Description

KRONO is a 4HP programmable multi-mode clock and rhythm generator module featuring tap tempo,
state persistence, CV group swap and 12 independent outputs.

Features:

• 12 Clock Outputs divided into two groups (A/B)
• 10 Operational Modes covering standard, mathematical, musical, probabilistic, and chaotic rhythms.
• Weighted Tap Tempo & External Sync
• State Persistence: Saves Tempo, Active Mode, and Swap State for each mode, retaining them across power cycles.
• Calculation Swap: Inverts functions between groups via the MOD button or external gate.
• Visual Feedback: the Status LED indicates the active mode; the Auxiliary LED signals state changes (tap, mode select, swap).
• Fixed Base Clock Outputs: Outputs 1A and 1B always provide the unmodified main clock.
• Hardware Platform: Based on CPU STM32F411.
• Open Source: Firmware developed with PlatformIO (C/C++), customizable.
• Programming: Via USB-C DFU.
• “whatever” power connector – don’t mind the polarity, it’s protected eighter way.

Modes – firmware v1.0:

• 1. Ratios: Direct multiplications and divisions of the base tempo for proportional rhythmic ratios.
• 2. Euclidean: Generates Euclidean rhythms by distributing K pulses over N steps.
• 3. Musical: Applies common musical ratios (e.g., triplets, dotted notes, predefined swing divisions).
• 4. Probabilistic: Outputs trigger based on defined probability thresholds for each output.
• 5. Sequential: Generates clocks based on mathematical sequences (Fibonacci, prime numbers).
• 6. Swing: Applies individual swing/shuffle levels per output, delaying even beats.
• 7. Polyrhythm: Assigns independent X:Y ratios to outputs; output 6 can generate a logical sum.
• 8. Logic: Applies logic operations (AND, OR, XOR, NAND, XNOR) between internal clocks or external inputs (if configured).
• 9. Phasing: Generates pulses with configurable time offsets (phase shifts) relative to the main clock.
• 10. Chaos: Creates unpredictable rhythmic patterns based on chaotic algorithms.
• New modes will be added with upcoming firmware updates.

Why?:

• To copy, sync and multiply clocks with algorithmic flexibility
• To generate complex, evolving, and synchronized clock patterns via multiple outputs.
• To explore algorithmic rhythms (euclidean, chaos, polyrhythms) and musical ratios.
• To sync your system using tap tempo or external clock sources.
• To instantly save and recall the state for each operational mode.

Use with:

• Sequencers: Drive step progression with synchronized clocks and various rhythmic divisions/multiplications.
• Drum Modules / Samplers: Create dynamic, polyrhythmic, or probabilistic percussion patterns.
• Modular Effects (Delay, Chorus, etc.): Synchronize effect parameters to the master tempo.
• LFOs / Envelopes / VCAs: Trigger modulations and gates with rhythmic precision and mathematical/musical relationships.
• Logic Modules: Combine KRONO’s outputs to create even more intricate trigger sequences.

Specs:

• Width: 4HP
• Depth: 30mm
• Power Consumption: 50 mA +12V, 5 mA -12V

Krono – Build Guide | User Manual