Name: Turing Matrix
draft: false
summary: Turing Machine sequencer with a switchable mixer layer inspired by the
  Music Thing Modular Turing Machine and Vactrol Mix combination
short-description: Turing Machine sequencer with a switchable mixer layer
  inspired by the Music Thing Modular Turing Machine and Vactrol Mix combination
Language: C++ (Pico SDK + ComputerCard)
Creator: Adrian Vos
Version: 0.1.0-beta
Status: Beta
License: GPL-3.0-or-later
date-created: 2026-06-26
date-updated: 2026-07-13
demo-link: https://www.youtube.com/watch?v=F59vXwbCjhs
panel:
  inputs:
    - id: PulseIn1
      name: Ext Clock 1
      description: Replaces tap tempo and drives the main Turing clock
      type: pulse
    - id: PulseIn2
      name: Ext Clock 2
      description: Independently clocks channel 2 when patched
      type: pulse
    - id: CVIn1
      name: CV Input 1
      description: Divide/multiply modulation in middle mode; mix input 1 in up mode
      type: cv
    - id: CVIn2
      name: CV Input 2
      description: Pitch offset in middle mode; mix input 2 in up mode
      type: cv
    - id: AudioIn1
      name: Audio/CV In 1
      description: Mixer input 1 in up mode; direct audio pass-through source in middle mode
      type: audio
    - id: AudioIn2
      name: Audio/CV In 2
      description: Mixer input 2 in up mode; direct audio pass-through source in middle mode
      type: audio
  outputs:
    - id: PulseOut1
      name: Matrix Gate 1
      description: Channel 1 matrix gate / pulse output in both layers
      type: pulse
    - id: PulseOut2
      name: Matrix Gate 2
      description: Channel 2 matrix gate / pulse output in both layers
      type: pulse
    - id: CVOut1
      name: |-
        Chan 1 Quant
        CV
      description: Quantized pitch CV in middle mode; crossfaded CV output 1 in up mode
      type: cv
    - id: CVOut2
      name: |-
        Chan 2 Quant
        CV
      description: Quantized pitch CV in middle mode; crossfaded CV output 2 in up mode
      type: cv
    - id: AudioOut1
      name: |-
        Audio Out 1
        Pass-through
      description: Audio pass-through in middle mode; mixed audio output 1 in up mode
      type: audio
    - id: AudioOut2
      name: |-
        Audio Out 2
        Pass-through
      description: Audio pass-through in middle mode; mixed audio output 2 in up mode
      type: audio
tags:
  - sequencer
  - turing-machine
  - random
  - clock
  - cv
  - mixer
controls:
  switch:
    up:
      name: Mixer mode
      description: "Z up: MAIN: Mixer Lag; X: Mix Depth 1; Y: Mix Depth 2. Mixer mode
        active."
    middle:
      name: Turing Mode
      description: "Z middle: MAIN: Randomness / Write; X: Loop Length; Y: Div / Mult.
        Turing mode active."
    down:
      name: Tap tempo
      description: "Z down, momentary: MAIN: Tap Tempo."
  knobs:
    - main:
        name: |-
          Random / Write
          Mixer Lag
        description: Drives the main Turing machine write behavior in middle mode and
          sets mixer lag in up mode
      x:
        name: |-
          Loop Length
          Mixer Depth 1
        description: Sets channel 1 sequence length in middle mode and mixer depth 1 in
          up mode
      y:
        name: |-
          Div / Mult
          Mixer Depth 2
        description: Sets channel 2 divide/multiply clock relationship in middle mode
          and mixer depth 2 in up mode
  leds:
    - display: list
      items:
        - id: LED0
          name: LED 1
          description: "Z middle: Channel 1 DAC Level; Channel 2 DAC Level; Channel 1
            Turing Level; Channel 2 Turing Level; Pulse 1 Activity; Pulse 2
            Activity."
        - id: LED1
          name: LED 2
          description: "Z up: Mixer position 1; Mixer position 2; Mix depth 1; Mix depth
            2; Pulse 1 Activity; Pulse 2 Activity."
host:
  notes: >-
    Dual-layer Turing-style random sequencer with a switchable mixer layer and
    tap tempo or external clocking.

    The beta card builds on ideas and code from Tom Whitwell and Chris Johnson,
    with the Workshop Computer port adapting those concepts into a two-layer
    panel workflow.

    Pulse In 1 overrides tap tempo as the main clock; Pulse In 2 can clock
    channel 2 independently.

    CV In 1 controls divide/multiply on channel 2 in middle mode and mix input 1
    in up mode. CV In 2 applies quantized pitch offset in middle mode and mix
    input 2 in up mode.

    Audio In 1 and Audio In 2 pass through in middle mode and become the mixer
    inputs in up mode.



    Web editor via MIDI SysEx: Browser editor reads and writes Turing and mixer
    settings over USB MIDI SysEx (Chrome recommended)
contact:
  social:
    github: https://github.com/soveda