Developer Mike Perkowitz shared this demo of Hachi – a multi-function MIDI sequencer that runs on a Novation Launchpad Pro and a headless computer like a Raspberry Pi.
Hachi is written in Java, and so can run on a Pi (tested), a Mac (tested), and many other platforms (untested), with or without keyboard and monitor.
Hachi (= “eight” in Japanese) can run up to 8 “modules” at a time. Available modules include several midi sequencers, a paint/animation toy, and a sequencer-controller that lets you coordinate your sequencers. Hachi is a generalized version of this simpler sequencer that I wrote for the original Launchpad. That basic sequencer runs as one module in Hachi.
Hachi is available as a free download via Github.