This is the code for Julia v2.4

1. Download and install the arduino software from here. Download version 1.0.6 for appropriate OS

2. Download and install Teensyduino v1.24 from here. Again, choose OS you are working on.

3. Copy at90usb1286 folder and paste it in hardware folder of your Arduino installation directory. If you are using Mac OS X, you can find the folder at the location below: Arduino/Contents/Resources/Java/hardware

4. Copy LiquidTWI2 folder and paste it in libraries folder in Arduino installation directory. Mac OS X users can find it here: Arduino/Contents/Resources/Java/libraries

5. Now launch Arduino 1.0.6, open NEWMARLINJULIAV2/NEWMARLINJULIAV2.ino, select following settings and hit compile.

Board: [BootloaderCDC]Teensylu/Printrboard
Programmer: USBtinyISP

Enjoy!