Swapping Firmwares
If you own a Shroud Of Turing, Slight of Hand, Seventh Summoner, or Arp of Darkness you can easily swap firmware with our web firmware up-loader essentially giving you three modules in one. And that's a good thing, because there are more free firmware in the works right now for you to explore soon!
'Slight Of Hand'
V1.5.4 Updated: 01/24/2026
This is a firmware upload for the arduino-based module Slight Of Hand.
Fixes & Enhancements
- The portamento control has been optimized to feel more musical with 70% of the potentiometer dedicated to the faster portamento speeds and 30% of the knob dedicated to ultra slow experimental speeds. It's a feel thing.
- Fixed a bug that could lead in rare occasions to the module calibration de-calibrating
- This patch primarily is a code optimization to allow the firmware to run more efficiently as well as to simplify development for open source developers wishing to modify the code.
- Slight Of Hand GitHub Repository
- This firmware can be installed on any module that is a part of the Nocturne Alchemy Platrorm.
- Firmware v1.5.4 User Manual (With Firmware Flashing Instructions)
V1.5.3 Updated: 08/10/2024 This is a firmware upload for the arduino-based module Slight Of Hand.
- This patch optimizes EEPROM usage by detecting and converting the existing calibration data from float to integer. This opens up more space in the EEPROM for upcoming firmwares to use for data storage.
- This patch also officially releases the firmware as an open source starter template for those who wish to develop their own firmware for the Nocturne Alchemy Platform. Documentation and code available here: Slight Of Hand GitHub Repository
- This firmware can be installed on any module that is a part of the Nocturne Alchemy Platrorm.
- Firmware v1.5.3 User Manual (With Firmware Flashing Instructions)
V1.5.2 Updated: 06/10/2024
- This patch changes the calibration entry procedure to match other Nocturne Alchemy modules, enforcing a standard across the platform to enhance user experience.
'Arp Of Darkness'
V1.4.0 Updated: 05/29/2026 This is the latest firmware upload for the arduino-based Arp Of Darkness.
Features
- Remix Buffer - Randomly shuffles the note order in the buffer on the next clock. Note values are preserved — only the playback order changes.
- Auto-Remix Modes- Automatically reshuffles the buffer every 2, 4, or 8 loops.
- Slight Of Hand Mode - Allows the user to boot into a CV Keyboard mode that functions like the Slight Of Hand module by simply holding the Shift/High C button during power on and boot.
Fixes & Enhancements
- Fixed bug that ripped a small hole in the time-space continuum that may or may not end everything in existence as we know it... again. (Oops?)
- Firmware 1.4.0 User Manual (With Firmware Flashing Instructions)
V1.3.2 Updated: 02/25/2025
Features
- Save sequence: Allows the user to save the current sequence buffer to EEPROM
- Load saved sequence: Allows the user to immediately load the saved sequence and begin playback
- Cued loading of sequence: - Allows the user to cue the sequence to load and playback on the first note of the next loop
- Clear: Allow the user to clear the current sequence buffer
- Boot to sequence: By default, the Arp Of Darkenss now loads in the saved sequence on startup
Fixes & Enhancements
- Fixed bug with Octave down long-press to shift playback modes not suppressing the octave shift causing accidental octave down shifting.
- Firmware 1.3.2 User Manual (With Firmware Flashing Instructions)
V1.3.1 Updated: 09/09/2024
New Features
- Golden Ratio Playback Mode - Introduces a unique, evolving sequence based on the Golden Ratio (φ) and creates patterns that are both structured and unpredictable
- Direct Playback Mode Selection (Immediate)- Directly change playback mode (Immediately) activated by long-pressing Octave Down + mode selection key
- Direct Playback Mode Selection (Queued) - Schedule mode changes for the next sequence cycle activated by long-pressing Octave Up + mode selection key
- Immediate reset: Instantly jump to the first note (Octave Down + High C)
- Queued reset: Reset on the next incoming gate (Octave Up + High C)
Fixes & Enhancements
- Improved timing and responsiveness for all playback modes
- Enhanced stability and resource management
- Fixed bug that cold pre-fill buffer on some devices
- Optimized long-press actions for more intuitive control
- Firmware 1.3.1 User Manual (With Firmware Flashing Instructions)
V1.3.0 Updated: 08/10/2024
- This patch optimizes EEPROM usage by detecting and converting the existing calibration data from float to integer. This opens up more space in the EEPROM for upcoming firmwares to use for data storage.
- This patch also addresses the "hesitation" that some users experienced when simultaniously pressing the octave up and octave down buttons in order to cycle through playback modes. Now the user simply taps the octave up and octave down buttons at the same time, and the playback mode will cycle to the next mode on completion of the current buffer, creating a more predictable user experience.
- This firmware can be installed on any module that is a part of the Nocturne Alchemy Platrorm.
V1.1.0 Updated: 07/15/2024
- This patch addresses an issue that some users encountered when clocking the Arp Of Darkness at lower BPM with a longer gate. This combination could cause clock & timing inconsistencies, clock-swing, and in some rare cases unexpected, inter-dimensional, time travel. (Sorry James! Glad you got home safely!)
'Seventh Summoner'
V1.1.0 Updated: 09/07/2025 This is the latest firmware upload for the arduino-based Seventh Summoner.
Features
- New "Slight Of Hand" mode - Allows the user to boot into a CV Keyboard mode that functions like the Slight Of Hand module by simply holding the Shift/High C button during power on and boot.
Fixes & Enhancements
- Fixed a critical bug where in rare occurances calibration data could be corrupted and zeroed out due to EEPROM protected address being overwritten resulting in user having to recalibrate the module
- Firmware 1.1.0 User Manual (With Firmware Flashing Instructions)
- V1.0.0 Updated: 12/29/2024
- This is a the first public firmware for the Seventh Summoner.
Features
- Four octaves of control from C0 to C4
- Six 32-note sequences
- 16-step Summoner Sequence to chain and manipulate the six normal sequences
- Five playback modes (Forward, Backward, Pingpong, Golden Ratio and Random) with direct select, (queued & immediate) and reset
- EEPROM Storage for saving of all sequence data
- Clock input and CV out calibrated to 1V/0
- Calibration mode with tuning for each note across 4 octaves (Comes pre-calibrated)
'Shroud Of Turing'
V1.2.7 Updated: 07/06/2026 This is the latest firmware upload for the arduino-based Shroud Of Turing
Features
- 5 machine-state save/load slots mapped to black keys (C#/D#/F#/G#/A#)
- Slew/Portamento control
- Voltage Range Window Shift
- Single note removal from scale function
Fixes & Enhancements
- The rotate forward and rotate backward functions have been optimized to function more how the user expects with the post-quantized values being used for the rotation instead of shift register values.
- Fix a bug that in some cases could cause the reset to trigger double notes on the first note of the reset
- Firmware 1.2.7 User Manual (With Firmware Flashing Instructions)
V1.2.0 Updated: 02/25/2026 This is the first firmware upload for the arduino-based Shroud Of Turing
Features
- The Shroud of Turing is a 16-bit performance-focused shift register sequencer with musical quantization, inspired by the Turing Machine. It generates pseudo-random CV sequences that can lock into repeating patterns or evolve over time. What sets it apart is the ability to quantize output to custom scales built from the included keyboard, with six memory slots for saving and recalling your favorite scales in real-time.