Hi till,
I just came back from vacations with family 6 hours ago 
So, no progress yetā¦
Regards,
Daniel
After quite a few hours of searching the internet, I found the same products (Elvaco M-Bus Splitter, MSP-32 form STV Electronics) as you mentioned.
To your list I can add
- the approximate price tag as found per september 2023 for the MSP-32 form STV Electronics: EUR 700
- Multi-master from ADFWeb (HD67063-232-B2-20 M-Bus Multi-Master / Modbus - Converter) for EUR 300, exists as version for RS232 as well as RS485
The price may be adequate for an industrial system or a large building, however for a home-owner or someone in a rental flat, this may be a bit steep [1]ā¦ Unfortunately (?) there are not yet such products to be found on aliexpress 
[1]: It all depends on the value of time. If we sum up the time invested in this thread, we may approach or breach the price of the ADFWeb-solutionā¦
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Yes, the multi master solutions are far too expensiveā¦ I ended up buying an IR interface because I couldnāt get the circuit to work. The IR solution has the downside that I have to press a physical button on the meter after a power outage or longer (15min) inactivity, but itās ok for now. Still hoping that anybody more capable of electronics builds @the78moleās circuit and creates some schematics that even I can solder together 
. With an ESP32 this could be a really cool WIFI based meter reader for relatively cheap.
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Hi All,
Iām struggling with bmeters mbus watermeter reading.
Unfortunately I didnāt succeed in reading any data from rfm-mb1.
(I also tried wmbus with rfm-tx1.1.)
I have the ttl to mbus slave module.
Could anyone support?
Thank you!
Hi @paulius2k , (or anyone) 
Did you succeed in the end to read m-bus data?
i bought the same m-bus master as dknt, i asked him for how he connected is all, but he seams to be not active anymore in his forum.
i really would like to read data from my heat meter.
my knowledge about this is to little, i am unable to find the anser myself.
thanks in advance
Hi @the_knarf,
I have described my journey and some underwater stones I have stepped on in this comment:
Have you read and tried following the detailed guide created by the78mole, the link of which is provided in this comment?:
Where do you get stuck?
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Thanks for your reply.
I initially asked this to dknt, he used the exact same hardware as i have.
I then just need to do more reading and trying to understand this.
I want to start with how should i connect the meter-bus master to the esp module.
I need to find the time to dive into this.
Oh I havenāt managed to run it on ESPHome. I only managed to read my M-bus meter connected directly to my Linux machine.
As far as I can tell, no-one who commented in this thread managed to integrate via ESP / ESPHome except for the initiator of this post @Snedig in July 2019 :))
Thanks @skupu - these seem to be very good M-bus resources for integrating directly or via M-bus-to-RS485 converters. However, I could not find anything about the ESPHome integration.
That is correct, although it might be usefull to write a driver. Unfortunately Iām not skilled enough yet to do it myself. Maybe you could try?
That could be someting similar to GitHub - SzczepanLeon/esphome-components
Hi @the78mole,
did you find some free time to work on this? I donāt want to buy these expensive M-Bus masters from adfweb.com
Hi till,
unfortunately not. Fully occupied with other stuff.
Regards,
Daniel
Is it possible to make mbus decoder for APATOR water meter
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