HackMe Vectr: 3D Controller and Sequencer for Eurorack

Single-rack. 
[from hackmeopen.com]

Vectr is a sequencer. Vectr can record up to 50 seconds of position sequences for playback. Sequence recording and playback can be synchronized with other modules and Vectr can be used as the master clock source for your entire system. Sequences can be saved and recalled later even after power down and multiple recorded sequences can be quickly recalled. Sequences can be automatically recorded in any number of clock lengths easily and quickly.

Vectr has layers of depth. At the surface, Vectr is a very simple to use controller and sequencer. But, Vectr has deep options for programmability through a built in and easy to use menu system. Many characteristics of the outputs and various playback and recording parameters can be changed to customize Vectr to your system and how you'd like to use it.

Vectr also has a number of performance modes for live interaction. Sequences can be overdubbed, on all three axis outputs or for only one output at a time or any combination. Outputs can be quickly muted, the sequences paused and restarted, and you can move freely between sequenced mode and live mode at any time. You can also playback a sequence using hand movements, scratching in the air as if you were moving a record.

Vectr also has modulation parameters, taking a CV input to manipulate sequence playback, or the output values themselves.

By itself, Vectr is incredibly fun. With all these features, Vectr is also incredibly powerful.