Audio Application Framework

THE NUCLEUS SYSTEM
The NUCLEUS system is based around a 26HP eurorack module, a NUCLEUS, that can be flashed with software files to decide its functionality. Each module has a socket for a PJRC Teensy 3.5 MCU (ARM Cortex-M4@180MHz) with or without PJRC Audio Adapter. Four 3.3V gate I/O and four 0-4V CV I/O-jacks is used to interface to other modules.

PERFORMANCE CONTROLLER
Each module has four analog potentiometers, PERFORMANCE CONTROLLERS, that controls key parameters for each modul.

SOFTWARE
There are two types of software files for this system, one that requires an audio adapter and one that does not. The ones that requires an audio adapter have the name suffix .audio (se file list below)

• PHOSPORUS.audio
  4xDCO
  4xMIDI Output
  MIDI Note, Velocity and modulation output. Four voices monophonic. Eight waveforms. FM synthesis. Each voice has separate semitone adjustments, mixer and left/right output assignment. Modulation input. Pulsewidth modulation and FM input.
  Performance Controllers:
  FREQUENCY OSC 1 | FREQUENCY OSC 2 | FREQUENCY OSC 3 | FREQUENCY OSC 4
  Firmware: nucleusPhosphorusAudioV1.nuc

• HYDROGEN.audio
  2xDCF
  2xDCA
  4xChaos
  4xSamplePlayer
  Stereo or dual mono mode. Resonant state variable filters. Reverb with time and amount parameters. 4 x Chaos Designer with Low/High parameters that outputs data when triggered by gate signal.
  Performance Controllers:
  FREQUENCY FILTER 1 | FREQUENCY FILTER 2 | RESONANCE FILTER 1 | RESONANCE FILTER 2
  Firmware. nucleusHydrogenAudioV1.nuc

• TITANIUM
  4xEnvelope Generators
  Four individual ADSR Envelope Generators with fast, medium or long mode. Peak output via gate.
  Performance Controllers:
  DECAY TIME EG 1 | DECAY TIME EG 2 | DECAY TIME EG 3 | DECAY TIME EG 4
  Firmware: nucleusTitaniumV1.nuc

• XENON
  4xLFO
  Four individual Low Frequency Oscillators with fast, medium or long mode. Four waveforms including Sample&Hold. Four LFO tempo output via gate.
  Performance Controllers:
  RATE LFO 1 | RATE LFO 2 | RATE LFO 3 | RATE LFO 4
  Firmware: nucleusXenonV1.nuc

• MERCURY
  2xLFO
  2xEnvelope Generators
  2xClock
  A mix between TITANIUM and XENON with two envelope generators, two LFOs and two clocks.
  Performance Controllers:
  RATE LFO 1 | RATE LFO 2 | DECAY TIME EG 1 | DECAY TIME EG 2
  Firmware: nucleusMercuryV1.nuc

• OXYGEN
  4xMIDI Input/Output
  4xModal Sequencer
  A MIDI Interface or a sequencer that outputs four channels of different modal progressions.
  Performance Controllers:
  LENGTH SEQ 1 | LENGTH SEQ 2 | LENGTH SEQ 3 | LENGTH SEQ 4 |
  Firmware: nucleusOxygenV1.nuc

• MAGNESIUM
  4xGate/Data Sequencer
  A sequencer with four channels of eight step sequences. Doubles as a gate sequencer where a note value generates a gate signal and a NULL value sends no gate signal.
  Performance Controllers:
  LENGTH SEQ 1 | LENGTH SEQ 2 | LENGTH SEQ 3 | LENGTH SEQ 4 |
  Firmware: nucleusMagnesiumV1.nuc

TECHNICAL SPECIFICATIONS
Socket for PJRC Teensy 3.5 MCU (ARM Cortex-M4@180MHz) with or without PJRC Audio Adapter.
2-channel audio Input/Output (with PJRC audio adapter).
ILI9341 TFT 2.2"-screen with custom bezel.
Two rotary encoders for parameter and value selection.
Four 0/3.3V gate input/output (+5V maximum input).
Four 0-4V controlled voltage input/output.
5V power is supplied to each NUCLEUS via 16-pin eurorack power connector.
Four analog potentiometers that works as controllers for real-time control of key parameters.
26HP Eurorack size.

https://johanbilen.wixsite.com/nucleus

• ? mA +12V
• ? mA -12V
• 50 mA 5V
• 40 mm Depth

Available as an assembled Module and as a DIY project.

This Module is an early prototype, a concept in development, or an AI mockup