Search found 16 matches
- Fri Oct 13, 2017 4:24 pm
- Forum: Opentherm Gateway Forum
- Topic: Modification of firmware
- Replies: 5
- Views: 6735
Re: Modification of firmware
Huh. Looked at ASM code. Last time I used assembler was like 10 years ago, and even then it was optimisation of single function, not complete code. Complete asm code was something like 20 years ago last time :) And while assembler itself isn't a problem, trying to get complete picture of the code lo...
- Fri Oct 13, 2017 12:57 pm
- Forum: Opentherm Gateway Forum
- Topic: very multi-zone setup
- Replies: 7
- Views: 10668
Re: very multi-zone setup
This implementation is still rudimentary from my point of view, as I want to extend it with "heating response" calculations (which will be indirect measure of room volume and heat loss capability) and "granted heat-up time" (which means that is zone setpoint is increased, I want ...
- Fri Oct 13, 2017 12:48 pm
- Forum: Opentherm Gateway Forum
- Topic: very multi-zone setup
- Replies: 7
- Views: 10668
Re: very multi-zone setup
If somebody has interest, I finally found some time and made setup for multizone control. I have number of zones, where primary data (zone setpoint and current zone temperature) is provided by MAX! wall thermostats. And now my code, according to that data and taking into account outside temperature,...
- Mon Sep 18, 2017 3:20 pm
- Forum: Opentherm Gateway Forum
- Topic: Modification of firmware
- Replies: 5
- Views: 6735
Modification of firmware
Hello, This is question mostly to hxvl, I am working toward solution where I manually calculate and control CS, seems to be most reasonable, after all in my setup (15 heaters with controlled valves and bunch of thermostats in the rooms). But, in case of connectivity loss, it would be nice to have op...
- Sun Sep 17, 2017 1:30 am
- Forum: Opentherm Gateway Forum
- Topic: Opentherm Gateway no longer responding
- Replies: 3
- Views: 5354
Re: Opentherm Gateway no longer responding
Just in case, if someone hit the same issue, you can solve it without power cycling. Just reset OTGW. In my case, I run ESP8266-transparent-bridge on ESP8266, and connected GPIO2 to RST. If it got confused after boot, I just cycle state of GPIO2 with AT command of ESP firmware and it works. Although...
- Tue Jan 31, 2017 11:15 pm
- Forum: Opentherm Gateway Forum
- Topic: Moving OT Monitor to ESP8266
- Replies: 2
- Views: 5389
Re: Moving OT Monitor to ESP8266
In fact, I think I am going to choose simpler route. I am going to take ESP8266-transparent-bridge as a base, and add to it MQTT client which can send/receive a bit more than OTM. This is task which is reasonably simple. As a main feature, there will be time-out for an override values. If there is n...
- Tue Jan 31, 2017 6:27 pm
- Forum: Opentherm Gateway Forum
- Topic: Moving OT Monitor to ESP8266
- Replies: 2
- Views: 5389
Moving OT Monitor to ESP8266
It looks like ESP8266 is becoming choice for WLAN versions of OTGW. But everybody uses it as simple wifi-serial bridge, while ESP8266 has quite a hardware capabilities for its size. And could run something similar to OT monitor (or at least MQTT) on it's own. reducing number of links in the chain (e...
- Fri Jan 06, 2017 11:09 am
- Forum: Opentherm Gateway Forum
- Topic: OTM : automatic reconnect to OTGW via network
- Replies: 7
- Views: 7286
Re: OTM : automatic reconnect to OTGW via network
BTW, I think ESP-link is a bad choice of firmware for OTGW. It has thing of automatic inactivity disconnect. And while it should be not an issue, as OTGW normally flows enough of information, I think that something like ESP-bridge is better suited.
- Fri Dec 30, 2016 4:49 am
- Forum: Opentherm Gateway Forum
- Topic: OTM : automatic reconnect to OTGW via network
- Replies: 7
- Views: 7286
Re: OTM : automatic reconnect to OTGW via network
If the connection isn't properly closed, but silently disappears, OTMonitor won't detect that until it tries to send something. You can enable automatic clock updates (Options->Thermostat (F2) "Automatically update the gateway clock"). That will cause OTMonitor to send a command to the OT...
- Wed Dec 28, 2016 12:12 pm
- Forum: Opentherm Gateway Forum
- Topic: OTM : automatic reconnect to OTGW via network
- Replies: 7
- Views: 7286
OTM : automatic reconnect to OTGW via network
I have setup where my OTGW embeds ESP8266 and automatically attach to AP, which is provided by RPi used for home management (separate from normal WiFi family uses).And last night I got situation when OTM stopped to receive information from OTGW. I restarted OTM and it works OK again. I suspect that ...
- Wed Dec 28, 2016 12:09 pm
- Forum: Opentherm Gateway Forum
- Topic: very multi-zone setup
- Replies: 7
- Views: 10668
Re: very multi-zone setup
To have everything in one place isn't a big deal. I am leaning toward writing separate daemon which receives all information via MQTT and does all the calculations. In this case, for every zone I have 1) current temperature 2) setpoint 3) valves position plus I have outside temperature and return wa...
- Wed Dec 28, 2016 12:05 pm
- Forum: Opentherm Gateway Forum
- Topic: Humidity settings for Honeywell Touch Modulation
- Replies: 5
- Views: 5677
Re: Humidity settings for Honeywell Touch Modulation
I tried to enable ventilation, it was a first thing I did 
Didn't;t have luck. But maybe then I have to configure override for ventilation function on OTGW, so thermostat thinks that there is support on other side.

Didn't;t have luck. But maybe then I have to configure override for ventilation function on OTGW, so thermostat thinks that there is support on other side.
- Tue Dec 20, 2016 10:49 pm
- Forum: Opentherm Gateway Forum
- Topic: Humidity settings for Honeywell Touch Modulation
- Replies: 5
- Views: 5677
Re: Humidity settings for Honeywell Touch Modulation
I tried different values as well , same "no result".
If I understood what I have to see in logs, then I don't see it set in the logs.
I tried different SR values, they work. But not humidity.
If I understood what I have to see in logs, then I don't see it set in the logs.
I tried different SR values, they work. But not humidity.
- Tue Dec 20, 2016 10:42 pm
- Forum: Opentherm Gateway Forum
- Topic: very multi-zone setup
- Replies: 7
- Views: 10668
Re: very multi-zone setup
Actually, I am going to use both MAX! and OT thermostat in living room, but! I am going to feed to valves temperature and room setpoint from OT thermostat (the same way as they would get it from MAX! wall thermostat). There is no problem with this. In my case, I am going to get rid of MAX! Cube alto...
- Mon Dec 19, 2016 12:53 pm
- Forum: Opentherm Gateway Forum
- Topic: very multi-zone setup
- Replies: 7
- Views: 10668
very multi-zone setup
I am "modernising" heating in my house. And, practically, I put on every heater controllable valve (MAX!) and in some rooms additional MAX! thermostats. I've read through forum and I know why it is not recommended stand-alone OTGW operation. But I am in doubts how to arrange multi-zone the...