Great, I didn’t know there was a difference between Homematic and Homematic IP until @pmayer informed me. I will go with Homematic as I also use OpenHAB a lot in my house. So, this is my list to start:
ELV Homematic ARR kit Central CCU2 - 1
ELV Homematic ARR Kit Radio Radiator Thermostat - 4
ELV Homematic ARR kit Radio wall thermostat - 2
ELV Homematic kit radio switch actuator 4-way - 1
I will start with the CCU2 so I can get the system up and running quickly, and then look at moving back to Homegear. The 4 Way switch I will use to control the pumps for the different zones in my house. If you have any other comments or suggestions,they are most welcome. Thanks!
Yes @job, @pmayer , I understand that, thanks and I’m not giving up on Homegear after all the work I put into it. But in order to avoid divorce I have to get it up and running now and once the weather is warmer I will change to Homegear. Also, I will need to do some wiring to connect the pumps to the 4 way switch, which will take time.
What I did not mention is that I am also testing this for a friend who does not use OpenHAB, so I will sell the CCU2 to him once I am finished.
I had read about the AES key and having to pay to get devices unlocked, if I understand correctly, as long as I do not forget the key there should be no problem.
Patrik, I forgot to ask if I need to flash firmware onto your CUL, or is that just for USB devices?
No need for a firmware as you hook it up directly to the SPI of the RaspberryPi. There’s no microcontroller involved. Homegear will do the heavy lifting. It’s not a CUL but simply the communication module with an antenna jack for direkt SPI usage.
Yes, my friend does not have any home automation or technical skills so he will be happy with the CCU solution.
I presume you mean that I will have to mount the 4-way switch in a DIN box and wire it to the pumps myself - that is not a problem, I have already re-wired most of my house recently. Or is there anything else I need to be aware of about it? I have read the installation guide and it seems fairly OK.
I don’t use manual temperature settings, all is stored in the heating profiles. If i need some room warmer than usual, i switch to Comfort mode, Eco mode otherwise. If i need more heat, i turn on Boost, which is a 15 minute period in my configuration. Setting the heat profiles by script (instead of clicking the UI) was the most important reason to switch to homegear for me
If you you want to use the set temperature for multiple devices, you may redefine that item definition accordingly.
My Homematic devices (15 radiator/8 wall thermostats) did never let me down. Running since 1.5 years flawlessly with the first set of batteries.
Well, my Max! devices are boxed up and waiting for the courier tomorrow, but I should have the Homematic kit next week so I will try that. I had grouped the valves and wall thermostat in Paper UI but it only partially worked. Your solution makes sense to me now, I never thought of using a group in my item definitions.
It’s good to hear that you are happy with Homematic devices, I plan on having about 16 valves and 9 thermostats along with a few other devices. Currently, I have about 30 Z-Wave sensors, switches and dimmers working well with OpenHAB and Node-Red.