OpenTherm Thermostat firmware v2.2
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  • DIYLESS
  • 2025.01.25

OpenTherm Thermostat firmware v2.2

A new v2.2 is ready to download.

Shop Update
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  • DIYLESS
  • 2025.01.18

Shop Update

We have got a new products available in our shop. From now on you can buy a soldered versions of the master / ESP thermostat shields. They are functionally the same as their unsoldered counterparts.
Also, we provide an Europe-wide DHL Express shipping or parcel locker / parcel point delivery to some EU countries.

ESPHome OpenTherm Thermostat
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ESPHome OpenTherm Thermostat

In today’s smart home revolution, thermostats play a key role in optimizing energy use and maintaining comfort. While there are plenty of ready-made options, building your own thermostat is an exciting alternative. The DIYLESS Thermostat offers a perfect blend of flexibility and affordability, making it an excellent choice for enthusiasts. When paired with the versatility of ESPHome firmware, it unlocks endless possibilities for customization, ideal for tech-savvy DIYers.

OpenTherm Thermostat firmware v1.10
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  • DIYLESS
  • 2024.02.25

OpenTherm Thermostat firmware v1.10

A new v1.10 is ready to update.

OpenTherm Thermostat Initial Configuration
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  • DIYLESS
  • 2022.10.19

OpenTherm Thermostat Initial Configuration

Web configuration allows you control boiler and set-up WiFi connection, Home Assistant integration and MQTT broker settings