i am having this same problem when running my wmr300 on a raspberry pi hope 
there is a fix for this have tried everything but still wont read data from 
the  weather station

On Wednesday, 29 November 2017 08:24:18 UTC, Markus Benedikt Biewer wrote:
>
> I am new to WeeWx and new to Linux as well. I run WeeWx latest version on 
> a Cubietruck running Ubuntu 16.04.3 LTS 
> I tried to get WeeWx to run with my Oregon Scientific WMR300 but 
> unfortunately I had no success.
>
> I tried to search the weewx user group. After reading that I got in 
> contact with Roland, the author in this thread:
>
> https://groups.google.com/d/topic/weewx-user/YSz_IWnzOjE
>
> Roland said, it is an issue with libusb, but it seems I can not get it 
> fixed without help of the user group here... my knowledge what to do is 
> much too limited. 
>
> Is anybody out there willing to help me? I have setup a ssh access okay, 
> even redirected from my LAN to the WAN (in case somebody would be willing 
> to access my cubietruck directly).
>
> Salut from the german/french border,
> Markus
>
>
> Logfile attached:
>
> --
> linaro@MyServer:~$ tail -f /var/log/syslog
> Nov 29 09:05:37 MyServer weewx[12404]: engine: Loading service 
> weewx.engine.StdReport
> Nov 29 09:05:37 MyServer weewx[12404]: engine: Finished loading service 
> weewx.engine.StdReport
> Nov 29 09:05:37 MyServer weewx[12404]: engine: Starting up weewx version 
> 3.7.1
> Nov 29 09:05:37 MyServer weewx[12404]: engine: Station does not support 
> reading the time
> Nov 29 09:05:37 MyServer weewx[12404]: wmr300: reading records since 
> ******* N/A *******     (    N/A   )
> Nov 29 09:05:37 MyServer weewx[12404]: wmr300: usb failure: [Errno 110] 
> Operation timed out
> Nov 29 09:05:37 MyServer weewx[12404]: engine: Main loop exiting. Shutting 
> engine down.
> Nov 29 09:05:37 MyServer weewx[12404]: engine: Caught WeeWxIOError: [Errno 
> 110] Operation timed out
> Nov 29 09:05:37 MyServer weewx[12404]:     ****  Waiting 60 seconds then 
> retrying...
> Nov 29 09:06:13 MyServer rsyslogd-2007: action 'action 10' suspended, next 
> retry is Wed Nov 29 09:07:43 2017 [v8.16.0 try 
> http://www.rsyslog.com/e/2007 ]
> Nov 29 09:06:37 MyServer weewx[12404]: engine: retrying...
> Nov 29 09:06:37 MyServer weewx[12404]: engine: Using configuration file 
> /etc/weewx/weewx.conf
> Nov 29 09:06:37 MyServer weewx[12404]: engine: debug is 1
> Nov 29 09:06:37 MyServer weewx[12404]: engine: Initializing engine
> Nov 29 09:06:37 MyServer weewx[12404]: engine: Loading station type WMR300 
> (weewx.drivers.wmr300)
> Nov 29 09:06:37 MyServer weewx[12404]: wmr300: driver version is 0.18
> Nov 29 09:06:37 MyServer weewx[12404]: wmr300: usb info: 
> pyusb_version=1.0.0b2
> Nov 29 09:06:37 MyServer weewx[12404]: wmr300: sensor map is 
> {'outHumidity': 'humidity_1', 'extraDewpoint6': 'dewpoint_7', 'windchill': 
> 'windchill', 'extraDewpoint4': 'dewpoint_5', 'rainRate': 'rain_rate', 
> 'heatindex': 'heatindex_1', 'inTemp': 'temperature_0', 'windGustDir': 
> 'wind_gust_dir', 'extraDewpoint2': 'dewpoint_3', 'extraDewpoint3': 
> 'dewpoint_4', 'extraDewpoint1': 'dewpoint_2', 'barometer': 'barometer', 
> 'extraDewpoint7': 'dewpoint_8', 'dewpoint': 'dewpoint_1', 'extraDewpoint5': 
> 'dewpoint_6', 'extraHumid6': 'humidity_7', 'pressure': 'pressure', 
> 'extraHumid4': 'humidity_5', 'extraHumid5': 'humidity_6', 'extraHumid2': 
> 'humidity_3', 'extraHumid3': 'humidity_4', 'extraHumid1': 'humidity_2', 
> 'extraTemp6': 'temperature_7', 'extraTemp7': 'temperature_8', 'extraTemp4': 
> 'temperature_5', 'extraTemp5': 'temperature_6', 'extraTemp2': 
> 'temperature_3', 'extraTemp3': 'temperature_4', 'extraTemp1': 
> 'temperature_2', 'extraHeatindex3': 'heatindex_4', 'extraHeatindex2': 
> 'heatindex_3', 'extraHeatindex1': 'heatindex_2', 'extraHeatindex7': 
> 'heatindex_8', 'extraHeatindex6': 'heatindex_7', 'extraHeatindex5': 
> 'heatindex_6', 'extraHumid7': 'humidity_8', 'extraHeatindex4': 
> 'heatindex_5', 'windDir': 'wind_dir', 'outTemp': 'temperature_1', 
> 'windSpeed': 'wind_avg', 'inHumidity': 'humidity_0', 'windGust': 
> 'wind_gust'}
> Nov 29 09:06:37 MyServer weewx[12404]: wmr300: Found station at bus= 
> device=
> Nov 29 09:06:38 MyServer kernel: [298348.444334] usb 3-1: reset full-speed 
> USB device number 2 using sw-ohci
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.engine.StdTimeSynch
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.engine.StdTimeSynch
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.engine.StdConvert
> Nov 29 09:06:38 MyServer weewx[12404]: engine: StdConvert target unit is 
> 0x1
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.engine.StdConvert
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.engine.StdCalibrate
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.engine.StdCalibrate
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.engine.StdQC
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.engine.StdQC
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.wxservices.StdWXCalculate
> Nov 29 09:06:38 MyServer weewx[12404]: wxcalculate: The following values 
> will be calculated: barometer=prefer_hardware, windchill=hardware, 
> dewpoint=hardware, appTemp=prefer_hardware, rainRate=hardware, 
> windrun=prefer_hardware, heatindex=hardware, maxSolarRad=prefer_hardware, 
> humidex=prefer_hardware, pressure=prefer_hardware, 
> inDewpoint=prefer_hardware, ET=prefer_hardware, altimeter=prefer_hardware, 
> cloudbase=prefer_hardware
> Nov 29 09:06:38 MyServer weewx[12404]: wxcalculate: The following 
> algorithms will be used for calculations: altimeter=aaNOAA, maxSolarRad=RS
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.wxservices.StdWXCalculate
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.engine.StdArchive
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Archive will use data 
> binding wx_binding
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Record generation will be 
> attempted in 'hardware'
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Using archive interval of 
> 300 seconds (specified in weewx configuration)
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Use LOOP data in hi/low 
> calculations: 1
> Nov 29 09:06:38 MyServer weewx[12404]: manager: Daily summary version is 
> 2.0
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Using binding 'wx_binding' 
> to database 'weewx.sdb'
> Nov 29 09:06:38 MyServer weewx[12404]: manager: Starting backfill of daily 
> summaries
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.engine.StdArchive
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.restx.StdStationRegistry
> Nov 29 09:06:38 MyServer weewx[12404]: restx: StationRegistry: 
> Registration not requested.
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.restx.StdStationRegistry
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.restx.StdWunderground
> Nov 29 09:06:38 MyServer weewx[12404]: restx: Wunderground: Posting not 
> enabled.
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.restx.StdWunderground
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.restx.StdPWSweather
> Nov 29 09:06:38 MyServer weewx[12404]: restx: PWSweather: Posting not 
> enabled.
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.restx.StdPWSweather
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.restx.StdCWOP
> Nov 29 09:06:38 MyServer weewx[12404]: restx: CWOP: Posting not enabled.
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.restx.StdCWOP
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.restx.StdWOW
> Nov 29 09:06:38 MyServer weewx[12404]: restx: WOW: Posting not enabled.
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.restx.StdWOW
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.restx.StdAWEKAS
> Nov 29 09:06:38 MyServer weewx[12404]: restx: AWEKAS: Posting not enabled.
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.restx.StdAWEKAS
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.engine.StdPrint
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.engine.StdPrint
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Loading service 
> weewx.engine.StdReport
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Finished loading service 
> weewx.engine.StdReport
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Starting up weewx version 
> 3.7.1
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Station does not support 
> reading the time
> Nov 29 09:06:38 MyServer weewx[12404]: wmr300: reading records since 
> ******* N/A *******     (    N/A   )
> Nov 29 09:06:38 MyServer weewx[12404]: wmr300: usb failure: [Errno 110] 
> Operation timed out
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Main loop exiting. Shutting 
> engine down.
> Nov 29 09:06:38 MyServer weewx[12404]: engine: Caught WeeWxIOError: [Errno 
> 110] Operation timed out
> Nov 29 09:06:38 MyServer weewx[12404]:     ****  Waiting 60 seconds then 
> retrying...
>
>

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