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OpenTherm Gateway

https://www.domoticaforum.eu/viewtopic.php?t=10332

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OpenTherm Gateway

Posted: Sun Feb 22, 2015 9:13 pm
by JeroenKokhuis
Hello,

I've made the OpenTherm Gateway myself. Also programmed the pic myself. Now I want to connect the gateway to the raspberry pi running Domoticz. The raspberry pi is the slave and my nas is the master.

I've changed the refence voltage to 1.458V (VR=4). Now I get no errrors anymore:

Code: Select all

2015-02-22 14:53:00.525 OTGW: SC: 14:53/7
2015-02-22 14:53:00.631 (OpenTherm Gateway) Temp (Control Setpoint)
2015-02-22 14:53:00.651 (OpenTherm Gateway) Thermostat (Room Setpoint)
2015-02-22 14:53:00.669 (OpenTherm Gateway) Temp (Room Temperature)
2015-02-22 14:53:00.688 (OpenTherm Gateway) Temp (Boiler Water Temperature)
2015-02-22 14:53:00.708 (OpenTherm Gateway) Temp (DHW Temperature)
2015-02-22 14:53:00.727 (OpenTherm Gateway) Temp (Outside Temperature)
2015-02-22 14:53:00.747 (OpenTherm Gateway) Temp (Return Water Temperature)
2015-02-22 14:53:00.767 (OpenTherm Gateway) Thermostat (DHW Setpoint)
2015-02-22 14:53:00.785 (OpenTherm Gateway) Thermostat (Max_CH Water Setpoint)
2015-02-22 14:53:30.326 Hardware Monitor: Fetching data (System sensors)
2015-02-22 14:53:30.533 OTGW: SC: 14:53/7
2015-02-22 14:53:30.640 (OpenTherm Gateway) Temp (Control Setpoint)
2015-02-22 14:53:30.659 (OpenTherm Gateway) Thermostat (Room Setpoint)
2015-02-22 14:53:30.678 (OpenTherm Gateway) Temp (Room Temperature)
2015-02-22 14:53:30.697 (OpenTherm Gateway) Temp (Boiler Water Temperature)
2015-02-22 14:53:30.716 (OpenTherm Gateway) Temp (DHW Temperature)
2015-02-22 14:53:30.736 (OpenTherm Gateway) Temp (Outside Temperature)
2015-02-22 14:53:30.766 (OpenTherm Gateway) Temp (Return Water Temperature)
2015-02-22 14:53:30.790 (OpenTherm Gateway) Thermostat (DHW Setpoint)
2015-02-22 14:53:30.825 (OpenTherm Gateway) Thermostat (Max_CH Water Setpoint)
2015-02-22 14:54:00.494 Hardware Monitor: Fetching data (System sensors)
2015-02-22 14:54:00.541 OTGW: SC: 14:54/7
2015-02-22 14:54:00.670 (OpenTherm Gateway) Temp (Control Setpoint)
2015-02-22 14:54:00.702 (OpenTherm Gateway) Thermostat (Room Setpoint)
2015-02-22 14:54:00.749 (OpenTherm Gateway) Temp (Room Temperature)
2015-02-22 14:54:00.769 (OpenTherm Gateway) Temp (Boiler Water Temperature)
2015-02-22 14:54:00.788 (OpenTherm Gateway) Temp (DHW Temperature)
2015-02-22 14:54:00.808 (OpenTherm Gateway) Temp (Outside Temperature)
2015-02-22 14:54:00.828 (OpenTherm Gateway) Temp (Return Water Temperature)
2015-02-22 14:54:00.847 (OpenTherm Gateway) Thermostat (DHW Setpoint)
2015-02-22 14:54:00.865 (OpenTherm Gateway) Thermostat (Max_CH Water Setpoint)
2015-02-22 14:54:30.548 OTGW: SC: 14:54/7
2015-02-22 14:54:30.670 (OpenTherm Gateway) Temp (Control Setpoint)
2015-02-22 14:54:30.699 (OpenTherm Gateway) Thermostat (Room Setpoint)
2015-02-22 14:54:30.723 (OpenTherm Gateway) Temp (Room Temperature)
2015-02-22 14:54:30.762 Hardware Monitor: Fetching data (System sensors)
2015-02-22 14:54:30.758 (OpenTherm Gateway) Temp (Boiler Water Temperature)
2015-02-22 14:54:30.824 (OpenTherm Gateway) Temp (DHW Temperature)
2015-02-22 14:54:30.883 (OpenTherm Gateway) Temp (Outside Temperature)
2015-02-22 14:54:30.943 (OpenTherm Gateway) Temp (Return Water Temperature)
2015-02-22 14:54:31.027 (OpenTherm Gateway) Thermostat (DHW Setpoint)
2015-02-22 14:54:31.085 (OpenTherm Gateway) Thermostat (Max_CH Water Setpoint)
2015-02-22 14:55:00.209 Hardware Monitor: Fetching data (System sensors)
2015-02-22 14:55:00.557 OTGW: SC: 14:55/7
2015-02-22 14:55:00.663 (OpenTherm Gateway) Temp (Control Setpoint)
2015-02-22 14:55:00.682 (OpenTherm Gateway) Thermostat (Room Setpoint)
2015-02-22 14:55:00.700 (OpenTherm Gateway) Temp (Room Temperature)
2015-02-22 14:55:00.720 (OpenTherm Gateway) Temp (Boiler Water Temperature)
2015-02-22 14:55:00.740 (OpenTherm Gateway) Temp (DHW Temperature)
2015-02-22 14:55:00.759 (OpenTherm Gateway) Temp (Outside Temperature)
2015-02-22 14:55:00.778 (OpenTherm Gateway) Temp (Return Water Temperature)
2015-02-22 14:55:00.798 (OpenTherm Gateway) Thermostat (DHW Setpoint)
2015-02-22 14:55:00.816 (OpenTherm Gateway) Thermostat (Max_CH Water Setpoint)
2015-02-22 14:55:30.382 Hardware Monitor: Fetching data (System sensors)
But I get no values. Not in OTmonitor or in Domotics. Even not when connected to laptop with OTmonitor.

Re: OpenTherm Gateway

Posted: Sun Feb 22, 2015 11:06 pm
by hvxl
You indicate that you see problems both with OTmonitor and with Domoticz. But by only providing Domoticz logs you limit the number of people that can help to the cross-section of people that use both the OTGW and Domoticz. And since I don't use Domoticz, I'm out.

Re: OpenTherm Gateway

Posted: Mon Feb 23, 2015 11:18 pm
by JeroenKokhuis
I've made a change to the rs232 connector. I removed it en soldered a header with longer pins. No i have a connection. I see many values. But the only thing I'm struggling with is to change the room setpoint. I cannot change that. The log says that it send te right command but no response.

Re: OpenTherm Gateway

Posted: Wed Feb 25, 2015 7:58 pm
by JeroenKokhuis
I have a Remeha Calenta 40c CW5 and a Remeha Isense v17. I haven't got any errors since yesterday. But I still can't control my room setpoint. I've searched many forums. I can't find a solution.

Re: OpenTherm Gateway

Posted: Wed Feb 25, 2015 9:48 pm
by hvxl
I'm afraid iSense version 17 doesn't support that feature. See also this topic.

The first iSense firmware that is known to work is v19.

Re: OpenTherm Gateway

Posted: Sun Mar 15, 2015 12:20 pm
by JeroenKokhuis
I changed my hardware, I bought a Isense with v28 and I've Domoticz installed on my nas. For the connection to the Opentherm Gateway I use a Raspberry Pi.
In Domoticz I see a lot of devices. Including my room setpoint. I add this one. It appears under utility. I checked the favorite icon, so now it's visible under dashboard. When I click on the flame-icon I see the history not the menu where I can change the temp.

Does anyone know the solution?

Re: OpenTherm Gateway

Posted: Sun Mar 15, 2015 12:23 pm
by JeroenKokhuis
With opentherm monitor I can change the setpoint. Also with the iphone.html page.
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