Hello. The first of all, thanks for sharing your work.
I am trying to create a simple proyect. My intention is read values for inverter Sunny Boy 5.0 and shows the values on the LCD 20x4.
Then, it's more simple see the values of my photovoltaic.
The values read correctly from the inverter but When I added the code for LCD I2C 20x4, the sketch is unestable.
The LCD shows caracters wrongs and even, the Connection TCP with the inverter hang out.
Please can you review the sketch?
SMAv2.1a.zip