Communicate with arduino wemos d1 mini

I see, it seems the kodi might be after new update release.
Another question this might be not related and wrong thread, mind me to know or in which thread should i ask this,
I am planning to run volumio os on raspberry pi3b+ and i just want to know how to communicate this with arduino wemos d1 mini with attached small oled for idle logo and volume display when i turn the rotary encoder.

Thanks,