Light does not switch on with MQTT Topic is solved

[Gaijin66]

Hello everyone,

I have a Raspberry Pi 3B+. There is a RFXtrx433 connected on the USB port. I have led lights plugged in a KaKu / CoCo switch. It is programmed to switch on at sunset an switch off at 00:00. That works perfectly. Switching on and off by clicking on it also works good. When i give the command:

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mosquitto_pub -h localhost -m '{ "idx" : 3, "nvalue" : 1 }' -t 'domoticz/in'

it switches the light on on the dashboard, but the actual light does not go on. Same goes for turning off.
Domoticz and MQTT communicates on port 1338.
Maybe i did not give all the necessary information. Send me in the right direction, please. What can i do?

[waaren]

Maybe i did not give all the necessary information. Send me in the right direction, please. What can i do?

What is the result if you enter

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mosquitto_pub -t domoticz/in -m {"command": "switchlight", "idx": 3, "switchcmd": "On" } 

?

[Gaijin66]

Hello waaren,

Thanks for the reply.

I did not try that, but i will. I will come back on that.

[Gaijin66]

It says:

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Error: Unknown option 'switchlight,'.

When I give the command:

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curl "http://192.168.0.5:8080/json.htm?type=command&param=switchlight&idx=3&switchcmd=Off"

It says:

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{
   "status" : "OK",
   "title" : "SwitchLight"
}

The actual light goes on.

[waaren]

It says:

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Error: Unknown option 'switchlight,'.

Sorry forgot the single quotes

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mosquitto_pub -t domoticz/in -m '{"command": "switchlight", "idx": 3, "switchcmd": "On" }'

[l0gic]

Looks like you may have a capitalisation issue,
Domoticz responds with 'SwitchLight' you are sending 'switchlight'

May be worth a try...

Kevin

[Gaijin66]

No problem, i also made that mistake

But that command really works. The actual light goes on. Thanks

Why did

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mosquitto_pub -h localhost -m '{ "idx" : 3, "nvalue" : 1 }' -t 'domoticz/in'

turned the light only on the dashboard on?

@Kevin:
The single quotes was the mistake, but thanks for the reply.

[waaren]

Why did

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mosquitto_pub -h localhost -m '{ "idx" : 3, "nvalue" : 1 }' -t 'domoticz/in'

turned the light only on the dashboard on?

I think this works as designed to enable two way communication without causing an infinite loop. There are some quite old discussions here on the forum about this subject but I have not found a clear and definite answer.
What I see when sniffing mqtt with

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mosquitto_sub -F "%U - %t - %p" -v -t '#' 

sending the command

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mosquitto_pub -t domoticz/in  -m '{ "idx" : 249, "nvalue" : 1 }'

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1545380550.427604212 - domoticz/in - { "idx" : 249, "nvalue" : 0 }
1545380550.552579044 - domoticz/out - {
   "Battery" : 255,
   "RSSI" : 12,
   "description" : "",
   "dtype" : "Light/Switch",
   "id" : "00EC0A7A",
   "idx" : 249,
   "name" : "testLight",
   "nvalue" : 0,
   "stype" : "AC",
   "switchType" : "On/Off",
   "unit" : 11
}

switching the light in domoticz GUI

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1545380976.211775471 - domoticz/out - {
   "Battery" : 255,
   "RSSI" : 12,
   "description" : "",
   "dtype" : "Light/Switch",
   "id" : "00EC0A7A",
   "idx" : 249,
   "name" : "testLight",
   "nvalue" : 1,
   "stype" : "AC",
   "svalue1" : "99",                             <<<<==== different then via the nvalue command
   "switchType" : "On/Off",
   "unit" : 11
}

[Gaijin66]

Ok. This is helpful. From now on i use the code you provided.

I can consider the matter solved. This topic can be closed.

[SweetPants]

I can consider the matter solved. This topic can be closed.

You can mark it solved yourself