Fredrik Öhrström

@TychoWerner https://www.ista.com/fileadmin/twt_customer/countries/content/Tutorial/Documents/ista_symphonic.pdf page 9.

@TychoWerner No, it is 128 bit AES keys. Assuming they follow wmbus protocol standard. We

@TychoWerner Either you buy the meter yourself, or in the case of water meters, you can ask the water company for they key. Often they will provide it, but not...

A proper setup has a unique key per meter. Then there is everything in between a single key for all meters. A single key that is known and no key...

Aha! Yes that makes sense. Well, I suggest first buying a cheap rtsldr and listen to the radio traffic with rtl_433 for a while to see what is being sent...

@TychoWerner How would I know? :-) Looks similar to all other rtl-sdr dongles.

Ok, now you have to listen at the proper frequency and for a long time. You have to capture two messages, one sent to the meter to trigger readout and...

Very nice indeed! I am not an expert on HA but I can merge this, since @Bluhme1 confirms it is working. :-) This will not mess up existing installations where...

Thank you for your thoughts on automating the templates! I am working towards a more declarative and smarter way of maintaining the drivers. I will keep these manual templates in...

I was thinking about how to deprecate old drivers, so that we can normalize field names in the json. It should not happen often in the future, but we need...