On Friday, March 6, 2020 at 10:21:28 AM UTC-5, Gil Hutcheson wrote:
>
> Weewx seems to be working in simulator works fine. It I run the rtl_433 
> command I am getting data from the sensors. When I use  sudo 
> /etc/init.d/weewx start I get the error below. Any suggestions, please?
>
> Mar  6 10:08:45 raspberrypi weewx[2219]: engine: Unable to load driver: 
> failed to start process 'rtl_433 -M utc -F json': [Errno 2] No such file or 
> directory
>

the environment in which you are invoking rtl_433 is different from the 
environment in which weewx is starting as a daemon

be sure that rtl_433 is in the path

you can do that one of these ways:
 - specify the full path to rtl_433 in the [SDR] section of your weewx 
configuration file
 - specify the path in the [SDR] section of your weewx configuration file
 - extend PATH in the weewx rc script

the weewx-sdr readme has details:

https://github.com/matthewwall/weewx-sdr/

see the 'Environment' section

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