no i didnt try ur code yet.

Yes i can read and write to the bus

NEFIT 10 52.6,32.6,41.4,40.9,18.8,19.0,1,1.8,3.05,0.00

and i can switch from night to manual to clock. but the software is a bit buggy. does ur code support the moduline 300? this software is for the moduline 300.

If you want to control the thermostat you need to add some code to my sketch, as I use it only for reading the bus. If you buy a second hand Moduline 200 (RC20) you'll have it up running the fastest. Maybe the sketch from @danidata is more suited to your needs. See his Github Hi bbqkees, i have the ...

What I meant was which parts, like diodes and such. Verstuurd vanaf mijn SM-G925F met Tapatalk Yes, As I said, you have all the information in bbqkees Github webpage. https://github.com/bbqkees/Nefit-Buderus-EMS-bus-Arduino-Domoticz/tree/master/Documentation This diagram is broken in two circuits ...

well. the issue then is you cant connect a a different thermostat on a nefit CV cause of the EMS bus
and the goal is not realy to connect it to domoticz speificly but more to be able to control the temp remotly

so how should i get started? i already have domoticz running on an old laptop. Do i need a arduino? or can it also be done without it?
i have no experience with arduino yet. do i need to solder that board myself in ur diagram?

Hello,

Im investigating the possebility to remote control the nefit thermostat is that possible with ur libary bbqkees?

i have the Nefit Moduline 100. the most simple nefit thermostat.