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john30 / ebusd

daemon for communication with eBUS heating systems
GNU General Public License v3.0
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Vaillant VR920 #305

Closed christesting closed 4 years ago

christesting commented 4 years ago

I am a newbie in the area of EEBus - so maybe my question is stupid...but I will try it.

I got a new heating system from Vaillaint. Vaillant installed the VR920 to connect the VRC 700 to the LAN / Internet. The connection between the VR920 and VRC 700 is the EEBus.

Vaillant wrote me, that it is possible to use the VR920 as "interface" to the EEBus and I don´t need extra equipment to connect to the EEBus.

The VR920 has an open port: 4500

Is it possible to use ebusd to interact with the VR920 (and the VRC 700) via LAN?

thx

andig commented 4 years ago

Ebusd is about ebus. Afaik Eebus is something different. See https://www.eebus.org/ - is that what Vaillant told you?

christesting commented 4 years ago

they told me, that I can find everything at https://www.eebus.org and that I don´t have to buy extra equipment to "talk" to the VRC 700 ...

The principle is shown here (I have different euqipment): https://www.vaillant.de/heizung/produkte/vernetzte-systeme/eebus/

ok - now I unterstand why I am confused: ebus vs eebus......

john30 commented 4 years ago

eebus seems to be a complete new protocol defined from scratch, so this is not related to ebusd at all

koen-lee commented 2 years ago

The VR921 is connected and reads/writes to the ebus too (in addition to eebus). After all, the various apps use it to set things in the thermostat, so it has all required hardware to work as a ebus<>ethernet bridge. One could try to install a MITM proxy, or just sniff the traffic with Wireshark, to work out the communication between the VR921 and the Vaillant cloud/app so see how feasible it is to use it with open source software.