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Arduino 4 Task (MIDI)

MIDI via Arduino

Physical Set-up. Note the 220 ohm resistor.

/*
MIDI
Language: Wiring/Arduino

Plays MIDI notes from 30 to 90 (F#-0 to F#-5)

*/

char note = 0;    // The MIDI note to be played

void setup()  {
    // Set MIDI baud rate
    Serial.begin(31250);
}

void loop()  {
  // play notes from  30 to 90 (F#-0 to F#-5):
  for (note = 0; note < 127; note ++)  {
    // Note on channel 1 (0x90), some note value (note), middle velocity (0x45):
    noteOn(0x90, note, 0X70);
    delay(10);
    // Note on channel 1 (0x90), some note value (note), silent velocity (0x00):
    noteOn(0x90, note, 0x00);
    delay(100);
  }
}

// Plays a MIDI note.  Doesn't check to see that
// cmd is greater than 127, or that data values are less than 127:

void noteOn(char cmd, char data1, char data2)  {
  Serial.print(cmd, BYTE);
  Serial.print(data1, BYTE);
  Serial.print(data2, BYTE);
}

Another example

/*
MIDI2
Language: Wiring/Arduino

Plays MIDI notes from 30 to 90 (F#-0 to F#-5)

*/

char note = 0;    // The MIDI note to be played
char rnote = 0;  // Random Note

void setup()  {
    // Set MIDI baud rate
    Serial.begin(31250);
}

void loop()  {
  randomSeed(analogRead(0));
  // play notes from  30 to 90 (F#-0 to F#-5):
  for (note = 0; note < 127; note ++)  {
    // Note on channel 1 (0x90), some note value (note), middle velocity (0x45):
    noteOn(0x90, note, 0X70);
    delay(200);
    // Note on channel 1 (0x90), some note value (note), silent velocity (0x00):
    noteOn(0x90, note, 0x00);
    delay(10);
    //
    // Now the random number!
    // return a random number from 50 - 300
    // randNumber = random(50,300);
    rnote = random(0,127);
    noteOn(0x90, rnote, 0X70);
    delay(100);
    noteOn(0x90, rnote, 0X00);
    delay(10);
  }
}

// Plays a MIDI note.  Doesn't check to see that
// cmd is greater than 127, or that data values are less than 127:

void noteOn(char cmd, char data1, char data2)  {
  Serial.print(cmd, BYTE);
  Serial.print(data1, BYTE);
  Serial.print(data2, BYTE);
}

Just in case, here's the latest version of the Arduino to Max Patch

To cover:

This is just a way of communicating via MIDI with another device, through the Arduino...
That
and the other. 

This also has ramifications concerning:

Life, the universe and anything...

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