Nefit besturing cv

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Edwin2008
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Nefit besturing cv

Post by Edwin2008 »

Ik zag dat er verschillende mensen bezig zijn om achter het nefit protocol te komen. Ik kwam dit http://www.picbasic.nl/thermostaat_nefit.htm tegen, wellicht een alternatieve oplossing.
Zelf zoek ik iets slims voor een daalderop ketel die via opentherm communiceerd.

I noticed that a few people are trying to get there way into the nefit protocol. I different approach has been made at http://www.picbasic.nl/thermostaat_nefit.htm.
For me i'm looking for a smart way to communicate with a daalderop system via opentherm.
DJF3
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Nefit besturing cv

Post by DJF3 »

Ik hoorde van een collega dat een bedrijf uit Zwitserland een OpenTherm proxy heeft gemaakt met een IP interface

thermostaat-----------------||proxy||-----------------Ketel

Deze proxy 'intercept' het signaal en kan het aanpassen. Het concept klinkt erg goed alleen ben ik er nog niet achter gekomen welk bedrijf.

Groeten
DJ
MindBender
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Nefit besturing cv

Post by MindBender »

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by edwin2008</i>
<br />I noticed that a few people are trying to get there way into the nefit protocol. I different approach has been made at http://www.picbasic.nl/thermostaat_nefit.htm.
For me i'm looking for a smart way to communicate with a daalderop system via opentherm.<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
That 'solution' already caught out attention:
http://www.domoticaforum.eu/topic.asp?T ... s=picbasic
MindBender
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Post by MindBender »

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by DJF3-2</i>
<br />Deze proxy 'intercept' het signaal en kan het aanpassen. Het concept klinkt erg goed alleen ben ik er nog niet achter gekomen welk bedrijf.<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
I thought we agreed on posting in English here to ensure more than 10 people can understand it.

That proxy won't work because all manufacturers put their own parameters in OpenTherm. Besides that, tampering wiht the traffic between the communication of the thermostat and the boiler is the last thing you would do: If thermostat commands the boiler to heat, but the proxys tampering prevens it to actually do so, the advanced self learning algorithms inside the thermostat get mis-tuned leading to temperature instability and less energy efficiency.

Here's a more simple solution:
http://www.nerdclub.nl/remeha_gateway/index.html
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