Wanted EmonTXv3. I have fitted a low-cost air-air heat pump at a community Hub. I am very keen to monitor temperatures, and a kind person (thanks Simon) sent me an old one, but I feel bad that I killed it by trying to convert it from 866 to 433. Has anyone got an EmonTXv3 for sale. Its just the PC board that I want, and must be 433.
By measuring input power and 4x air temperures and about 4x refrigerant sensors, I should be able to estimate the COP. It will be interesting to see how it defrosts… Given its a cheap unit, I expect it wont defrost well… we will see… it will be Emoncms - dashboard view when working.