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Re: OpenTherm weather dependent heating control
Posted: Sunday 22 June 2025 14:59
by Maciek90
Is this what you meant?
Code: Select all
{
"Battery" : 255,
"LastUpdate" : "2025-06-22 14:56:02",
"RSSI" : 12,
"description" : "",
"dtype" : "Temp",
"hwid" : "47",
"id" : "145AE",
"idx" : 1374,
"name" : "In",
"nvalue" : 0,
"org_hwid" : "47",
"stype" : "LaCrosse TX3",
"svalue1" : "26.00",
"unit" : 1
}
Re: OpenTherm weather dependent heating control
Posted: Monday 23 June 2025 8:03
by akamming
What do the general status and opentherm status of the main screen of the firmware show?
Could you also switch on the "Debug Messages to MQTT", and then post the output of the following command (make sure you do a restart after you typed this command):
Code: Select all
mosquitto_sub -t domesphelper/text/DebugToMQTT/state -u <your username> -P <your password>
You should see something like:
Code: Select all
07:24:11 Configfile saved
07:24:14 Succesfully (re)connected, starting operations
07:24:15 Time was set
07:24:22 Received message on topic [domoticz/out/2019], payload: [{
"Battery" : 255,
"LastUpdate" : "2025-06-23 08:19:56",
"RSSI" : 12,
"description" : "",
"dtype" : "Temp",
"hwid" : "36",
"id" : "0002",
"idx" : 2019,
"name" : "Ground Temperature (10 cm)",
"nvalue" : 0,
"org_hwid" : "36",
"stype" : "LaCrosse TX3",
"svalue1" : "16.3",
"unit" : 2
}
]
07:24:22 First temperature (16.30) received, ready for climate mode
07:24:22 PID Mode, PID=(0.00,16.30,73.70), total: 90.00
07:24:23 PID Mode, PID=(0.00,16.30,73.70), total: 90.00
07:24:24 PID Mode, PID=(0.00,16.30,73.70), total: 90.00
07:24:26 PID Mode, PID=(0.00,16.30,73.70), total: 90.00
07:24:27 PID Mode, PID=(0.00,16.30,73.70), total: 90.00
07:24:28 PID Mode, PID=(0.00,16.30,73.70), total: 90.00
Re: OpenTherm weather dependent heating control
Posted: Monday 23 June 2025 15:19
by Maciek90
What do the general status and opentherm status of the main screen of the firmware show?
as in the picture below
Could you also switch on the "Debug Messages to MQTT", and then post the output of the following command (make sure you do a restart after you typed this command):
Code: Select all
14:31:59 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
14:32:00 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
14:32:01 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
14:32:01 Received message on topic [domoticz/out/1374], payload: [{
"Battery" : 255,
"LastUpdate" : "2025-06-23 15:32:02",
"RSSI" : 12,
"description" : "",
"dtype" : "Temp",
"hwid" : "47",
"id" : "145AE",
"idx" : 1374,
"name" : "In",
"nvalue" : 0,
"org_hwid" : "47",
"stype" : "LaCrosse TX3",
"svalue1" : "27.00",
"unit" : 1
}
]
14:32:02 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
14:32:03 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
14:32:05 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
Re: OpenTherm weather dependent heating control
Posted: Monday 23 June 2025 22:17
by akamming
Maciek90 wrote: ↑Monday 23 June 2025 15:19
What do the general status and opentherm status of the main screen of the firmware show?
as in the picture below
Could you also switch on the "Debug Messages to MQTT", and then post the output of the following command (make sure you do a restart after you typed this command):
Code: Select all
14:31:59 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
14:32:00 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
14:32:01 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
14:32:01 Received message on topic [domoticz/out/1374], payload: [{
"Battery" : 255,
"LastUpdate" : "2025-06-23 15:32:02",
"RSSI" : 12,
"description" : "",
"dtype" : "Temp",
"hwid" : "47",
"id" : "145AE",
"idx" : 1374,
"name" : "In",
"nvalue" : 0,
"org_hwid" : "47",
"stype" : "LaCrosse TX3",
"svalue1" : "27.00",
"unit" : 1
}
]
14:32:02 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
14:32:03 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
14:32:05 PID Mode, PID=(0.00,27.00,-17.00), total: 10.00
It’s working correctly. Your setpoint is set to 19. It recieves a value of 27 so the setpoint for the heating/cooling device is set to 10. What is the issue then?
Re: OpenTherm weather dependent heating control
Posted: Tuesday 24 June 2025 10:16
by Maciek90
Oh sorry, my mistake! I was looking at the Temperatures>Thermostat>-127 (like in the picture) readings. Now I know that the inside temperature works fine.
I have another problem. What about the outside temperature? I don't have a dedicated outside temperature sensor for the boiler. Until now, I used the sensor in Domoticz. In the plugin, I could provide its IDX. How can I currently use the sensor from Domoticz?
Re: OpenTherm weather dependent heating control
Posted: Tuesday 24 June 2025 13:00
by akamming
Maciek90 wrote: ↑Tuesday 24 June 2025 10:16
Oh sorry, my mistake! I was looking at the Temperatures>Thermostat>-127 (like in the picture) readings. Now I know that the inside temperature works fine.
I have another problem. What about the outside temperature? I don't have a dedicated outside temperature sensor for the boiler. Until now, I used the sensor in Domoticz. In the plugin, I could provide its IDX. How can I currently use the sensor from Domoticz?
outside temperature is the opentherm outside temperature (in other words: it will give a reading if you have an outside temperature attached directly to your boiler)
I understand your point: wasn't aware of it until now, but indeed since you could use any idx for outside temperature using the plugin. when you use the firmware itself as thermostat, you can only use the internal sensor. It is a good idea though, Maybe in the future i will add this capability.
Re: OpenTherm weather dependent heating control
Posted: Wednesday 25 June 2025 20:01
by Maciek90
Would you be so kind as to try to add this option before the heating season starts?
I used the option with sensors in Domoticz in combination with the plugin and it worked very well. In the current situation I will have to buy an outside temperature sensor for the boiler.
Re: OpenTherm weather dependent heating control
Posted: Saturday 28 June 2025 10:45
by akamming
I put it on my todo list. When I have Some time I Will add it…
Re: OpenTherm weather dependent heating control
Posted: Tuesday 01 July 2025 18:01
by Maciek90
In that case I'll wait patiently
Re: OpenTherm weather dependent heating control
Posted: Sunday 13 July 2025 14:28
by akamming
Maciek90 wrote: ↑Tuesday 01 July 2025 18:01
In that case I'll wait patiently
i just updated the code, so you can now also use mqtt for the outside temperature.
it's not a setup i use for myself, so i could not test very well. Pls let me know if it works.
Re: OpenTherm weather dependent heating control
Posted: Tuesday 15 July 2025 20:41
by Maciek90
I'll try it in a few days.
Re: OpenTherm weather dependent heating control
Posted: Tuesday 15 July 2025 22:11
by HvdW
What is the difference between the ihormelnyk gateway and the nodoshop gateway?
Same functionality, different format?
Re: OpenTherm weather dependent heating control
Posted: Tuesday 22 July 2025 7:10
by Maciek90
i just updated the code, so you can now also use mqtt for the outside temperature.
it's not a setup i use for myself, so i could not test very well. Pls let me know if it works.
Something must be wrong. I've tried various sensors in Domoticz, and each one shows an outside temperature of 100 degrees Celsius. On the screenshot below I entered the same idx as for the inside temperature, because I am sure it works, but it also shows the outside temperature of 100 degrees, and it should show the same as the inside temperature.
Re: OpenTherm weather dependent heating control
Posted: Wednesday 23 July 2025 18:11
by akamming
Maciek90 wrote: ↑Tuesday 22 July 2025 7:10
i just updated the code, so you can now also use mqtt for the outside temperature.
it's not a setup i use for myself, so i could not test very well. Pls let me know if it works.
Something must be wrong. I've tried various sensors in Domoticz, and each one shows an outside temperature of 100 degrees Celsius. On the screenshot below I entered the same idx as for the inside temperature, because I am sure it works, but it also shows the outside temperature of 100 degrees, and it should show the same as the inside temperature.
You are using the same topic for inside and outside temperature. That is not correct. That should be a different one.
Fix that first and then let me know the results
Re: OpenTherm weather dependent heating control
Posted: Friday 25 July 2025 19:55
by Maciek90
Yes, I know I shouldn't use the same theme for both temperatures. I gave a bad example in the attached screenshot. I tried different IDXs and the situation was the same. I think the problem was elsewhere. My external sensor wasn't transmitting to Domoticz/Out, which is why I wasn't seeing the readings in the ESP panel. I think I managed to solve the problem and now I have readings for both the outside and inside temperatures.
However, I found another problem. In the previous software version, I could also control the options shown in the screenshot below from Domoticz. Now, in Domoticz, I can only control the Curvature option. The other settings didn't appear in Domoticz.
Re: OpenTherm weather dependent heating control
Posted: Friday 25 July 2025 20:42
by akamming
Maciek90 wrote: ↑Friday 25 July 2025 19:55
However, I found another problem. In the previous software version, I could also control the options shown in the screenshot below from Domoticz. Now, in Domoticz, I can only control the Curvature option. The other settings didn't appear in Domoticz.
It’s not a problem of the device. But it’s a limitation of domoticz which implementatis a mqtt number device a bit weird.
In domoticz It’s implemented as a Configuration item instead of as a controllable input. If you got to hardware, is a button “setup” on the mqtt ad line (at least i think, might also be called “settings”. In Dutch It’s “instellingen”). If you click it you can see “Configuration parameters”, which also invalide these settings.
Re: OpenTherm weather dependent heating control
Posted: Saturday 26 July 2025 16:38
by akamming
Project Update: Now in Visual Studio Code!
I’ve migrated the esp_domoticz_opentherm_handler project from the Arduino IDE to Visual Studio Code. This change makes development and maintenance much easier, and brings all the benefits of VS Code’s modern environment.
Important:
If you want to use this code, please make sure to carefully follow the instructions in the README.md file. The setup and build process is now different from the Arduino IDE, and the README contains all the necessary steps and dependencies.
Feel free to ask questions or share feedback!