27 Feb '15, 12pm

Controlling Central Heating Via Wi-Fi

Controlling Central Heating Via Wi-Fi

If you’ve ever lived in a building with manually controlled central heating, you’ll probably understand [Martin]’s motivation for this hack. These heating systems often have old fashioned valves to control the radiator. No Nest support, no thermostat, just a knob you turn. To solve this problem, [Martin] built a Wi-Fi enabled thermostat . This impressive build brings together a custom PCB based on the ESP8266 Wi-Fi microcontroller and a mobile-friendly web UI based on the Open Thermostat Scheduler . The project’s web server is fully self-contained on the ESP8266. To replace that manual value, [Martin] used a thermoelectric actuator from a Swiss company called HERZ. This is driven by a relay, which is controlled by the ESP8266 microcontroller. Based on the schedule and the measured temperature, the actuator lets fluid flow through the radiator and heat the room. As a bonus,...

Full article: http://hackaday.com/2015/02/27/controlling-central-heatin...

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