Finnaly got some time to have a look at this. But I simply cant figure how to tell rtl_433 which USB device to use… It seems like an option not really explained.
I get this error, but have no idea what to do with it.:
[19:41:11] openhabian@openHABianPi:~/rtl_433/build$ rtl_433
rtl_433 version 19.08-204-g9fe4f11 branch master at 202002081459 inputs file rtl_tcp RTL-SDR
Use -h for usage help and see https://triq.org/ for documentation.
Trying conf file at "rtl_433.conf"...
Trying conf file at "/home/openhabian/.config/rtl_433/rtl_433.conf"...
Trying conf file at "/usr/local/etc/rtl_433/rtl_433.conf"...
Trying conf file at "/etc/rtl_433/rtl_433.conf"...
Registered 121 out of 148 device decoding protocols [ 1-4 8 11-12 15-17 19-21 23 25-26 29-36 38-60 63 67-71 73-100 102-105 108-116 119 121 124-128 130-148 ]
usb_open error -3
Please fix the device permissions, e.g. by installing the udev rules file rtl-sdr.rules
[11:48:58] openhabian@openHABianPi:~/rtl_433/build$
It looks like it´s looking for a conf (config I assume). But I cant find any info on how this looks like.
The last sentense say I should install the udev rules file rtl-sdr.rules. But again I fail to see how this is suppose to be done… I do have some udev rules for my other USB devices. But this is only the half truth in it, cause I still need to execute rtl_433 with some info about this device…
In short - In the general doc (readme) there is simply missing some info for people not already knowing. 