In the file that you sent, the error is: usb.core.USBError: [Errno 13] Access denied (insufficient permissions)
It looks like your user doesn't have access to the USB device. For testing, I would suggest to try as root instead. When it will work as root, you can then make it work with your normal user. -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/c50cffd9-1f6e-458c-9d3d-5f3189268e00%40googlegroups.com.