IO Labs — Flux Sequencer
Flux Open Beta V1.07 User Manual (PDF)
FLUX Eurorack Sequencer Cheat Sheet
A quick-reference guide for using the IOLabs FLUX Temporal Modulation Synthesis® Eurorack module.
Overview
FLUX: A four-channel, 16-step rhythm and CV sequencer featuring novel "Temporal Modulation Synthesis" (TMS) for advanced polyrhythm and timing, per-step parameter locking, internal modulation, and full MIDI and CV support.
Power Consumption
- +12V: 160mA
- -12V: 50mA
- 5V: Not used
Connections
Outputs (0–8V for CV outs)
| Jack |
Function |
Range/Notes |
| 1 |
CH1 Main Rhythm Out (gate/trigger) |
0–5V or 0–8V (typical trigger/gate) |
| 2 |
CH1 Aux 1 Rhythm Out |
0–5V or 0–8V |
| 3 |
CH1 Aux 2 Rhythm Out |
0–5V or 0–8V |
| 4 |
CH1 CV Out |
0–8V |
| 5 |
CH2 Main Rhythm Out |
|
| 6 |
CH2 Aux 1 Rhythm Out |
|
| 7 |
CH2 Aux 2 Rhythm Out |
|
| 8 |
CH2 CV Out |
0–8V |
| 9 |
CH3 Main Rhythm Out |
|
| 10 |
CH3 Aux 1 Rhythm Out |
|
| 11 |
CH3 Aux 2 Rhythm Out |
|
| 12 |
CH3 CV Out |
0–8V |
| 13 |
CH4 Main Rhythm Out |
|
| 14 |
CH4 Aux 1 Rhythm Out |
|
| 15 |
CH4 Aux 2 Rhythm Out |
|
| 16 |
CH4 CV Out |
0–8V |
Inputs
| Jack |
Function |
Range/Notes |
| 17 |
External Clock |
0–8V logic-level pulses |
| 18 |
Reset |
0–8V trigger/gate |
| 19 |
Start/Stop |
0–8V logic |
| 20 |
Mute All Rhythm Outs |
0–8V logic |
| 21 |
CV In A |
0–8V |
| 22 |
CV In B |
0–8V |
| 23 |
CV In C |
0–8V |
| 24 |
CV In D |
0–8V |
Panel Elements
Pots & Encoders
| No. |
Name |
Function |
Notes |
| 25 |
Macro Pot 1 |
Manual modulation source |
Assignable to parameters |
| 26 |
Macro Pot 2 |
|
|
| 27 |
Macro Pot 3 |
|
|
| 28 |
Macro Pot 4 |
|
|
| 29 |
Navigation Encoder |
Selects parameters/pages (push = channel -) |
|
| 30 |
Param Encoder |
Changes parameter value (push = channel +) |
|
Buttons
| No. |
Button |
Function |
| 31 |
Coarse Nav/Param (*) |
Coarse (xN) navigation or parameter change |
| 32 |
Edit All (ALL) |
Edit all steps at once |
| 33 |
Micro SD |
Micro SD menu (load/save/rename presets) |
| 34 |
Step Select << |
Previous step |
| 35 |
Step Select >> |
Next step |
| 36 |
Step On/Off |
Toggle step on/off |
| 37 |
MOD |
Enter modulation pages (Evolve LFO, Macro Pots, CV Inputs) |
| 38 |
Start/Stop |
Start or Stop sequencer |
Quick Parameter Guide
Rhythm Parameters (Per Step, Channel)
- PROB: Probability % (step or per-trigger)
- LOOP: Sequence loop range (start > end)
- MOD: Select modulation bus (Yellow/Grey/Purple)
- GATE: Gate length (% of step/trigger time)
- DENS: Trigger density (# per step)
- CURV: Temporal curve type
- VAL: Temporal curve value (log/lin/exp)
- DIFF: Curve division parameter
- COMP: Compression/expansion of triggers
- PHAS: Phase shift (in degrees)
- LENG: Step length (in 16ths)
- HUMA: Humanize (1–127, subtle/extreme)
- MASK: Logical mute mask (e.g. 1in2, 2in3)
- MSK>: Mask shift (starting trigger)
- AUX1/AUX2: Select auxiliary output mode (see below)
CV Output Parameters (Per Step, Channel)
- CVSEL: LFO, Envelope, Voltage, Random
- S+H: Sample & Hold (per step/trigger)
- MINV/MAXV: Min/Max CV output (0–8V)
- ATK/REL: Attack/Release (Envelope modes, ms?)
- CURV: Attack/Release curve shape
- FREQ: LFO frequency (Hz or divisions)
- SYNC: LFO/envelope retrigger mode (step/trig)
- QUAN: # of quantization nodes per V/oct (1–24)
- QUAN NODES: Enable/disable individual quant steps
Aux Output Modes (Per Step, Per Out)
- OFF: No out
- ON: High while running
- START/SOS/1st/Last: Trig at start-of-sequence/step/first/last
- DEL1–8: Delayed main rhythm out, 1–8 steps/gates
- TL1–16: Clock divider by N
- &, !&, ||, !||, x|| (AND/OR logic): Real-time logic on main/AUX outs
- CV>1–7V / CV<1–7V: Out high if CV above/below threshold
- PPQ 1–48: Clock generator, pulses-per-quarter
- /1–16: Master divider
Modulation Buses
- Yellow, Grey, Purple: Assignable per step for selective modulation routing (manual pots, CV, evolve-LFO modulation)
Workflow—Basic Steps
- Install & Power: Mount, use correct ribbon orientation (red stripe = -12V).
- Select Channel/Step: Use encoders (push left = previous, right = next channel; >>/<< for steps).
- Set Parameters: On main UI, use left encoder to select, right to change.
- Edit All Steps: Press ALL, edit applies to all steps.
- Setup Modulation: Press MOD for modulation pages (Evolve LFOs, Macro Pots, CV Ins). Assign depths/destinations.
- Sequence/Loop: Adjust LOOP/step count, per-step densities, and TMS (CURV/VAL) for unique grooves.
- Aux Logic Outs: Assign per-step utility clocks, logic/gates, delay, dividers.
- CV Outs: Set mode and range for envelopes, LFOs, or stepped voltages—use quantization for pitch output.
- Presets: Press Micro SD to Save/Load. Name up to 8 characters.
- Start/Stop: Use button or external input/MIDI (configure clock mode in CONFIG).
MIDI
- Full clock, note & control support (see iolabs.co.uk/downloads for MIDI guide)
Display
- IPS. Mount flat for best viewing.
- Blinking * = coarse mode; ALL = all-steps editing.
Tips & Pitfalls
- No Triggers? Check PHAS, COMP, DENS, MASK, and MOD bus assignment.
- Dropped Triggers: Lower DENS if slave devices can't keep up.
- External Sync: Prefer EXTS clock mode for best DAW/clock integration.
- CV Outs: 0–8V range, quantize as needed.
- Preset Auto-load: Last loaded/saved preset loads on next power-up.
Reference Links
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