EXaDrums Server is now available on Github.

Used together with eXaDrumsLite it allows you to use eXaDrums on a headless Raspberry Pi distribution. Although it's just a server, it has access to all the functionalities of eXaDrums. And even if only a few of them are currently implemented, I plan to make them all available so that the Android application can be used as a proper module.

As you can see, eXaDrums Server communicates with eXaDrums Lite using Json RPC 2.0, which is quite fast to parse, and makes the server running decently on a Raspberry Pi Zero W.
I'll keep posting logs about the Android app status, as I plan to develop it further and make it as complete as possible.