Arduino MIDI Poly Synth - MiniSy (Musical Instrument)

3 Oscillators Polyphonic Synth with MIDI using the Arduino Nano.

Dec 9, 2020

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Components and supplies

Resistor 10k ohm

4N25 OPTOCOUPLER

Arduino Nano R3

1N4148 – General Purpose Fast Switching

DIN Audio / Video Connector, 5 Contacts

Resistor 221 ohm

Breadboard (generic)

Resistor 1k ohm

Resistor 2.21k ohm

Apps and platforms

Arduino IDE

Project description

Code

SYMPLE 3 OSC POLYSYNTH WITH MIDI

c_cpp

To be uploaded to Arduino, using the IDE.

1/*********************************************************************************************
2    JCR SYMPLE 3 OSC POLYSYNTH WITH MIDI - REV.1 - By Julio Cesar - CesarSound Dec/2020
3      NOTE   23    1  B0 Note On      NOTE   23    1  B0 Note Off
4     NOTE   108    1  C8 Note On      NOTE   108   1  C8 Note Off
5     -----------------------------------------------------------
6    NOTES:
7   -Connect to MIDI OUT of your MIDI controller via 5 pin DIN MIDI   connector (not USB MIDI).
8   -For Arduino Uno / Nano / Pro Mini - See Schematics   for wiring details.
9   -The number of tones that can be generated at the same   time is limited by the number of
10   hardware timers available on the hardware   (e.g. ATmega328 has 3 available timers, and the
11   ATmega1280 has 6 timers).
12**********************************************************************************************/
13#include   <MIDI.h>  //MIDI I/Os for Arduino https://github.com/FortySevenEffects/arduino_midi_library
14#include   <Tone.h>  //Bhagman Tone Library https://github.com/bhagman/Tone
15
16byte i =   0, j = 1, k = 1;
17
18static const uint16_t note[89] = {   //MIDI NOTES TO FREQUENCY   ARRAY
19  NOTE_B0, NOTE_C1, NOTE_CS1, NOTE_D1, NOTE_DS1, NOTE_E1, NOTE_F1, NOTE_FS1,
20   NOTE_G1, NOTE_GS1, NOTE_A1, NOTE_AS1, NOTE_B1, NOTE_C2, NOTE_CS2, NOTE_D2,
21   NOTE_DS2, NOTE_E2, NOTE_F2, NOTE_FS2, NOTE_G2, NOTE_GS2, NOTE_A2, NOTE_AS2,
22   NOTE_B2, NOTE_C3, NOTE_CS3, NOTE_D3, NOTE_DS3, NOTE_E3, NOTE_F3, NOTE_FS3,
23   NOTE_G3, NOTE_GS3, NOTE_A3, NOTE_AS3, NOTE_B3, NOTE_C4, NOTE_CS4, NOTE_D4,
24   NOTE_DS4, NOTE_E4, NOTE_F4, NOTE_FS4, NOTE_G4, NOTE_GS4, NOTE_A4, NOTE_AS4,
25   NOTE_B4, NOTE_C5, NOTE_CS5, NOTE_D5, NOTE_DS5, NOTE_E5, NOTE_F5, NOTE_FS5,
26   NOTE_G5, NOTE_GS5, NOTE_A5, NOTE_AS5, NOTE_B5, NOTE_C6, NOTE_CS6, NOTE_D6,
27   NOTE_DS6, NOTE_E6, NOTE_F6, NOTE_FS6, NOTE_G6, NOTE_GS6, NOTE_A6, NOTE_AS6,
28   NOTE_B6, NOTE_C7, NOTE_CS7, NOTE_D7, NOTE_DS7, NOTE_E7, NOTE_F7, NOTE_FS7,
29   NOTE_G7, NOTE_GS7, NOTE_A7, NOTE_AS7, NOTE_B7, NOTE_C8, NOTE_CS8, NOTE_D8, NOTE_DS8,
30};
31
32MIDI_CREATE_DEFAULT_INSTANCE();
33
34Tone   notePlayer[3];   //[3] = 3 OSC (MAX)
35
36void setup(void) {
37
38  MIDI.begin(MIDI_CHANNEL_OMNI);
39   
40  notePlayer[0].begin(3);    //OSC 1 - OSC 1 OUTPUT PIN 3
41  notePlayer[1].begin(5);     //OSC 2 - OSC 2 OUTPUT PIN 5
42  notePlayer[2].begin(11);   //OSC 3 - OSC 3   OUTPUT PIN 11
43
44  MIDI.setHandleNoteOn(MyHandleNoteOn);
45  MIDI.setHandleNoteOff(MyHandleNoteOff);
46}
47
48void   loop(void) {
49  MIDI.read();
50}
51
52void MyHandleNoteOn(byte channel, byte   pitch, byte velocity) {
53  i = pitch - 23;
54
55  j = j + 1;
56  if (j > 3)   j = 1;
57
58  switch (j) {
59    case 1:
60      notePlayer[0].play(note[i]);
61       break;
62    case 2:
63      notePlayer[1].play(note[i]);
64      break;
65     case 3:
66      notePlayer[2].play(note[i]);
67      break;
68  }
69}
70
71void   MyHandleNoteOff(byte channel, byte pitch, byte velocity) {
72
73  k = k + 1;
74   if (k > 3) k = 1;
75
76  switch (k) {
77    case 1:
78      notePlayer[0].stop();
79       break;
80    case 2:
81      notePlayer[1].stop();
82      break;
83    case   3:
84      notePlayer[2].stop();
85      break;
86  }
87}

/*********************************************************************************************
    JCR SYMPLE 3 OSC POLYSYNTH WITH MIDI - REV.1 - By Julio Cesar - CesarSound Dec/2020
      NOTE   23    1  B0 Note On      NOTE   23    1  B0 Note Off
     NOTE   108    1  C8 Note On      NOTE   108   1  C8 Note Off
     -----------------------------------------------------------
    NOTES:
   -Connect to MIDI OUT of your MIDI controller via 5 pin DIN MIDI   connector (not USB MIDI).
   -For Arduino Uno / Nano / Pro Mini - See Schematics   for wiring details.
   -The number of tones that can be generated at the same   time is limited by the number of
   hardware timers available on the hardware   (e.g. ATmega328 has 3 available timers, and the
   ATmega1280 has 6 timers).
**********************************************************************************************/
#include   <MIDI.h>  //MIDI I/Os for Arduino https://github.com/FortySevenEffects/arduino_midi_library
#include   <Tone.h>  //Bhagman Tone Library https://github.com/bhagman/Tone

byte i =   0, j = 1, k = 1;

static const uint16_t note[89] = {   //MIDI NOTES TO FREQUENCY   ARRAY
  NOTE_B0, NOTE_C1, NOTE_CS1, NOTE_D1, NOTE_DS1, NOTE_E1, NOTE_F1, NOTE_FS1,
   NOTE_G1, NOTE_GS1, NOTE_A1, NOTE_AS1, NOTE_B1, NOTE_C2, NOTE_CS2, NOTE_D2,
   NOTE_DS2, NOTE_E2, NOTE_F2, NOTE_FS2, NOTE_G2, NOTE_GS2, NOTE_A2, NOTE_AS2,
   NOTE_B2, NOTE_C3, NOTE_CS3, NOTE_D3, NOTE_DS3, NOTE_E3, NOTE_F3, NOTE_FS3,
   NOTE_G3, NOTE_GS3, NOTE_A3, NOTE_AS3, NOTE_B3, NOTE_C4, NOTE_CS4, NOTE_D4,
   NOTE_DS4, NOTE_E4, NOTE_F4, NOTE_FS4, NOTE_G4, NOTE_GS4, NOTE_A4, NOTE_AS4,
   NOTE_B4, NOTE_C5, NOTE_CS5, NOTE_D5, NOTE_DS5, NOTE_E5, NOTE_F5, NOTE_FS5,
   NOTE_G5, NOTE_GS5, NOTE_A5, NOTE_AS5, NOTE_B5, NOTE_C6, NOTE_CS6, NOTE_D6,
   NOTE_DS6, NOTE_E6, NOTE_F6, NOTE_FS6, NOTE_G6, NOTE_GS6, NOTE_A6, NOTE_AS6,
   NOTE_B6, NOTE_C7, NOTE_CS7, NOTE_D7, NOTE_DS7, NOTE_E7, NOTE_F7, NOTE_FS7,
   NOTE_G7, NOTE_GS7, NOTE_A7, NOTE_AS7, NOTE_B7, NOTE_C8, NOTE_CS8, NOTE_D8, NOTE_DS8,
};

MIDI_CREATE_DEFAULT_INSTANCE();

Tone   notePlayer[3];   //[3] = 3 OSC (MAX)

void setup(void) {

  MIDI.begin(MIDI_CHANNEL_OMNI);
   
  notePlayer[0].begin(3);    //OSC 1 - OSC 1 OUTPUT PIN 3
  notePlayer[1].begin(5);     //OSC 2 - OSC 2 OUTPUT PIN 5
  notePlayer[2].begin(11);   //OSC 3 - OSC 3   OUTPUT PIN 11

  MIDI.setHandleNoteOn(MyHandleNoteOn);
  MIDI.setHandleNoteOff(MyHandleNoteOff);
}

void   loop(void) {
  MIDI.read();
}

void MyHandleNoteOn(byte channel, byte   pitch, byte velocity) {
  i = pitch - 23;

  j = j + 1;
  if (j > 3)   j = 1;

  switch (j) {
    case 1:
      notePlayer[0].play(note[i]);
       break;
    case 2:
      notePlayer[1].play(note[i]);
      break;
     case 3:
      notePlayer[2].play(note[i]);
      break;
  }
}

void   MyHandleNoteOff(byte channel, byte pitch, byte velocity) {

  k = k + 1;
   if (k > 3) k = 1;

  switch (k) {
    case 1:
      notePlayer[0].stop();
       break;
    case 2:
      notePlayer[1].stop();
      break;
    case   3:
      notePlayer[2].stop();
      break;
  }
}

SYMPLE 3 OSC POLYSYNTH WITH MIDI

c_cpp

To be uploaded to Arduino, using the IDE.

1/*********************************************************************************************
2   JCR SYMPLE 3 OSC POLYSYNTH WITH MIDI - REV.1 - By Julio Cesar - CesarSound Dec/2020
3     NOTE   23    1  B0 Note On      NOTE   23    1  B0 Note Off
4     NOTE   108   1  C8 Note On      NOTE   108   1  C8 Note Off
5     -----------------------------------------------------------
6   NOTES:
7   -Connect to MIDI OUT of your MIDI controller via 5 pin DIN MIDI  connector (not USB MIDI).
8   -For Arduino Uno / Nano / Pro Mini - See Schematics  for wiring details.
9   -The number of tones that can be generated at the same  time is limited by the number of
10   hardware timers available on the hardware  (e.g. ATmega328 has 3 available timers, and the
11   ATmega1280 has 6 timers).
12**********************************************************************************************/
13#include  <MIDI.h>  //MIDI I/Os for Arduino https://github.com/FortySevenEffects/arduino_midi_library
14#include  <Tone.h>  //Bhagman Tone Library https://github.com/bhagman/Tone
15
16byte i =  0, j = 1, k = 1;
17
18static const uint16_t note[89] = {   //MIDI NOTES TO FREQUENCY  ARRAY
19  NOTE_B0, NOTE_C1, NOTE_CS1, NOTE_D1, NOTE_DS1, NOTE_E1, NOTE_F1, NOTE_FS1,
20  NOTE_G1, NOTE_GS1, NOTE_A1, NOTE_AS1, NOTE_B1, NOTE_C2, NOTE_CS2, NOTE_D2,
21  NOTE_DS2, NOTE_E2, NOTE_F2, NOTE_FS2, NOTE_G2, NOTE_GS2, NOTE_A2, NOTE_AS2,
22  NOTE_B2, NOTE_C3, NOTE_CS3, NOTE_D3, NOTE_DS3, NOTE_E3, NOTE_F3, NOTE_FS3,
23  NOTE_G3, NOTE_GS3, NOTE_A3, NOTE_AS3, NOTE_B3, NOTE_C4, NOTE_CS4, NOTE_D4,
24  NOTE_DS4, NOTE_E4, NOTE_F4, NOTE_FS4, NOTE_G4, NOTE_GS4, NOTE_A4, NOTE_AS4,
25  NOTE_B4, NOTE_C5, NOTE_CS5, NOTE_D5, NOTE_DS5, NOTE_E5, NOTE_F5, NOTE_FS5,
26  NOTE_G5, NOTE_GS5, NOTE_A5, NOTE_AS5, NOTE_B5, NOTE_C6, NOTE_CS6, NOTE_D6,
27  NOTE_DS6, NOTE_E6, NOTE_F6, NOTE_FS6, NOTE_G6, NOTE_GS6, NOTE_A6, NOTE_AS6,
28  NOTE_B6, NOTE_C7, NOTE_CS7, NOTE_D7, NOTE_DS7, NOTE_E7, NOTE_F7, NOTE_FS7,
29  NOTE_G7, NOTE_GS7, NOTE_A7, NOTE_AS7, NOTE_B7, NOTE_C8, NOTE_CS8, NOTE_D8, NOTE_DS8,
30};
31
32MIDI_CREATE_DEFAULT_INSTANCE();
33
34Tone  notePlayer[3];   //[3] = 3 OSC (MAX)
35
36void setup(void) {
37
38  MIDI.begin(MIDI_CHANNEL_OMNI);
39  
40  notePlayer[0].begin(3);    //OSC 1 - OSC 1 OUTPUT PIN 3
41  notePlayer[1].begin(5);    //OSC 2 - OSC 2 OUTPUT PIN 5
42  notePlayer[2].begin(11);   //OSC 3 - OSC 3  OUTPUT PIN 11
43
44  MIDI.setHandleNoteOn(MyHandleNoteOn);
45  MIDI.setHandleNoteOff(MyHandleNoteOff);
46}
47
48void  loop(void) {
49  MIDI.read();
50}
51
52void MyHandleNoteOn(byte channel, byte  pitch, byte velocity) {
53  i = pitch - 23;
54
55  j = j + 1;
56  if (j > 3)  j = 1;
57
58  switch (j) {
59    case 1:
60      notePlayer[0].play(note[i]);
61      break;
62    case 2:
63      notePlayer[1].play(note[i]);
64      break;
65    case 3:
66      notePlayer[2].play(note[i]);
67      break;
68  }
69}
70
71void  MyHandleNoteOff(byte channel, byte pitch, byte velocity) {
72
73  k = k + 1;
74  if (k > 3) k = 1;
75
76  switch (k) {
77    case 1:
78      notePlayer[0].stop();
79      break;
80    case 2:
81      notePlayer[1].stop();
82      break;
83    case  3:
84      notePlayer[2].stop();
85      break;
86  }
87}

/*********************************************************************************************
   JCR SYMPLE 3 OSC POLYSYNTH WITH MIDI - REV.1 - By Julio Cesar - CesarSound Dec/2020
     NOTE   23    1  B0 Note On      NOTE   23    1  B0 Note Off
     NOTE   108   1  C8 Note On      NOTE   108   1  C8 Note Off
     -----------------------------------------------------------
   NOTES:
   -Connect to MIDI OUT of your MIDI controller via 5 pin DIN MIDI  connector (not USB MIDI).
   -For Arduino Uno / Nano / Pro Mini - See Schematics  for wiring details.
   -The number of tones that can be generated at the same  time is limited by the number of
   hardware timers available on the hardware  (e.g. ATmega328 has 3 available timers, and the
   ATmega1280 has 6 timers).
**********************************************************************************************/
#include  <MIDI.h>  //MIDI I/Os for Arduino https://github.com/FortySevenEffects/arduino_midi_library
#include  <Tone.h>  //Bhagman Tone Library https://github.com/bhagman/Tone

byte i =  0, j = 1, k = 1;

static const uint16_t note[89] = {   //MIDI NOTES TO FREQUENCY  ARRAY
  NOTE_B0, NOTE_C1, NOTE_CS1, NOTE_D1, NOTE_DS1, NOTE_E1, NOTE_F1, NOTE_FS1,
  NOTE_G1, NOTE_GS1, NOTE_A1, NOTE_AS1, NOTE_B1, NOTE_C2, NOTE_CS2, NOTE_D2,
  NOTE_DS2, NOTE_E2, NOTE_F2, NOTE_FS2, NOTE_G2, NOTE_GS2, NOTE_A2, NOTE_AS2,
  NOTE_B2, NOTE_C3, NOTE_CS3, NOTE_D3, NOTE_DS3, NOTE_E3, NOTE_F3, NOTE_FS3,
  NOTE_G3, NOTE_GS3, NOTE_A3, NOTE_AS3, NOTE_B3, NOTE_C4, NOTE_CS4, NOTE_D4,
  NOTE_DS4, NOTE_E4, NOTE_F4, NOTE_FS4, NOTE_G4, NOTE_GS4, NOTE_A4, NOTE_AS4,
  NOTE_B4, NOTE_C5, NOTE_CS5, NOTE_D5, NOTE_DS5, NOTE_E5, NOTE_F5, NOTE_FS5,
  NOTE_G5, NOTE_GS5, NOTE_A5, NOTE_AS5, NOTE_B5, NOTE_C6, NOTE_CS6, NOTE_D6,
  NOTE_DS6, NOTE_E6, NOTE_F6, NOTE_FS6, NOTE_G6, NOTE_GS6, NOTE_A6, NOTE_AS6,
  NOTE_B6, NOTE_C7, NOTE_CS7, NOTE_D7, NOTE_DS7, NOTE_E7, NOTE_F7, NOTE_FS7,
  NOTE_G7, NOTE_GS7, NOTE_A7, NOTE_AS7, NOTE_B7, NOTE_C8, NOTE_CS8, NOTE_D8, NOTE_DS8,
};

MIDI_CREATE_DEFAULT_INSTANCE();

Tone  notePlayer[3];   //[3] = 3 OSC (MAX)

void setup(void) {

  MIDI.begin(MIDI_CHANNEL_OMNI);
  
  notePlayer[0].begin(3);    //OSC 1 - OSC 1 OUTPUT PIN 3
  notePlayer[1].begin(5);    //OSC 2 - OSC 2 OUTPUT PIN 5
  notePlayer[2].begin(11);   //OSC 3 - OSC 3  OUTPUT PIN 11

  MIDI.setHandleNoteOn(MyHandleNoteOn);
  MIDI.setHandleNoteOff(MyHandleNoteOff);
}

void  loop(void) {
  MIDI.read();
}

void MyHandleNoteOn(byte channel, byte  pitch, byte velocity) {
  i = pitch - 23;

  j = j + 1;
  if (j > 3)  j = 1;

  switch (j) {
    case 1:
      notePlayer[0].play(note[i]);
      break;
    case 2:
      notePlayer[1].play(note[i]);
      break;
    case 3:
      notePlayer[2].play(note[i]);
      break;
  }
}

void  MyHandleNoteOff(byte channel, byte pitch, byte velocity) {

  k = k + 1;
  if (k > 3) k = 1;

  switch (k) {
    case 1:
      notePlayer[0].stop();
      break;
    case 2:
      notePlayer[1].stop();
      break;
    case  3:
      notePlayer[2].stop();
      break;
  }
}

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