[90] MQTT Support

[pat054]

My problem is solved somehow. Because at the beginning of the problem my idx 178 virtual sensor had a value that did not move so inevitably an undefined result in the debug screen. In addition, domoticz only transmit parameters that move.

Thank you again mrf68, I learned a lot today.

Have a good Christmas Eve, thank you again for having accompanied me. Cordially.
Patric

[mrf68]

I’m glad It worked out.

Regards,
Martin

[sincze]

@mrf68 you saved me a lot of time with the nice guide! tnx so much

[mrf68]

@sincze you’re welcome.

[sincze]

@sincze you’re welcome.

Hehehe but now I want to achieve the same results via tasmota rules. But that seems difficult.

Sent from my ONEPLUS A6003 using Tapatalk

[mrf68]

I’m sorry, but I don’t understand the question. What info comes from where (looks indeed from a tasmotized device) and what info needs to go in what sensor? What d you expect to see and why is it different from what it is showing?

[sincze]

I’m sorry, but I don’t understand the question. What info comes from where (looks indeed from a tasmotized device) and what info needs to go in what sensor? What d you expect to see and why is it different from what it is showing?

At the moment with your manual I was able to extract RSSI value using Node Red. tnx for that. As at the moment I don't want to use Node Red I was trying to figure out if I could use native Tasmota rules to achieve the same goal.

Command:

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mosquitto_pub -h localhost -t <topic>/cmnd/status -m 11

Or via the console

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status11

Gives me:

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19:10:24 MQT: basic/stat/STATUS11 = {"StatusSTS":{"Time":"2019-05 12T19:10:24","Uptime":"0T06:20:15","Vcc":3.206,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"POWER":"ON","Wifi":{"AP":1,"SSId":"******","BSSId":"**:**:**:**:**:**","Channel":**,"RSSI":98,"LinkCount":1,"Downtime":"0T00:00:04"}}}
19:10:25 MQT: basic/tele/HASS_STATE = {"Version":"6.5.0(release-sonoff)","BuildDateTime":"2019-03-1}

I am interested in this part "RSSI":98,

So what I am looking for is a TASMOTA rule that is able to extract the 98 just as your node-red advise did. ESP Easy supports this natively.

If the value is extracted it should be send to domoticz, something like:

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rule1 on basic/stat/STATUS#RSSI do publish domoticz/in {"idx":120,"nvalue":0,"svalue":"%value%"} endon"} 

This will avoid having me to use Node Red

[mrf68]

....
This will avoid having me to use Node Red

Ah, now I understand it a bit better. Unfortunately, I'm a big fan of Node Red. I let Node Red do more and more the thinking instead of having Domoticz taking care of it. I do have Tasmotized devices and some have a Domoticz idx, but Domoticz transforms only to be the bridge between 433MHz and other devices. And the GUI is a big WAF, so I will keep that.

So, I'm sorry for not being able to help you with your quest.

[sincze]

No worries.
I use Pass2PHP to do everything (not Node-Red). Don't use the interface as everything is automated
That was the biggest WAF. Not to touch any buttons at all. Not even on the toilet.

[MeAlbert]

Hi I have tried to use the solution you describe below but it does not work for me.
I have a heat-pump with a ESP8266 sending all kind of date to domoticz using mqtt. That works very nice. The Pi i am using is a Pi zero so when I use also influx, influxDB and grafana it is getting quite slow. I installed domoticz on my synology 218+ but I can't get it working correctly. The data of the heat-pump is being send to synology in the right matter. I also managed to get influxDB working there. Now as a first step I want to send data from my Pi to my synology using node-red which I also use for the heat pump. I have an exact copy of my Pi domoticz on my synology domoticz.
I used :

- MQTT node domoticz/out
server 127-0-0-1:1883
topic : domoticz out/#

- JSON node to covert between JSON & object
property: msg.payload

- switch mode to filter out a few devices
property: msg.payload.idx
== 0/9 64

- Node owith the function :

msg.payload = "{\"command\": \"udevice\", \"idx\": 178, \"svalue\": \"" + (msg.payload.svalue1) + "\"}";
return msg;

- MQTT node domoticz/in
server 192.168.xxx.xx:1883 (the synology address)

The debug screen gives : "{"command": "udevice", "idx": 64, "svalue": "757.0"}" which is correct but nothing happens in the domoticz device 64 on synology.
What do I do wrong??

[waaren]

- MQTT node domoticz/in
server 192.168.xxx.xx:1883 (the synology address)

Have you installed MQTT (in domoticz) and mosquito on on your Synology?

[FireWizard]

HI, @MeAlbert,

You wrote:

- MQTT node domoticz/out
server 127-0-0-1:1883
topic : domoticz out/#

- JSON node to covert between JSON & object
property: msg.payload

- switch mode to filter out a few devices
property: msg.payload.idx
== 0/9 64

- Node owith the function :

msg.payload = "{\"command\": \"udevice\", \"idx\": 178, \"svalue\": \"" + (msg.payload.svalue1) + "\"}";
return msg;

- MQTT node domoticz/in
server 192.168.xxx.xx:1883 (the synology address)

The debug screen gives : "{"command": "udevice", "idx": 64, "svalue": "757.0"}" which is correct but nothing happens in the domoticz device 64 on synology.
What do I do wrong??

As I can see you have 2 MQTT servers (brokers) installed.
1. Address 127.0.0.1:1883, which is your localhost. So obviously also Node Red is installed on this RPi
Your topic on this localhost MQTT node domoticz out/#. Unless it is a type , this topic is wrong and should be domoticz/out.
And nothing more, like # or +. Also your address is written as 127-0-01, and this should be 127.0.0.1. So I assume a typo.

2. Address 192.168.xxx.xxx is the MQTT on your Synology NAS

As @waaren says. It is important to configure in the Domoticz hardware MQTT over LAN.
On the NAS the IP address should be 127.0.0.1 or 192.168.xxx.xxx. Also locoalhost can be used.
This all on the condition that the 2nd MQTT server is installed on the NAS and is accessible by Donoticz.

Also in the RPi you should configure the same, if the other MQTT server runs on this RPI, together with Domoticz and Node Red.

As you have 2 MQTT servers running in your network, a common mistake is that you communicate with the wrong server.

So check that the MQTT Input node is subscribing to the MQTT server on the localhost and that the MQTT Output node is publishing to the Remote MQTT server on the NAS.

Having said this and if you have checked the above, we should look to the data you send.

If you look to your data you see that you send a string (between " "). This is something Domoticz cannot understand.
Domoticz needs a JSON Oject.

See the difference below:

Screenshot_string versus JSON object.png (15.72 KiB) Viewed 1813 times

You have 2 options:

1. Insert a JSON node between the output of the "Function" node and the input of the MQTT output node to Domoticz.

2. Change your code in the "Function" node to:

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msg.payload = {"command": "udevice", "idx": 178, "svalue": (msg.payload.svalue1)};
return msg;

There is one thing, which I do not understand:

You have a payload of "idx": 178 and your debug screen gives "idx": 64. This cannot be the samemessage sent.

Regards

[MeAlbert]

Hi FireWizard.
Thanks for the quick reply. There are some typo's in my text. To make it simple I have a node-red flow running that sends data from my heat-pump to domoticz and influxDB. That works fineboth influx and domoticz. When I installed domoticz on my synology And I had problems getting to work I added an extra MQTT output node. In stead of 127.0.0.1 I used the ip address of the synology server and that works fine. All heat-pump data comes in as well as my smart meter data via youless. I will delet the # but when I debug it it works fine with the #. The address is a typo. I get all data on the MQTT that is listening on 127.0.0.1 . So the settings are correct and working. The MQTT ouput node is subscribing to synology and connected.
I changed thee code in the function block and now I get

22-10-2020 21:43:01node: 5627d816.529848
domoticz/out : msg.payload : Object
{ command: "udevice", idx: 64, svalue: "2348.0" }

The domoticz device on the synology server is now updated but without value. I think the "2348.0" should be without quotes. And I do not know how to get rid of them. So there is progress but not there yet.

The 178 was a wrong copy paste I already had 64 there.
Any ideas?

[FireWizard]

Hi @MeAlbert

What you have to send to Domoticz depends on the type of sensor.

For a good overview, you can look to the wiki: https://www.domoticz.com/wiki/Domoticz_API/JSON_URL%27s

I recommend also always: https://piandmore.wordpress.com/tag/domoticz/

You don't tell which type of virtual sensor you have created in Domoticz, which you want to update.

Also keep in mind that values after nvalue are numerical and values after svalue are string values.
The majority needs a svalue, but some sensors need a nvalue and some others need both.

Your value "2348.0" is a string value and perfect for svalue.
Some do not allow a figure after the decimal point. Yours?

Regards

[MeAlbert]

When I changed to other IDX it sometimes works. Genaral kWh don.t work and general custom works.
If I send the json data is the problem the solved?
I will study the links you mention Thanks so far.

[FireWizard]

@MeAlbert,

What is the type of sensor, you want to send this data to?

Regards

[MeAlbert]

IDX 64 is type usage with energy read from device. When I change it in computed I get the right value
IDX 73 is type general custom sensor and gets updated correctly.

[FireWizard]

Hi @MeAlbert,

DX 64 is type usage with energy read from device. When I change it in computed I get the right value

If you look in: https://piandmore.wordpress.com/2019/02 ... -domoticz/

And look for: Electric

You will see:

The electric sensor will show the current usage of electricity in Watt and the cumulative usage in kWh. You can add digits after the decimal if needed.

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{"command":"udevice", "idx":1234, "svalue":"us;cu"}

where us is usage in Watt and cu is cumulative usage in Wh (even though it is displayed in kWh)

So what you see, you have to supply 2 values (us and cu)

How to send the data?
You have to supply the data as follows:

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msg.payload = {"command":"udevice","idx":279,"nvalue":0,"svalue":(msg.payload.watts.toString()) + ";" + (msg.payload.watt_cumulative_usage.toString())}

Regards

[MeAlbert]

Hi FireWizard
I did see the us;cu part but did not know how to implement is.
I would have never come to the solution you present here.
When I implement it I get the following error message:
function : (error)
"TypeError: Cannot read property 'toString' of undefined"
Should there not be ; after the code and before return msg;

The input for the function is the following:

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{
	"Battery" : 255,
	"EnergyMeterMode" : "0",
	"RSSI" : 12,
	"description" : "",
	"dtype" : "General",
	"hwid" : "7",
	"id" : "00082064",
	"idx" : 64,
	"name" : "WP Opgewekt",
	"nvalue" : 0,
	"stype" : "kWh",
	"svalue1" : "706.0",
	"svalue2" : "5399890.3171969",
	"unit" : 1
}

When I change the function as following I get an output.

msg.payload = {"command":"udevice","idx":64,"nvalue":0,"svalue":(msg.payload.svalue1) + ";" + (msg.payload.svalue2)};
return msg;

[FireWizard]

Hi, @MeAlbert

You found the correct solution.
The function toString() creates a string in case the presented value is a numerical value.
However your svalue1 and svalue2 were already strings (between " ") and so you have to omit these toString() function.
The semicolon (;) is not that important in this case.

Regards