Background: I have an esp8266 flashed with tasmota and setup mqtt. I have a mosquitto broker setup with a simple .conf that seems to work. I get connection and subscrition data on MQTTExplorer and have connected other clients to the sensor as well. Goal: I would like to setup a openHAB with dash…

Can’t say which guides you followed, however: Did you really create only one MQTT related thing? You need: a MQTT broker thing ( acts as a bridge between openHAB and MQTT, does need NO channel) MQTT ( generic) things, connection to the above broker thing and having channels for all needed comman…

OK, well after days of search toptics and basic tutorials… immediatly after posting this I found this: [OH3] Tasmota via MQTT Autodiscovery (Tasmota Version earlier than v12.1.1) which told me to setup auto discovery on the tasmota (I though auto discovery when the other way;) it showed up in open…

[image] overload: tele/mydevice/sensor/temperature For info, it’s unlikely that the above is the actual topic if you’re using a normal Tasmota distribution. The topic is probably tele/mydevice/sensor which will receive a JSON payload. You would then use the state transformation field in you…

@opus sorry I was not as specific as perhaps I should have been. yes I setup the mqtt broker thing first; its online then the generic thing, also online, but channels dont connect to anything (see latest update)

well, for educational purposes I would like to figure out how to set it up manually through paperUI. I understand the topics are wrong (kinda expected) and the transformation is needed, but not sure yet how to go about doing that…

do i need the transformation? the autodiscovery thing, item works: shows temp and analyse chart, but i get and ERROR:COMM under channel links. this does not seem to use a transformation that i can tell. The code section shows several topics listed, which I do not get when i go through the UI gener…

[image] overload: do i need the transformation? Depending on the autodiscovery that you have enabled, you need to have the JINJA and JSONPATH transformations installed. [image] overload: but i get and ERROR:COMM under channel links. Show us. [image] overload: Do I have to write c…

[image] hafniumzinc: [image] overload: but i get and ERROR:COMM under channel links. Show us. What, you dont believe me..:wink: [post1]

There should be more info concerning this error in the logs!

OpenHAB first config with mqtt

Setup, Configuration and Use Beginners

hafniumzinc (T) February 7, 2022, 11:28am 7

There’s not a lot of information in this thread to be able to categorically help you, but maybe this write up is useful? You could probably skip to step 6, but exact specifics will depend on the JSON payload from Tasmota.