weewx-multi and sdr.conf

[weather list]

I have three instances running in multi (weewx, sdr, wflow) but the sdr.instance throws this error:

May 31 15:29:38 NUC2498 weewx-sdr[4919]: import of driver failed: failed to start process 'rtl_433 -M utc -F json -G': [Errno 2] No such file or directory (<class 'weewx.WeeWxIOError'>)





which rtl_433
/usr/local/bin/rtl_433





Running sdr.conf manually works fine: sudo bin/weewxd sdr.conf

Can someone point me to what is causing this?

May 31 15:29:38 NUC2498 weewx-sdr[4915]: engine: Initializing weewx version 3.9.1
May 31 15:29:38 NUC2498 weewx-sdr[4915]: engine: Using Python 2.7.13 (default, Sep 26 2018, 18:42:22) #012[GCC 6.3.0 20170516]
May 31 15:29:38 NUC2498 weewx-sdr[4915]: engine: Platform Linux-4.9.0-12-amd64-x86_64-with-debian-9.12
May 31 15:29:38 NUC2498 weewx-sdr[4915]: engine: Locale is 'en_US.UTF-8'
May 31 15:29:38 NUC2498 weewx-sdr[4915]: engine: pid file is /var/run/weewx-sdr.pid
May 31 15:29:38 NUC2498 weewx-sdr[4919]: engine: Using configuration file /home/weewx/sdr.conf
May 31 15:29:38 NUC2498 weewx-sdr[4919]: engine: Debug is 1
May 31 15:29:38 NUC2498 weewx-sdr[4919]: engine: Initializing engine
May 31 15:29:38 NUC2498 weewx-sdr[4919]: engine: Loading station type SDR (user.sdr)
May 31 15:29:38 NUC2498 weewx-sdr[4919]: sdr: MainThread: driver version is 0.64
May 31 15:29:38 NUC2498 weewx-sdr[4919]: sdr: MainThread: sensor map is {'extraTemp2': 'temperature.*.AmbientF007THPacket', 'extraTemp3': 'temperature.001A.AcuriteLightningPacket', 'soilTemp1': 'strikes_total.001A.AcuriteLightningPacket', 'soilTemp2': 'distance.001A.AcuriteLightningPacket', 'leafTemp2': 'depth.*.TSFT002Packet'}
May 31 15:29:38 NUC2498 weewx-sdr[4919]: sdr: MainThread: deltas is {'strikes': 'strikes_total', 'rain': 'rain_total'}
May 31 15:29:38 NUC2498 weewx-sdr[4919]: sdr: MainThread: startup process 'rtl_433 -M utc -F json -G'
May 31 15:29:38 NUC2498 weewx-sdr[4919]: import of driver failed: failed to start process 'rtl_433 -M utc -F json -G': [Errno 2] No such file or directory (<class 'weewx.WeeWxIOError'>)
May 31 15:29:38 NUC2498 weewx-sdr[4919]: engine: Unable to load driver: failed to start process 'rtl_433 -M utc -F json -G': [Errno 2] No such file or directory
May 31 15:29:38 NUC2498 weewx-sdr[4919]:     ****  Waiting 60 seconds then retrying...
May 31 15:29:40 NUC2498 weewx[4249]: sdr: MainThread: lines=[]
May 31 15:29:46 NUC2498 weewx[4249]: sdr: MainThread: lines=['{"time" : "2020-05-31 19:29:42", "model" : "Ambient Weather F007TH Thermo-Hygrometer", "device" : 97, "channel" : 1, "battery" : "OK", "temperature_F" : 89.900, "humidity" : 41, "mic" : "CRC"}\n']
May 31 15:29:46 NUC2498 weewx[4249]: sdr: MainThread: packet={'extraTemp2': 89.9, 'usUnits': 1, 'dateTime': 1590953382}
May 31 15:29:49 NUC2498 weewx[4249]: sdr: MainThread: lines=[]
May 31 15:29:53 NUC2498 weewx[4249]: sdr: MainThread: lines=['{"time" : "2020-05-31 19:29:49", "model" : "TS-FT002", "id" : 127, "depth_cm" : 216, "temperature_C" : 39.000, "transmit_s" : 180, "flags" : 8, "mic" : "CHECKSUM"}\n', '{"time" : "2020-05-31 19:29:50", "model" : "TS-FT002", "id" : 127, "depth_cm" : 216, "temperature_C" : 39.000, "transmit_s" : 180, "flags" : 8, "mic" : "CHECKSUM"}\n']
May 31 15:29:53 NUC2498 weewx[4249]: sdr: MainThread: parse_json: unknown model TS-FT002
May 31 15:29:53 NUC2498 weewx[4249]: sdr: MainThread: punt unrecognized line '{"time" : "2020-05-31 19:29:49", "model" : "TS-FT002", "id" : 127, "depth_cm" : 216, "temperature_C" : 39.000, "transmit_s" : 180, "flags" : 8, "mic" : "CHECKSUM"}#012'
May 31 15:29:53 NUC2498 weewx[4249]: sdr: MainThread: parse_json: unknown model TS-FT002
May 31 15:29:53 NUC2498 weewx[4249]: sdr: MainThread: punt unrecognized line '{"time" : "2020-05-31 19:29:50", "model" : "TS-FT002", "id" : 127, "depth_cm" : 216, "temperature_C" : 39.000, "transmit_s" : 180, "flags" : 8, "mic" : "CHECKSUM"}#012'

NUC running Debian 9

WeeWx 3.9.1

[Rob Wolff]

I had the same issue. Resolved it by adding

[SDR]
    driver = user.sdr
    path = /usr/local/bin

    ld_library_path = /usr/local/lib

to my weewx.conf

Hope this helps.