ornament & crime (o_C) is a collaborative open-source project by Patrick Dowling, mxmxmx, and Tim Churches.
 
This version (OC 4.1 or O.R.N.8.) is developed by Paul Stoggregen (creator of Teensy) and DJ Phazer to specifically run the Phazerville firmware on the Teensy 4.1 board.
 
This version of Ornament and Crime runs two sets of the original OC firmware (4 apps at a time) and also includes 2 lanes of audio-rate DSP. 8 CV ins, 8 CV outs, 2 Audio ins, and 2 Audio outs.
 
The expansion ports are available to break out 8 Trigger ins, USB, and MIDI.
 
This is a difficult build and not recommend for beginners.
 
Build guide here