KNX Hardware support

[emme]

Would anyone interested in developing a KNX Hardware connector (IP) for Domoticz?

I can provide my (poor) experience and certification, but I'm totaly blind in coding

The system is almost a telegram protocol based on Groups, Acknoledge and data....

thanks
ciao
M

[solidum90]

Hi/Ciao emme,
I've Vimar By-Me domotic system, it's based on EIB topology, the same KNX bus.
I'm using this device http://guidopic.altervista.org/alter/knxgate.html (guido, another italian ) it uses an esp8266, it's very very cheap.
With my own little system that acts as an interface to / from domoticz..
It is now a year that I have in mind to rewrite Guido's ESP8266 firmware basing on MQTT but I have never found the time to do it.

Otherwise there are gateway knx that are a TCP-IP modbus server but they are quite expensive (2/300€)

[emme]

Ciao,

that links refer to a gateway... which is good but I already have the USB and IP Interface, I meant to develop a fully working hardware connector that could handle the KNX telegram (in/out) and link a device to a group based on its datapoint.

Ciao
M

[papoo]

hello emme

did you manage to inter connect simply knx and domoticz?

[emme]

Yes, I did, using NodeRed and only for DPT1 and 5

I made a flow between KNX and Domoticz (MQTT) with a reference map that link KNX group ==> Domoticz action and viceversa

It's running since 2 month with no special issues... well sometimes it loops on a specific lamp which assume it' a status group error in the ETS project

[papoo]

thanks for your response.

[papoo]

Please, can you tel me which node do you use for that?