OpenTRV
Open-Source Thermostatic Radiator Valve
Retrofit completely-open reference mechanical/hardware/software design for zoned heating control not relying critically on any proprietary/hacked components.
The aim is to include at least one complete mechanical and software design for a replacement TRV head that can be retrofitted without any plumbing plus at least one simple boiler control to allow end-to-end open soft heating zoning, with the ability to connect to home automation system or the Net if required.