Third-party firmware. Not supported or endorsed by 4ms Company. Flash at your own risk.
Catalyst VoltSeq — v1.5.1
UX refinements for VoltSeq mode. Saved state is not compatible with v1.5.0 — all channels will reset to defaults on first boot after flashing.
Changes
Range simplified to four options
CV channel range (enc 4 in Channel Edit) now offers four spans: 2V / 5V / 10V / 15V. The previous seven-step ladder (1–4V in 1V increments plus 5/10/15V) had too many options with too little practical difference in the lower end. Default is 5V. Colors: orange (2V), yellow (5V), green (10V), blue (15V).
Transpose display: red / blue
Transpose (enc 6) now uses a clean red ↔ blue gradient: dim-red at −1V ramping to bright-red at −5V, grey at 0V, dim-blue at +1V ramping to bright-blue at maximum. Previous mixed warm/cool colors (orange, pink, lavender, etc.) are replaced.
Random deviation in semitones
The random deviation encoder (enc 7 in Channel Edit) now steps in semitones instead of whole volts, with a maximum of ±3 octaves (36 semitones). Unipolar (CW): light grey gradient; bipolar (CCW): salmon gradient. Octave boundaries (12, 24, 36 semitones) snap to blue (CW) or red (CCW) for easy landmark recognition.
Peek-before-edit for Length and Clock Div
Both enc 2 (Length) and enc 5 (Clock Div) now require one "peek" detent before editing begins. The first turn of either encoder shows the current value on the LEDs without changing it; a second turn within the 900 ms display window starts adjusting. After the window expires, the next turn is another peek. This makes it easy to check a setting without accidentally changing it.
Clear and init defaults: 0V / gates off
Cleared CV channels now default to 0V (bottom of the window at default transpose) instead of 2.5V. Gate and Trigger channels are already initialized to off; this remains unchanged. Applies to both partial clear (page button in Clear Mode) and full reset (Shift + page button).
Build files
| File | Contents |
|---|---|
catalyst-v1.5.1-catseq-catcon.wav |
Catalyst Sequencer + Catalyst Controller |
catalyst-v1.5.1-catseq-voltseq.wav |
Catalyst Sequencer + Catalyst VoltSeq |