http://djworx.com/ableton-releases-full-midi-display-spec-push-2/
https://github.com/Ableton/push-interface/blob/master/doc/AbletonPush2MIDIDisplayInterface.asc
http://djworx.com/ableton-releases-full-midi-display-spec-push-2/
https://github.com/Ableton/push-interface/blob/master/doc/AbletonPush2MIDIDisplayInterface.asc
Glad to see Ableton finally embrace proper documentation of their hardware