10-channel floor heating valve controller supports Tasmota, MQTT, Home Assistant

Voltlog has designed an open-source hardware floor heating valve controller powered by an ESP32 WiFi module making it compatible with Tasmota open-source firmware, and by extension MQTT protocol and Home Assistant automation framework.

The board can control up to 10 valves triac controlled outputs and spring connectors for a floor home heating system, and also offers a one-wire srping connector, an I2C header, and safety features with two fuses, although it’s obviously not UL nor TUV certified.
ESP32 floor heating valve controllerVoltlog decided to design his own board instead of buying off-the-shelf solutions because of the high price of such products and the lack of open-source firmware for integration into a home automation server powered by Home Assistant. You can flash firmware to the ESP32 either through a VoltLink USB to Serial converter or you can use your own USB to serial converter module through the on-board JST-SH 1.0mm pitch 6 pin connector. This is only needed the first time, and after which the firmware can be upgraded over the air (OTA).

The KiCad hardware designed files are available on Github, and Voltlog explains more about the hardware design, including why the isolated AC/DC transformer is weirdly installed, as well as the whole reasoning for his design choices and the software used.

The “Tasmota ESP32 Floor Heating Valve Controller” is available on Tindie for $109.99, but there seems to be only one in stock at this time.

Via Hackster.io

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2 years ago

Yeah, a cool idea buut.. I wouldn’t dare using it in my house.. non-certified could render my insurance null and void..

2 years ago

To achieve the same I use “Heatit Z-Water” by ThermoFloor which is a Z-Wave Plus (868.4 MHz and 24V-230V) regulator with 10 relay outputs to control actuators myself which cost about €300 in Europe, also sold rebranded as ZIF5031 by Logic Group (formerly Logic Soft and Logic Home Control). So cost a lot more but it is CE certified and works with most Z-Wave controllers including open source solutions based on Z-Wave JS and OpenZWave which include Home Assistant.  



2 years ago

Cool idea and good job! I have just tested it in my home and it works very well.

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