Hey guys,
I've just finished to work on a little library project, that can be used to create some menu / control panels using a LCD connected via I2C, with a few buttons or a rotary encoder as input.
The library covers the input part.
Here's the github repo : GitHub - EtienneDx/Arduino-LCD-ControlPanel in case you want to check it out and / or give me feedback about the code.
I'm pretty new to c++ programming so I'm pretty sure I missed some important stuff(nomenclature etc...)
Hope you like it 
PS: I don't own any Rotary encoder for now, if someone could check if the code works that would be awesome