Hi there, I also had experience with the same issue. It could be possible problem of granting access to /dev/ttyUSB0. You should try this way # ls -la /dev/ttyUSB0 crw-rw---- 1 root dialout 188, 0 Apr 12 07:36 /dev/ttyUSB0 # chmod 777 /dev/ttyUSB0 # ls -la /dev/ttyUSB0 crwxrwxrwx 1 root dialout 188 ...

It's very nice project and hope to see Texas CC dongle version soon!