Hi. I am new to this all - let's say: two years in programming.
In my Garden i have a solarsystem with a MPPT75/10 controller. The MPPT75/10 is sending hex Data on a UART interface every minute. See: VE.Direct protocol GitHub
I am trying to read the HEX Data with the Atmega8 and give it to a RaspberryPi via the SPI interface.
There telegraf and grafana will do the rest.
In the next month i will give updates here.
As i have no idea of the right path to do this - i am looking forward for any hints and links to similar project / solutions you know.