KNX floor heating

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Now that I write it out loud, do I even need a thermostat? All I need to do is control a valve open/close based on a sensor value/trend.

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https://paste.pics/a228329e7f2d651e485cf368fa9265ae basically my thinking of how this would connect

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KNX floor heating

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https://community.home-assistant.io/t/pi-climate-module-for-floor-heating/180782/3 this looks pretty relevant.
Especially the KNX Expose function