Beaks Through Hole Peaks

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Revision as of 20:07, 23 December 2022 by Blwikiadmin (talk | contribs) (→‎Testing)
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Beaks P1080894-720px.jpg

Features

  • Through hole version of Mutable Instruments Peaks module
  • Acts as
    • ADSR
    • LFO
    • Tap LFO
    • Drum
    • 4 step Sequencer
    • Trigger Delay
    • Trigger Randomizer
    • Drum Synth
  • Buttons
    • (2) Manual Triggers - lighted buttons
  • Inputs
    • (2) Trigger
  • Outputs
    • 2 PWM Outputs
  • Knobs
    • Parameters - mode dependent
    • Mode controls knob function
      • Split (2 knobs each)
      • Twin
      • Expert

Credits/Resources

Original Peaks

Peaks panel front-720px.jpg

Original Peaks Features

  • A SWISS-ARMY KNIFE FOR PERCUSSIVE PATCHES
  • Peaks is a dual-channel module – making it very useful for duophonic patches or for controlling/synthesizing the kick/snare rhythmic backbone of a patch.
    • Peaks provides 4 different functions in a small 8-HP package: ADSR, LFO / Tap tempo LFO, and drum synth.
    • Their common point?
      • They are all about generating an audio or CV signal in response to a trigger, and are all focused on rhythmic works.
  • Four in one…
  • ADSR envelope generator
    • Segment durations ranging from 0.2ms to 8s.
    • Quartic attack, exponential decay, exponential release.
  • LFO and tap-tempo LFO
    • 0.03 Hz to 160 Hz.
    • 5 basic waveforms: square, triangle, sine, stepped, random.
    • Waveform variations and morphing for each of these: PWM, slope, folding/harmonics, step size, interpolation.
    • Phase at reset control.
    • Tap LFO can lock onto irregular rhythms.
  • Drum synth
    • Channel 1: 808 kick model with extra parameters (tune, punch).
    • Channel 2: 808 snare model with extra parameters (tune, decay).
    • Channel 2: A specific combination of settings transform the snare into a modelled 808 hi-hat.
  • Control modes
    • Twin: Channel 1&2 share the same parameters but can be triggered independently.
    • Split: Channel 1 is edited by knobs 1&2, channel 2 edited by knobs 3&4, with a simplified 2-parameter control scheme.
    • Expert: Channel 1&2 are completely independent.
  • Specifications
    • Inputs: 100k impedance, threshold at 0.6V.
    • 16-bit CV/audio generation with 48kHz sample rate.
    • Output level: 0 to +8V for envelopes, 10Vpp for LFOs and drum signals.

STM32 "Blue Pill"

  • "Blue Pill" Pins

STM32F103C8T6-Blue-Pill-Pin-Layout-720px.png

  • "Blue Pill" Schematic

BluePillSchematic-720px.png

Videos

Build PCB Pictures

Beaks Card Set 720px.jpg

  • Front Panel - Front view

MI Beaks Front Panel Front P1080709-720px.jpg

  • Controls Card - Front view

MI Beaks Switches P1080714-720px.jpg

  • Controls Card - Rear view

MI Beaks Controls Rear Side P1080715-720px.jpg

  • Processing Card - Front view

MI Beaks P1080712 Analog Comp Side-720px.jpg

  • Processing Card - Rear view

MI Beaks P1080712 Analog Rear Side P1080713-720px.jpg

Build Notes

Parts List Notes

Beaks Added Cap Ref Des.PNG

  • LEDs go Kathode down

Beaks LEDs Down.PNG

Build Pictures

  • Controls card with resistors

MI Beaks Controls Resistors-Added P1080720-720px.jpg

  • Analog Front side card with resistors, transistors, and caps

MI Beaks Analog Card Front Side Resistors Caps P1080746-720px.jpg

  • Analog Rear side card with resistors

MI Beaks Analog Card Rear Side Resistors Caps P1080743-720px.jpg

  • 12.5mm Shaft pots and Jacks on controls card mounted to Front Panel
    • PL calls for 15mm pots

MI Beaks Front Panel With Ctrls Jacks P1080734-720px.jpg

Beaks P1080903-720px.jpg

Checkout

  • Forgot to install U2 opamp
  • Missed solder on OUT 1 connector tip
  • Found short at Q2 from base to ground preventing TRIG2 from working

Testing

  • OUT 1 and OUT 2 to ER-MIXER5-01 inputs
  • Set mode to Drums by pressing top button (above SPLIT) silkscreen
    • Mode LEDs should cycle between modes
  • Press SPLIT pushbutton (below SPLIT silkscreen/LED)
    • SPLIT LED should light
  • Press TRIG 1 lighted pushbutton, lights when pressed and drum sound is heard
  • Press TRIG 2 lighted pushbutton, lights when pressed and drum sound is heard
  • Insert GATE signal into TRIG 1 jack
    • Should make Foot Drum sound
  • Insert GATE signal into TRIG 3 jack
    • Should make Snare Drum sound
  • All working

Software

Uploading Code to Blue Pill

  • ST Link V2
  • Before programming, set jumpers on Blue Pill module set towards center of card
  • Use STMCubeProgrammer software to program card

BluePill Jumper.png

  • After programming, set jumpers on Blue Pill module set towards USB jack