User Guide

OS-303 Firmware - User Manual v0.7

Most of the standard 303 sequencer functions work the same as the original or other clones, so you should be able to get started with any existing 303 sequencer tutorial.

This guide provides a quick-reference of button combos and menus specific to the OS-303 firmware.

Modes

Pattern Play

TODO

Pattern Write

TODO

Track Play

TODO

Track Write

TODO

Config Menus

Global Config

Hold FUNCTION + press CLEAR for the global config menu. Each of the 8 pattern select keys/LEDs represents a toggle option:

1. MIDI Note Receive
2. MIDI Clock Receive
3. MIDI Note Send (not yet implemented)
4. MIDI Clock Send
5. MIDI Program Change Receive
6. MIDI Program Change Send
7. (unused)
8. (unused)

Press FUNCTION to exit.

Quantizer Menu

In either Play Mode, Hold FUNCTION + press PITCH for the quantizer menu. The 12 pitch keys/LEDs can be used to enable/disable each semitone. (The 13th key has no effect.) Pattern steps will round down to the nearest enabled pitch.

Press FUNCTION to exit.