple programs are included to demonstrate how the EV3 works.

Required:

• Lego Mindstorms EV3 set
• WiFi dongle for EV3 (I use the Edimax)
• Micro SD-card (between 2GB and 32GB)
• Computer running linux/unix/os x
• Java 8 installed
• Gradle installed
• SSH installed and configured
• Your favorite Java IDE

diskutil list sudo dd -if=./sd500.img -of=/dev/disk2

copy the contents of lejosimage directory to SD-card root

create JRE 8 embedded runtime. EV3 brick requires profile compact2

./jrecreate.sh --dest ejre-8-b132-linux-arm-sflt.tar.gz --profile compact2 --vm client tar -czf ejre-8-b132-linux-arm-sflt ejre-8-b132-linux-arm-sflt.tar.gz

Copy this tar.gz file to the root of the SD-card.

Insert SD-card into

The SSH version on the mindstorm is a bit old, connect using: ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 root@192.168.178.43