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ptweety / node-red-contrib-ccu

Node-RED Nodes for the Homematic CCU
https://flows.nodered.org/node/@ptweety/node-red-contrib-ccu
MIT License
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Documentation on ccu-mqtt #9

Closed JMyrng closed 1 year ago

JMyrng commented 1 year ago

Hi there,

thanks for maintaining this awesome software.

My hole smarthome is based on MQTT and I'd like to talk to the CCU3 with MQTT too. Getting variables out works like a charm with the "ccu-mqtt" but I can't find a documentation on this input sceme. Where can I find the proper topics for setting some params in the CCU3?

Setup: NodeRed in Docker on Synology NAS, CCU3 for floor heating

Best regards, Myrng

ptweety commented 1 year ago

My hole smarthome is based on MQTT and I'd like to talk to the CCU3 with MQTT too.

In this case I would strongly recommend the CCU-Jack as an add-on for your CCU

JMyrng commented 1 year ago

There are two things that bother me about this solution:

  1. I would like to run the CCU without additional software.
  2. CCU-Jack creates its own MQTT server, but I would like to use it with an existing server.

Where can I find information about this topic sceme: hm/set/${channelNameOrAddress}/${datapoint} Is it copied from CCU-Jack?

ptweety commented 1 year ago
  1. I would like to run the CCU without additional software.

Fair enough. As you can setup Node-RED within it's own docker container on your NAS the same applies to CCU-Jack.

  1. CCU-Jack creates its own MQTT server, but I would like to use it with an existing server.

As far as I know CCU-Jack can also act as a MQTT-Bridge.

Where can I find information about this topic sceme: hm/set/${channelNameOrAddress}/${datapoint} Is it copied from CCU-Jack?

No, it's not from CCU-Jack. I think it was made up by the original author of this node years ago ... See here

JMyrng commented 1 year ago

Thank you for your quick answers.

I've got it working on my side with the ccu-mqtt node.

In case anyone is ever looking for a similar solution: To set the heating profile on a WTH-2 thermostat via ccu-mqtt node:

  1. ccu-mqtt node settings for setValue hm/set/${channelNameOrAddress}/${datapoint} where channelNameOrAddress is the serial number with the according channel, e.g. 000A9D8XXXXX41:1 and datapoint is ACTIVE_PROFILE The name of the datapoint can be sourced in the outgoing mqtt messages of the device
  2. set up a mqtt-in node in front of the ccu-mqtt node with the topic hm/set/#
  3. just send the new profile number to the topic hm/set/000A9D8XXXXX41:1/ACTIVE_PROFILE

In my opinion, this is about as easy as it gets. Thank you again for this awesome module @ptweety!