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Yes. This plugin allows you to control the setpoint and read the current temperatures. I supports a regular serial port and a NetMedia SitePlayer serial port over Ethernet. After testing is done, I will release a first version and I hope to add advanced configuration and monitoring features to later releases. It won't be a free plugin, though.

Will this plugin also support the gateway, or only the cable that connects to the heater itself?

yjb wrote:Will this plugin also support the gateway, or only the cable that connects to the heater itself?

Just the gateway

Does anybody still has the links to this project?
I have an on/off relay on my Calenta and dont want to invest in a modulating relay for my Evohome.

I do like to know boiler % and the temperatures etc.

If i read this topic correctly this should be possible. But I cant open the links i get a bad gateway error.

Do you need a Gateway? I think I still have it laying around, because it was a bit of a pity to toss it out.

I don’t need the gateway because then I would also need to control the boiler with opentherm, which is not a good option.

So if someone has the information of the links etc. it would be great!

No, you do not; The Gateway takes care of operating the boiler, using OpenTherm. You only need two instruct the GateWay to do things for you, protocol documented here:
http://www.nerdclub.nl/remeha_gateway/index.html

MaikelK wrote:So if someone has the information of the links etc. it would be great!

The missing links have all been archived by the Wayback Machine.