Hi dear community!
Just wanted to share my latest project automating my home.
We had an about 20 years old floor heating control called “Velta Genius” with a central unit controlling the thermal circuits and remote units in each room where you could set the temperature which also had a temperature sensor.
The system got more and more unstable, getting replacement parts got harder and expensive.
So I had a closer look and the main unit and found basically two PCBs in it, one with all the logic circuits and processors and stuff and another controlling the main power to each thermal circuit.
So it was quite easy to design a replacement logic board based on an ESP8266.
Here the original unit with remotes:
And the original unit PCB:
And here with my replacement board:
I designed for an ESP8266 module but finally I used an ESP07S module with an external antenna, because the units are at rather problematic places in the house WLAN wise…