Installation proceedure for setting up java-arduino communication Download arduino software: http://arduino.cc/en/Main/Software Download eclipse for java: http://www.eclipse.org/downloads/ extract both to desired location (C:\program files (x86) is best for school computers so all users can access it) to run either program on Calvin College computers, you need to run it as administrator:right click .exe file\properties\compatability\Run this program as administrator - you can do this for all users if you wish create java project in eclipse using source file SerialTest.java found here: 'S:\Engineering\Teams\Team01\Files for Website' soon to be on website select menu item project\properties in pop-up: Java Build Path (on left) tab Libraries (on top) click 'Add External JARs' select RXTXcomm.jar from the extracted arduino folder\lib\ RXTXcomm.jar should appear in the pop-up. the JRE System Library version should also be displayed in this pop-up. if there is more than one version of java on the computer, you will need to know the version eclipse is using copy rxtxSerial.dll from arduino folder to C:\Program Files (x86)\Java\jre6\bin : eclipse is using jre6 on my machine The PORT_NAMES[] variable needs to be modified for the arduino board used: open arduino.exe Use Tools/SerialPort to determine which COM Port your board uses change COM3 to the com port being used