- Lower cost for the same functionality as my old thermostat: 30 EUR of material against 300 EUR for a commercial system (and then i'm ignoring the fact that after initial price, some also need subscriptions)
- fully opentherm compatible, with all advantages of a modern modulating system (many commercial weather dependent systems only support on/off protocol)
- no private data (e.g. wheter or not i am at home) in a public cloud
- Full control of the boiler if set to manual
- All boiler sensors available in domoticz and the ability to send notification (e.g. on low water pressure)
- Domoticz timers have much more options than the ones on commerical thermostats
- No need for an expensive (also 100+ EUR) outside temperature connected to the boiler (any temperature device in domoticz can be used, e.g. buienradar)
- Full domoticz integration, so heating be part of scenes, scripts and other events
1. Instead of a "normal" thermostat, i wanted a weather dependent system ("weersafhankelijk regeling" for the dutch among us)
2. I wanted full domoticz integration
and the good news is: I succeeded by creating a combination of changed firmware and a domoticz plugin. And since i like sharing, i put it on github: https://github.com/akamming/Domoticz_Thermostate_Plugin. Feel free to reuse what i built. To help, i created installation instructions, which can be found in the Readme.md file on github.
it is now working OK for a few days, but might still be buggy. if you encounter anything, just let me know ...