Shroud Of Turing
Nocturne Alchemy Platform - Free Swappable Firmwares
16-Bit Shift Register Sequencer with Musical Quantization & User Scale Presets
The Shroud of Turing is an Arduino-based (multiple free firmwares), generative, performance-focused, shift register sequencer inspired by the Turing Machine, reimagined with with additional tools to help you evolve your generated phrases. At its heart is a 16-bit shift register that generates evolving pseudo-random CV sequences — turn the probability knob to sweep between locked, repeating patterns and ever-changing generative melodies, or find the sweet spot in between where sequences gradually mutate over time.
What sets the Shroud of Turing apart is its built-in musical quantizer. Use the onboard keyboard to define custom scales, and the sequencer's output snaps to musically meaningful notes — no external quantizer needed. Build scales from any combination of notes, save up to six scales to memory, and recall them instantly during a performance. Leave quantization off for raw, unquantized voltage, or engage it to bring harmonic structure to generative sequences.
Once you've found a pattern you love, the Shroud gives you hands-on tools to shape it. Use pattern rotation to nudge your sequence forward or backward, shifting the starting point until it lands perfectly on the downbeat — no need to rebuild from scratch. Create variations on the fly by rotating the same pattern into new phrasings, or use it to sync melodic accents with other elements in your patch. In addition, use loop reset to snap the sequence to step one on command for tight synchronization, and even clear or set individual bits to sculpt patterns by hand.
Whether you're looking for a source of happy accidents, a tool for controlled generative composition, or a compact sequencer that speaks in scales, the Shroud of Turing bridges the gap between chaos and musicality.
This module is a part of the Nocturne Alchemy Platform - a flexible eurorack module series that shares the same robust Arduino-based hardware, allowing one to effortlessly swap firmware and functionalities through an intuitive web loader. By purchasing one module, you gain access to a full range of freely available firmwares, including the other current creations, Slight of Hand and Arp Of Darkness, as well as more planned for future release! It's like getting multiple modules for the price of just one!
Specifications:
- Height: 1U (Intellijel format)
- Width: 26HP
- Depth: 40mm ("Skiff-friendly")
- Current Draw: 40 mA +12V, 0 mA -12V, 0 mA 5V
Features:
- 16-bit shift register sequencer with analog-style probability control — fully random at noon, locked and looping at full clockwise, locked at double length fully counter-clockwise
- Built-in musical quantizer with onboard keyboard for defining custom scales in real time
- Six scale memory slots — save and recall your favorite scales on the fly
- Pattern rotation — nudge sequences forward or backward to find the perfect downbeat or create instant variations
- Variable loop length — 3, 4, 5, 6, 8, 12, or 16 steps
- Adjustable output range — 1 to 4 octave spread
- Manual bit editing — clear or set individual bits to sculpt patterns by hand
- Loop reset — reset to step one on command for tight synchronization
- Precision calibrated CV output (0–4V) with gate output
- External clock input — integrates seamlessly into any clocked patch
- Bootable 'Slight Of Hand' Mode - transforms the module into a simple CV keyboard
- NEW! Open Source Arduino Nano-based Firmware - GitHub Page
- Calibration mode with tuning for each note across 4 octaves (Comes pre-calibrated)
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