I have spent the last 2 weeks testing bits found in this forum and elsewhere without success.
I have an SDR-RTL dongle (blog V4) attached to my NUC running Home Assistant HAOS.
In its most basic form, I can pick up one device on 433mhz (my oil level sensor).
I did this simply by installing the following add-ons:
rtl_433 (next) and rtl_433 (autodiscovery)
and the MQTT integration.
Other than entering the basic setup details in the rtl_433 autodiscover configuration tab (host ip, port, mqtt user, mqtt password), I have made no other config. I have not even added an rtl_433.conf file. that part just worked.
Then, after installing MQTT explorer, I can see devices being discovered and have succesfully intergrated these in home assistant.
NOW, i would like to go a bit further and also have it scan other frequencies. I have tried adding a rtl_433.config i the RTL_433 folder without any noticable effect.
A file that does reside in that location is rtl_433.conf.template but it does not seem to do much and perhaps for info only.
It looks like this: (only 71 lines)
# This is an empty template for configuring rtl_433. mqtt information will be
# automatically added. Create multiple files ending in '.conf.template' to
# manage multiple rtl_433 radios, being sure to set the 'device' setting. The
# device must be set before mqtt output lines.
# https://github.com/merbanan/rtl_433/blob/da289d37eba7378726fcde502d38a466f9128b22/conf/rtl_433.example.conf
output mqtt://${host}:${port},user=${username},pass=${password},retain=${retain}
report_meta time:iso:usec:tz
# To keep the same topics when switching between the normal and edge versions,
# use this output line instead.
# output mqtt://${host}:${port},user=${username},pass=${password},retain=${retain},devices=rtl_433/9b13b3f4-rtl433/devices[/type][/model][/subtype][/channel][/id],events=rtl_433/9b13b3f4-rtl433/events,states=rtl_433/9b13b3f4-rtl433/states
# Uncomment the following line to also enable the default "table" output to the
# addon logs.
# output kv
# Disable TPMS sensors by default. These can cause an overwhelming number of
# devices and entities to show up in Home Assistant.
# This list is generated by running:
# rtl_433 -R help 2>&1 | grep -i tpms | sd '.*\[(\d+)\].*' 'protocol -/run.sh'
# [59] Steelmate TPMS
# [60] Schrader TPMS
# [82] Citroen TPMS
# [88] Toyota TPMS
# [89] Ford TPMS
# [90] Renault TPMS
# [95] Schrader TPMS EG53MA4, PA66GF35
# [110] PMV-107J (Toyota) TPMS
# [123]* Jansite TPMS Model TY02S
# [140] Elantra2012 TPMS
# [156] Abarth 124 Spider TPMS
# [168] Schrader TPMS SMD3MA4 (Subaru)
# [180] Jansite TPMS Model Solar
# [186] Hyundai TPMS (VDO)
# [201] Unbranded SolarTPMS for trucks
# [203] Porsche Boxster/Cayman TPMS
# protocol 208 # AVE TPMS
# protocol 212 # Renault 0435R TPMS
# protocol 225 # TyreGuard 400 TPMS
# protocol 226 # Kia TPMS (-s 1000k)
# protocol 241 # EezTire E618, Carchet TPMS, TST-507 TPMS
# protocol 248 # Nissan TPMS
# protocol 252 # BMW Gen4-Gen5 TPMS and Audi TPMS Pressure Alert, multi-brand HUF/Beru, Continental, Schrader/Sensata, Audi
#protocol 257 # BMW Gen3 TPMS
#protocol 275 # GM-Aftermarket TPMS
protocol -59
protocol -60
protocol -82
protocol -88
protocol -89
protocol -90
protocol -95
protocol -110
protocol -123
protocol -140
protocol -156
protocol -168
protocol -180
protocol -186
protocol -201
protocol -203
protocol -208
protocol -212
protocol -225
protocol -226
protocol -241
protocol -248
protocol -252
protocol -257
protocol -275
I have seen the following example conf file: rtl_433 example
*What I am really looking for is a basic tutorial, for my setup, with instructions what to setup (whether tl_433 or (next versions etc and corresponding autodiscovery add-on) and where to save a config file. (pretty sure the RTL_433 folder is correct) with some basic instructions to enable me to:
- hop between 2 or more frequencies (perhaps with varying sample rates?)
- show activity in the add on log
- specify which protocols should be ignored (like tyre pressure sensors) and/or which should be processed.
Is anyone up for the challenge to create a small guide for beginners please? (or prive some links to a useful resource? Any tips much appreciated. happy to fund coffee. 
