This is the final version of my arduino prototype to remotely switch on/ off the central heating and the hot water accumulator. The main purpose is to monitor inside & outside temperature, display the current status of the switches because someone else might have pushed the buttons, and allow to update the status.
The sainsmart relays will control two standard plugs where the heating and the hot water accumulator will be connected. The two outputs left are available to control something else, probably some outdoor lights. The two temperature sensors are the LM35 and a DHT11 which also has a humidity sensor and will be the on the outside.
The events of the buttons in the webpage are handled by jquery ajax calls and sent back to arduino faking an API url which just updates the status and doesn't rewrite the entire page.
The next step is to wire everything inside a nice box, wire the external connections of the temperature sensors and connect the socket.
more to come.