Project Update

I have had success with an objective of using the steel strings of my electric guitar to feed in MIDI to the DAW over USB.  Furthermore, with class-compliant MIDI, it means it should work on Apple

I do not actually own any Apples to test it on, but I hear that if it works on Apple -- it is a benefit to any resulting end product's communicability.

Video Demonstration

Please feel free to watch this brief video overview.  There are still tweaks to be made to the software, and a housing to be added.  I have all the parts and most of the code ready for the next post.  I will also do some micro posts along the way in the next few days as general updates (for what otherwise would be regarded as full content posts).

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Design Challenge Project Summary: PlectralEffects *Final Update* PlectralEFFECTS - Class compliant driverless MIDI

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LeoStick (ATmega32U4) Code

The code running on the LeoStick below, I used Arduino IDE 1.6.7  :

// PlectralEFFECTS

// Include the Bounce2 library found here :
// https://github.com/thomasfredericks/Bounce2
#include <Bounce2.h>

#define BUTTON_PIN_1 0
#define BUTTON_PIN_2 1


#define LED_PIN 13

// Instantiate a Bounce object
Bounce debouncer1 = Bounce(); 
Bounce debouncer2 = Bounce(); 


void noteOn(byte channel, byte pitch, byte velocity) {
  MIDIEvent noteOn = {0x09, 0x90 | channel, pitch, velocity};
  MIDIUSB.write(noteOn);
}

void noteOff(byte channel, byte pitch, byte velocity) {
  MIDIEvent noteOff = {0x08, 0x80 | channel, pitch, velocity};
  MIDIUSB.write(noteOff);
}


void controlChange(byte channel, byte control, byte value) {
  MIDIEvent event = {0x0B, 0xB0 | channel, control, value};
  MIDIUSB.write(event);
}

bool value1state=false;
bool value2state=false;

void loop() {
  debouncer1.update();
  debouncer2.update();

  int value1 = debouncer1.read();
  int value2 = debouncer2.read();

  // Turn on the LED if either button is pressed :
  if ( value1 == LOW ) {
    digitalWrite(LED_PIN, HIGH );
    if (!value1state)
    {
    noteOn(0, 48, 64);   // Channel 0, middle C, normal velocity
    MIDIUSB.flush();
    value1state=true;
    }
  } 
  else {
    digitalWrite(LED_PIN, LOW );
    if (value1state)
    {
    noteOff(0, 48, 64);  // Channel 0, middle C, normal velocity
    MIDIUSB.flush();
    value1state=false;
    }
  }

 if (  value2 == LOW ) {
    digitalWrite(LED_PIN, HIGH );
    if (!value2state)
    {
     noteOn(0, 50, 64);   // Channel 0, middle D, normal velocity
     MIDIUSB.flush();
     value2state=true;
    }
  } 
  else {
    digitalWrite(LED_PIN, LOW );
    if (value2state)
    {    
     noteOff(0, 50, 64);  // Channel 0, middle D, normal velocity
     MIDIUSB.flush();
     value2state=false;
    }
  }

  // controlChange(0, 10, 65); // Set the value of controller 10 on channel 0 to 65
}

void setup() {
  // Setup the first button with an internal pull-up :
  pinMode(BUTTON_PIN_1,INPUT_PULLUP);
  debouncer1.attach(BUTTON_PIN_1);
  debouncer1.interval(5); // interval in ms
  
   // Setup the second button with an internal pull-up :
  pinMode(BUTTON_PIN_2,INPUT_PULLUP);
  debouncer2.attach(BUTTON_PIN_2);
  debouncer2.interval(5); // interval in ms


  //Setup the LED :
  pinMode(LED_PIN,OUTPUT);
}