CUL-Stick working only if OH2 started as root?

Ah… Sorry for misleading instructions. Now, as I’m sitting right in front of my OH2-test installation… :wink:

add the line to

/etc/default/openhab2

this way:

EXTRA_JAVA_OPTS="-Dgnu.io.rxtx.SerialPorts=/dev/ttyACM0"