Hello to all,
I am new to this forum. I found this website because I am trying to connect my OpenTherm boiler with an Arduino Duemilanove as explained at this website: http://palebluedot.nl/jml/arduino/24-openthermmon.html. I did some prototyping on a breadboard and succeeded in receiving dataframes.
Now I want to place the Elektor PCB including the extra circuitry on a Carrier Card. I think this circuit is a nice idea for a plug.
Or if you really want to control your central heating system, a 2-way communication by means of an OpenTherm gateway is possible: http://www.tclcode.com/opentherm/index.html.
Just my 2 cents.