I have integrated my Heatmiser Neo system in to smarthings via using a java API Server which communicates to Heatmiser Neo Hub.
Now before you all ask for it, its not at a point where I’m happy with it and have had a break on it due to frustration;
Firstly using my approach I can’t have many device handlers due to the poor way in which the API Server response is dealt with. I essentially need to develop a smartapp or have many listening ports on the API Server.
While I have got the general on/off working I cant work out how the code to poll the temperature and/or increasing/decreasing it.
If I do somehow find the will to pick it up again and get it working ill post about it, but using the smartthings IDE is too frustrating to me and I dont know if im doing it wrong or I have hit one of the many bugs.
Ideally you would do it via direct zigbee but as stated its used in a standard way in regards to HMN. /sigh