How to recieve 433 and 868 signals with one Reciever and rtl_433?

[kami83]

Hi, i would like to decode my Bresser 7in1 Weather sensor (868M) and some different sensor from 433M. Temporaly i am using one rtl-sdr with a raspberry. Can i configure it to recieve the new Bresser sensor?

BR kami

[HolgerAusB]

as long, as you have no time critical sensors, aka alarms, you can hop frequencies:

rtl_433 -f 433.53M -f 686.02M -H 600

this will hop every 5 minutes (600 seconds) to the other frequency. You might change or strip the decimal part to your needs. And you should test, how often the sensors sending data. Everything above 5 minutes makes it difficult.

And, of course, you will loose all data on the frequency, which is not active in the interval. But for weather stations, that should be OK.

[kami83]

Thanks a lot. This works fine.

[lemek84]

Can I set a different sample rate for each frequency?

What I've tried:

rtl_433 -f 433.92M -s 250k -f 868.95M -s 1200k -H 90 -R 91 -R 104 -C si

but only the last given sampling rate is taken into account.

[zuckschwerdt]

There is only one global sample rate. It does not change with hops. If you need more options then you need to use the HTTP-API (-F http) to effect hops and e.g. sample rate changes. E.g. xh :8433/cmd cmd==center_frequency val==433920123 xh :8433/cmd cmd==sample_rate val==250000 xh :8433/cmd cmd==gain arg==10 …

[AkaBoing]

hi kami83,
-H 600 works, but u loose a lot of messages at 866 Mhz.
try rtl_433 -C si -M level -f 433.92M -f 868.95M -s 1200k -H 25
this works best for Bresser 7in1 Weather sensor and ofc all M-Bus devices
have fun
Boing

[kami83]

Hi, thanks a lot for your reply, but i don't understand the difference why do you use -C si, -s 1200k and -M level. I understand that you go down with the hop level, but what about the rest? i just use -R 42 -R 195 -R 121 -R 173 to get messages from my devices.

BR kami

[AkaBoing]

hi kami,

sry for the overhead.
-C si converts units f.i. °F to °C Default is "native" > "Fahrenheit"
-s 1200k is usefull for long telegrams f.i. M-Bus with 150+ Bytes
-M level adds signal level to output

simply use "rtl_433 rtl_433 -f 433.92M -f 868.95M -H 25" if u dont need above.

Boing

[zuckschwerdt]

sure, looks good!

[AkaBoing]

hi lemek,

if u are on linux:
bash is your friend:

make a script in /home
timehop.sh
#!/bin/bash

while :
do
rtl_433 -f 433.92M -s 250k -R 91 -R 104 -C si -T 90
rtl_433 -f 868.95M -s 1200k -R 91 -R 104 -C si -T 90
sleep 1
done

then start ./timehop.sh or better ; let it autostart

if Windows then dunno, but should be possible too

have fun
Boing

Windows ? dunno, but should be possible..

[k-str50]

sure, looks good!

@zuckschwerdt ,
I'm sorry that I have to ask again.
It seems as if a reception depends on the weather (sunshine). I only get data very sporadically. Could it be that the transmission power depends on the solar radiation?
Can I possibly adjust the sensitivity?
Kurt

[zuckschwerdt]

Use -M level -M noise and watch the levels. Noise will tell you if the band is clear (expect around -20 dB, at worst -15 dB) and signal level will show you if autogain works, should be near -0 dB but could be much fainter.

[k-str50]

I sent this command :
rtl_433 -R 32 -f 868.6M -Y autolevel -M level -M noise
This is the result:
Auto Level] Current noise level -15.2 dB, estimated noise -15.2 dB
It's not really good.
Should I use autogain?

[AkaBoing]

Hi k-str50, Check your antenna and (or) cable. Even a very simple dipol for 868 Mhz gives very good results. Which RTL device u use?, antenna? Indoor or Outdoor use? Check without -R 32 for 5 minutes rtl_433 -f 868.6M > output.txt Post output.txt here. On Linux take Gqrx with 868M Any Signal? My Output with a 868 dipol [102;92m[ [30mSDR [92m] [0m Using device 0: Realtek, RTL2838UHIDIR, SN: 00000001, "Terratec Cinergy T Stick RC (Rev.3)" [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -18.1 dB, adjusting minimum detection level to -15.1 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -20.8 dB, adjusting minimum detection level to -17.8 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -23.0 dB, adjusting minimum detection level to -20.0 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -25.0 dB, adjusting minimum detection level to -22.0 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -26.7 dB, adjusting minimum detection level to -23.7 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -28.3 dB, adjusting minimum detection level to -25.3 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -29.5 dB, adjusting minimum detection level to -26.5 dB [103;93m[ [30mAuto Level [93m] [0m Current signal level -14.9 dB, estimated noise -29.4 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -30.5 dB, adjusting minimum detection level to -27.5 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -31.6 dB, adjusting minimum detection level to -28.6 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -32.6 dB, adjusting minimum detection level to -29.6 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -31.6 dB, adjusting minimum detection level to -28.6 dB [103;93m[ [30mAuto Level [93m] [0m Current noise level -32.1 dB, estimated noise -31.4 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -30.6 dB, adjusting minimum detection level to -27.6 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -31.7 dB, adjusting minimum detection level to -28.7 dB [103;93m[ [30mAuto Level [93m] [0m Estimated noise level is -32.9 dB, adjusting minimum detection level to -29.9 dB [103;93m[ [30mAuto Level [93m] [0m Current noise level -32.7 dB, estimated noise -32.1 dB Boing k-str50 ***@***.***> schrieb am Sa., 19. Okt. 2024, 12:30:

…

I sent this command : rtl_433 -R 32 -f 868.6M -Y autolevel -M level -M noise This is the result: Auto Level] Current noise level -15.2 dB, estimated noise -15.2 dB It's not really good. — Reply to this email directly, view it on GitHub <#3069 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BJYMOYTJOAZPZBLPTKWLRF3Z4IYEBAVCNFSM6AAAAABP7AUJK6VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTAOJZGA2DANI> . You are receiving this because you commented.Message ID: ***@***.***>

[k-str50]

@AkaBoing
Thank you very much for your suggestion.
I have a dongle of the type Realtek

lsusb
Bus 001 Device 004: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T

I have attached a picture of the antenna.

The command

rtl_433 -f 868.6M > output.txt
rtl_433 version 23.11-168-g322e04ff branch master at 202410160342 inputs file rtl_tcp RTL-SDR

New defaults active, use "-Y classic -s 250k" if you need the old defaults

Detached kernel driver
Found Fitipower FC0012 tuner
Exact sample rate is: 1000000.026491 Hz
Allocating 15 zero-copy buffers

results in this result.
output.txt

How should I use gqrx? There is a GUI or the cli version. Which one is meant? And what exactly should I do?

Can you please write to me what I should continue to do?
Kurt

[AkaBoing]

Hi, k-str50, Your device RTL 2832U OEM is working. The antenna is simple but useable. The output shows 8x Smoke Detektor HAG and one -R 155 Fineoffset - WHx080 , all plausible

…

-R 32 is 433.92M, take -R 155 instead On Debian or Ubuntu take the GUI Version of Gqrx, should be in APT repos. Play with this tool, simple but very usefull. have fun Boing k-str50 ***@***.***> schrieb am Mo., 21. Okt. 2024, 13:15:

@AkaBoing <https://github.com/AkaBoing> Thank you very much for your suggestion. I have a dongle of the type Realtek lsusb Bus 001 Device 004: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T I have attached a picture of the antenna. DSCN0019.JPG (view on web) <https://github.com/user-attachments/assets/69c6e6a3-3285-45c8-b7ca-86caac656fea> The command rtl_433 -f 868.6M > output.txt rtl_433 version 23.11-168-g322e04ff branch master at 202410160342 inputs file rtl_tcp RTL-SDR New defaults active, use "-Y classic -s 250k" if you need the old defaults Detached kernel driver Found Fitipower FC0012 tuner Exact sample rate is: 1000000.026491 Hz Allocating 15 zero-copy buffers results in this result. output.txt <https://github.com/user-attachments/files/17459700/output.txt> How should I use gqrx? There is a GUI or the cli version. Which one is meant? And what exactly should I do? Can you please write to me what I should continue to do? Kurt — Reply to this email directly, view it on GitHub <#3069 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BJYMOYT24VA2Z7TF3EUHDHDZ4TO4TAVCNFSM6AAAAABP7AUJK6VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCMBQGQZDMOI> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[AkaBoing]

moin k-str50 ELV sagt mir: Germany Die Rauchmelder in deiner Nähe können dein -R 155 Sensorsignal massiv stören. Also die Antenne möglichst weit weg davon aufstellen. Gruß Detlef. Detlef Haasper ***@***.***> schrieb am Mo., 21. Okt. 2024, 13:56:

…

Hi, k-str50, Your device RTL 2832U OEM is working. The antenna is simple but useable. The output shows 8x Smoke Detektor HAG and one -R 155 Fineoffset - WHx080 , all plausible -R 32 is 433.92M, take -R 155 instead On Debian or Ubuntu take the GUI Version of Gqrx, should be in APT repos. Play with this tool, simple but very usefull. have fun Boing k-str50 ***@***.***> schrieb am Mo., 21. Okt. 2024, 13:15: > @AkaBoing <https://github.com/AkaBoing> > Thank you very much for your suggestion. > I have a dongle of the type Realtek > > > lsusb > Bus 001 Device 004: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T > > I have attached a picture of the antenna. > DSCN0019.JPG (view on web) > <https://github.com/user-attachments/assets/69c6e6a3-3285-45c8-b7ca-86caac656fea> > The command > > rtl_433 -f 868.6M > output.txt > rtl_433 version 23.11-168-g322e04ff branch master at 202410160342 inputs file rtl_tcp RTL-SDR > > New defaults active, use "-Y classic -s 250k" if you need the old defaults > > Detached kernel driver > Found Fitipower FC0012 tuner > Exact sample rate is: 1000000.026491 Hz > Allocating 15 zero-copy buffers > > > results in this result. > output.txt > <https://github.com/user-attachments/files/17459700/output.txt> > > How should I use gqrx? There is a GUI or the cli version. Which one is > meant? And what exactly should I do? > > Can you please write to me what I should continue to do? > Kurt > > — > Reply to this email directly, view it on GitHub > <#3069 (reply in thread)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/BJYMOYT24VA2Z7TF3EUHDHDZ4TO4TAVCNFSM6AAAAABP7AUJK6VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCMBQGQZDMOI> > . > You are receiving this because you were mentioned.Message ID: > ***@***.***> >

[AkaBoing]

last attempt;
try rtl433 -f 868.6M -M level -s 300k >output2.txt
-M level gives Freq1 and Freq2, RSSI,, SNR and NOISE
-s 300k keeps distance from M-Bus at 868.95M
Boing

[k-str50]

Hi, I ran this command
sudo rtl_433 -f 868.35M -M level -s 300k -R 32 -R 155 -F kv -F "influx://127.0.0.1:8086/write?db=rtl433" &
It works fine.
Now I have one more question:
is it possible to run rtl_433 to write a full record to influxDB every 15 minutes?
Thanks
Kurt

[zuckschwerdt]

rtl_433 does not need any privileges, don't ever use sudo.

If you need advanced control over the output then best use a relay script, e.g. adapt https://github.com/merbanan/rtl_433/blob/master/examples/rtl_433_influxdb_relay.py

[k-str50]

Hello
I would like to thank the people who created this program.
It's great and works great for me after some help.
Kurt

[k-str50]

Hello, everything woks fine. But I would like to store my weather data on the Web. Does any have a Suggestion? Which one is the best? With low cost?
thanks
Kurt

[AkaBoing]

hi k-str50,
like this : ?
Openweather.org
take the One Call API 3.0 .
But this is heavy stuff !
You need a lot of learning time.
If you are a programmer:
build a Script
rtl_433 JSON to OCA3
or
a (simple lol) CGI bridge script and a public http server
will do the job too.
Viele Wege führen nach Rom.
good luck
Boing
good luck

[k-str50]

@AkaBoing ,
thanks for your answer.
I was looking for this. Openweather.org doesn't exist. But I found https://openweathermap.org. Is this ok? What should i use?
What about influxdb in a cloud?
There is a dirct interface from rtl433 to influx?

[AkaBoing]

Sorry for the Missing "map", yes this the correct address. But as i said- its a lot learning stuff.
And its NOT completly OpenSource AND ofc. Its NOT free. 6 $(¢)per 1000 webcalls atm.
InfluxDB should work (every SQL based solution should work).
Christian can say If a "direct Interface" to InfluxDB is present. I think Not.
Have fun.
Boing

[zuckschwerdt]

Yes, InfluxDB is supported:

$ rtl_433 -F
...
  [-F log|kv|json|csv|mqtt|influx|syslog|trigger|null] Produce decoded output in given format.
...
	Specify InfluxDB 2.0 server with e.g. -F "influx://localhost:9999/api/v2/write?org=<org>&bucket=<bucket>,token=<authtoken>"
	Specify InfluxDB 1.x server with e.g. -F "influx://localhost:8086/write?db=<db>&p=<password>&u=<user>"
	  Additional parameter -M time:unix:usec:utc for correct timestamps in InfluxDB recommended

[AkaBoing]

Thx

[AkaBoing]

I made my own interface and a Debian WTK3 app
for all my WM- Bus devices and ofc. temp/humidity Sensors. Just for fun. and learned a lot this way.
Boing

[k-str50]

@AkaBoing , @zuckschwerdt ,
thanks for your answer.
I do not want to store my influxDB on a raspberry if possible. Do you have any idea how and where I can store it in a cloud?

[AkaBoing]

Influx on Raspi? Bad Idea, this kills your SD Card
In 3 days. And The Performance IS very Bad.

Question:
How much Sensor Data, which Intervall?
If one Sensor only then simply push the Influx Data to a Cloud of your choice.
Take an 1 hour Intervall for start
I would take a simple endless script loop to feed the Cloud with Data.

A http header in front , the script will do this, and you can view it with any browser. Ofc you have to publish the adress first.
Little afford, mb. some time for the script.
And never publish foreign M-Bus Data ! This is a Grey Zone. Dont even try !

Have fun
Boing

[k-str50]

@AkaBoing ,
thanks for your answer.
I have 22 sensor date
But they are stored between 5 sekonds and 1 minuites. How can I set the intervall to 15 minutes?

[AkaBoing]

A simple example:
a public picture on Google Cloud
https://drive.google.com/file/d/1ADM175ZP_ZBL9RESYCYgFftYMuoOvlYo/view?usp=drivesdk

Could be nearly any kind of Data but No Windows EXE !
And No executeable Linux App.
Boing

[AkaBoing]

The JSON Output of rtl_433 (one of my Oregon Meter)
https://drive.google.com/file/d/1ATPeI_JQf89zJADmbD6ganJtADv_Wx1q/view?usp=drivesdk
Boing

[k-str50]

Hello,
I use a SSD-Drive as storage device instead a SD-Card. Now I can store my Data in influx.
Now I have a problem because I get data ervery few seconds which are stored in the database.
But this is to much because it bloat my database.
Is there any way to say to rtl433 to store the data every 15 minutes?
Thanks for a hint.
Kurt

[zuckschwerdt]

Not possible with just rtl_433. In Influx you should be able to configure this with things like continuous queries, aggregate functions and data retention policies.

[AkaBoing]

try this:
watch -n 900 rtl_433 -f 868.35M -M Level -s 300k -E quit -R155 -F kv -F "influx://127.0.0.1:8086/write?db=rtl433" &

watch with -n 900 starts rtl_433 every 15 mins
rtl_433 with -E quit exits after first good message.
Boing

[k-str50]

@AkaBoing @zuckschwerdt,
thanks for your answers. Is there any way to read also a bmp280 device by using rtl433?

[AkaBoing]

Bosch BMP280 a nice discussion here:
https://forum.arduino.cc/t/sending-bmp280-data-over-433-mhz/1078118

Boing