Tindie Weblog | Small OpenTherm, HomeAssistant-integrated thermostat!

For those who’ve bought a contemporary boiler or HVAC system that helps the industry-standard OpenTherm interface, there’s rather a lot you are able to do with it! This tiny board pairs with an ESP32-S2 mini and lets you combine your current OpenTherm thermostat with varied house automation management methods, just like the ever-popular House Assistant, Tasmota, OpenHAB, and many others.

By including Wi-Fi or Bluetooth connectivity, you’ll be able to simply management the temperature in your own home based mostly on no matter inputs you need. It will be straightforward to implement a number of temperature sensors round the home to see how efficient the heating/cooling is in every room and modify your complete system for an appropriate common. Or you may implement a primary zone heating/cooling system by including an electromechanical system to open/shut HVAC vents. Your solely restrict is your creativeness!

This board is designed to be paired with the highly effective ESP32-S2 and comes with the software program to right away connect with House Assistant by way of MQTT. It is going to seem in your House Assistant monitoring software program, and in case your HVAC/boiler system helps it, it can additionally report details about the standing of the system: whether or not it’s operating, whether or not the flame is current, move info, in addition to outlet and return temperatures for boilers. This will allow you to calculate the heating effectivity of your system to a really high-quality stage, permitting you management over how a lot vitality you utilize and the way a lot of a CO2 footprint you produce.

Programs like these will develop into increasingly widespread as vitality effectivity turns into more and more necessary as we work to combat local weather change. You will get began right this moment with this totally customizable system!