pi@raspberrypi:~ $ sudo tail -f /var/log/syslog
Mar 25 16:59:37 raspberrypi weewx[2347]: engine: Loading station type FineOffsetUSB (weewx.drivers.fousb)
Mar 25 16:59:37 raspberrypi weewx[2332]: Starting weewx weather system: weewx.
Mar 25 16:59:37 raspberrypi systemd[1]: Started LSB: weewx weather system.
Mar 25 16:59:37 raspberrypi weewx[2347]: fousb: driver version is 1.10
Mar 25 16:59:37 raspberrypi weewx[2347]: fousb: polling mode is PERIODIC
Mar 25 16:59:37 raspberrypi weewx[2347]: fousb: polling interval is 60
Mar 25 16:59:37 raspberrypi weewx[2347]: fousb: Cannot find USB device with Vendor=0x1941 ProdID=0x8021 Device=None
Mar 25 16:59:37 raspberrypi weewx[2347]: engine: Import of driver failed: Unable to find USB device (<class 'weewx.WeeWxIOError'>)
Mar 25 16:59:37 raspberrypi weewx[2347]: engine: Unable to load driver: Unable to find USB device
Mar 25 16:59:37 raspberrypi weewx[2347]: **** Exiting...
pi@raspberrypi:~ $ sudo lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Thank you very much