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Problem solved. I am even too embarrased to tell what it was.

The question about the OLED libraries still stand howiever. Where are these .h files located?

Thanks for your tips. Yes I have the SSD1306 controller and it works fine when connected to an Adafruit Trinket. The wires are correctly connected, same as in the bmp180 project. I looked into another project too, to see if I could borrow some working code: https://z-uno.z-wave.me/projects/Mercury20...

Thank you very much for the analysis and the advise!

You are perfectly right of course, I am over-using float, and it's pure laziness on my part. I will revise the code as advised.

Thanks a bunch!

Hi, Unfortunately, I have made some changes to the code so I am not getting the same error anymore. Now it is a javanullpointerexception instead. Sending two versions of the code with the respective compiler output: z-meter_a: No nullpointexception in this one, but I could not get around the compila...

Hi, I am getting a compiler error all of a sudden. Appeared between two compiles without any change of the sourcecode in between. First did a "verify" in the IDE and it worked fine. No compile or build errors. Then clicked on "upload" to send it over to the board. Then suddenly I...

Hi, I don't have a solution to your problem, but looking at the functions available it does not seem to pe possible. The z-uno version of the library is not at all as complete as the standrard Arduino library. I have a question back though: I can't get my oled to work. When running the example code ...

Reading about the configuration parameters in z-uno (64-96) it looks like they are undefined if not set. https://z-uno.z-wave.me/z-wave/configuration-parameters/ This would be the case when a sketch reads these values for the very first time. It would be great if I could assume that if a parameter h...

Thank you for your thoughts about water flows. Any idea about the topic, EEPROM lifespan?

Hi, Does anyone know what the expected lifespan of the EEPROM is? I am reading in other foras that an EEPROM has a lifespan of about 100.000 write cycles as a rule of thumb. What speaks against this number is the the following example: https://z-uno.z-wave.me/examples/Water-Meter/ The water meter in...

Hi, I am in the process of building an electricity meter which reads the light pulses on the "official meter". I am not completely done yet. I have the HW and the program logic ready and tested. It is stable and has been running for a while. BUT, I have not yet connected the z-uno to the z...