Problem

The Java Based GUI supplied by Neobotix needs librxtx-java installed to open.

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path

Solution

sudo apt install librxtx-java
Verify the following .so files installed at /usr/lib/jni:
librxtxI2C-2.2pre1.so
librxtxI2C.so
librxtxParallel-2.2pre1.so
librxtxParallel.so
librxtxRaw-2.2pre1.so
librxtxRaw.so
librxtxRS485-2.2pre1.so
librxtxRS485.so
librxtxSerial-2.2pre1.so
librxtxSerial.so
Also don't forget to add your username to the dialout group.
sudo usermod -G dialout -a $USER

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