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Hello. Have anyone here had success communicating with af Diehl Sharky 775 heating meter via the optical interface? If so, I would appreciate some details of which hardware and software you have used for this. I have not been able to find much details about this meter, but according to this document...

Just an update. I dissected an old 3.5 Gb harddisk which I didn't use anymore to get the really strong magnets from it.

It seems the harddisk did not die in vain. Now the water meter is answering on my requests. Now I just need to figure out how to interpret the data comming from the water meter.

Hi. A couple of weeks ago my water supplier have changed my water meter from a mechanical type to a Kamstrup Multical 21 with IR port. The manual for the water meter says that the water meter can communicate with the Kamstrup KMP protocol, but no further information is described. A couple of years a...