I am having difficulty getting my computer to talk to the prusa mendel's arduino mega. i have installed the
Marlin Firmware on the mega and i am trying to use the Reprap host software to communicate. Also i am using a RAMPS1.4 motor control board. when i try to run the host software this is the message i get in a command prompt window. what caught my interest is towards the end it says "error opening port..usb0" any suggestions for how to fix this?
C:\Program Files\REPRAP\Reprap>rem reprap-host -- runs Reprap Java host code with an appropriate classpath
C:\Program Files\REPRAP\Reprap>rem Amount of RAM to allow Java VM to use
C:\Program Files\REPRAP\Reprap>set REPRAP_RAM_SIZE=1024M
C:\Program Files\REPRAP\Reprap>rem reprap.jar file and stl file
C:\Program Files\REPRAP\Reprap>set REPRAP_DIR=C:\Program Files\Reprap
C:\Program Files\REPRAP\Reprap>rem Java3D and j3d.org libraries
C:\Program Files\REPRAP\Reprap>rem set JAVA_LIBRARY_DIR=C:\Program Files\Reprap
C:\Program Files\REPRAP\Reprap>rem cd so we can find the reprap-wv.stl file. Can we avoid this??
C:\Program Files\REPRAP\Reprap>IF NOT EXIST reprap-wv.stl cd "C:\Program Files\Reprap"
C:\Program Files\REPRAP\Reprap>java -cp ".\reprap.jar;.\RXTXcomm.jar;.\j3dcore.jar;.\j3d-org-java3d-all.jar;.\j3dutils.jar;.\swing-layout-1.0.3.jar;.\vecmath.jar;." -Xmx1024M org/reprap/MainRepRap preference: Extruder4_MaxSpeed(0..255) not found in either preference file.
Refresh extruder preferences: java.lang.NumberFormatException: null
RepRap preference: Extruder4_MaxSpeed(0..255) not found in either preference file.
Refresh extruder preferences: java.lang.NumberFormatException: null
WARNING: RXTX Version mismatch
Jar version = RXTX-2.2pre1
native lib Version = RXTX-2.2pre2
Error opening port: /dev/ttyUSB0
RepRap preference: Extruder4_MaxSpeed(0..255) not found in either preference file.
Refresh extruder preferences: java.lang.NumberFormatException: null
