#include <Wire.h>
#include <Adafruit_MCP23X17.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_NeoPixel.h>
#include <MIDI.h>

//bank numder
//int numb=0;
//int pres=0;

// MCP23017 Instances
Adafruit_MCP23X17 mcp0;
Adafruit_MCP23X17 mcp1;

// OLED Display
#define OLED_ADDR 0x3C
Adafruit_SSD1306 display(128, 64, &Wire, -1);
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 32 // OLED display height, in pixels

// NeoPixel
#define PIN 13 // for the NeoPixel data line.
#define Neopixel 16 // for the NeoPixel data line.
Adafruit_NeoPixel strip = Adafruit_NeoPixel(Neopixel, PIN, NEO_GRB + NEO_KHZ800);

// MIDI
MIDI_CREATE_DEFAULT_INSTANCE();

void handleNoteOn(byte channel, byte pitch, byte velocity) {
  Serial.print("Note On, channel: ");
  Serial.print(channel);
  Serial.print(", pitch: ");
  Serial.print(pitch);
  Serial.print(", velocity: ");
  Serial.println(velocity);

  int pixel = pitch % Neopixel; // Map pitch to a pixel index
  strip.setPixelColor(pixel, velocity, 0, 0); // Light up pixel with a color based on velocity
  strip.show();
}

void handleNoteOff(byte channel, byte pitch, byte velocity) {
  Serial.print("Note Off, channel: ");
  Serial.print(channel);
  Serial.print(", pitch: ");
  Serial.print(pitch);
  Serial.print(", velocity: ");
  Serial.println(velocity);

  int pixel = pitch % Neopixel; // Map pitch to a pixel index
  strip.setPixelColor(pixel, 0, 0, 0); // Turn off the pixel
  strip.show();
}

void setup() {
  display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR);
  display.clearDisplay();
  display.setTextColor(WHITE);
  display.setTextSize(2);
  display.setCursor(10, 10);
  display.println("Cubase v5");
  display.display();

  Serial.begin(9600);
  Wire.begin(21, 22);

  // MCP23017
  mcp0.begin_I2C();  // Initialize MCP23017 at address A
  mcp1.begin_I2C(0x23);  // Initialize MCP23017 at address B

  // NeoPixel
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
  strip.setBrightness(20);

  // Setup input pins with pull-ups for both MCP23017 chips
  for (int i = 0; i < 16; i++) {
    mcp0.pinMode(i, INPUT_PULLUP);
    mcp1.pinMode(i, INPUT_PULLUP);
  }

  // MIDI
  MIDI.begin(MIDI_CHANNEL_OMNI);
  MIDI.setHandleNoteOn(handleNoteOn);
  MIDI.setHandleNoteOff(handleNoteOff);
}

void loop() {
  // Handle MIDI input
  MIDI.read();

  // The rest of your loop code to handle MCP23017 inputs and NeoPixel updates

  // MCP0 inputs
  if (mcp0.digitalRead(0) == LOW) {
    Serial.println("MCP0-1 UP 49"); //monitor
    strip.setPixelColor(14, 255, 0, 255);  //neopixel
     strip.show();                         //neopixel
    display.clearDisplay();               //i2c Screen
    display.setTextColor(WHITE);          //i2c Screen
    display.setTextSize(2);               //i2c Screen
    display.setCursor(10, 10);            //i2c Screen
    display.println("MCP0-1 UP MIDI 49");         //i2c Screen
    display.display();                   //i2c Screen
   MIDI.sendNoteOn(49, 127, 1);          // Send MIDI Note On (C#2, velocity 127, channel 1)
    delay(100);
  } else {
    strip.setPixelColor(14, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(49, 0, 1); // Send MIDI Note Off (C#2, velocity 0, channel 1)
  }
  ////////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(1) == LOW) {
    Serial.println("MCP0-2 Down 48");
    strip.setPixelColor(15, 255, 0, 255);
    strip.show();
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-2 Down 48");
    display.display();
    MIDI.sendNoteOn(48, 127, 1); // Send MIDI Note On (C2, velocity 127, channel 1)
    delay(200);
  } 
  else {
    strip.setPixelColor(15, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(48, 0, 1); // Send MIDI Note Off (C2, velocity 0, channel 1)
  }

  if (mcp0.digitalRead(2) == LOW) {
    Serial.println("MCP0-3 Rotary Encoder 1 B");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-3 RE1 B");
    display.display();
    MIDI.sendNoteOn(62, 127, 1); // Send MIDI Note On (D4, velocity 127, channel 1)
    delay(200);
  }
   else {
    strip.setPixelColor(13, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(62, 0, 1); // Send MIDI Note Off (D4, velocity 0, channel 1)
  }

  if (mcp0.digitalRead(3) == LOW) {
    Serial.println("MCP0-4 Rotary Encoder 1 A");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-4 RE1 A");
    display.display();
    delay(250);
  }
  if (mcp0.digitalRead(4) == LOW) {
    Serial.println("MCP0-5 Rotary Encoder 2 A ");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-5 Rotary Encoder 2 A ");
    display.display();
       MIDI.sendNoteOn(93, 127, 1); //A5 94 Send MIDI Note On (A5, velocity 127, channel 1)
    delay(200);
  } 
  else {
    strip.setPixelColor(4, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(93, 0, 1); //A5 93  Send MIDI Note Off (A5, velocity 0, channel 1)Mackie ff
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(5) == LOW) {
    Serial.println("MCP0-6 Rotary Encoder 2 B");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-6 RE2 B");
    display.display();
    delay(50);
  }
  if (mcp0.digitalRead(6) == LOW) {
    Serial.println("MCP0-7 Rotary Encoder 1 SW m44");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-7 RE1 SW EQ m44");
    display.display();
      MIDI.sendNoteOn(44, 127, 1); //G#1 44 Send MIDI Note On (G#1, velocity 127, channel 1)Mackie EQ
    delay(200);
  } 
  else {
    strip.setPixelColor(4, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(44, 0, 1); //G#1 44  Send MIDI Note Off (G#1, velocity 0, channel 1)Mackie EQ
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(7) == LOW) {
    Serial.println("MCP0-8 Rotary Encoder 2 SW");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-8 RE2 SW sends m76");
    display.display();
      MIDI.sendNoteOn(76, 127, 1); //E4 76 Send MIDI Note On (A5, velocity 127, channel 1)Mackie Sends
    delay(200);
  } 
  else {
    MIDI.sendNoteOff(76, 0, 1); //E4 76  Send MIDI Note Off (A5, velocity 0, channel 1)Mackie Sends
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(8) == LOW) {
    Serial.println("MCP0-9 Rotary Encoder 3 SW");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-9 RE3 SW m78 mixer");
    display.display();
      MIDI.sendNoteOn(78, 127, 1); //F#4 78 Send MIDI Note On (F#4, velocity 127, channel 1)
    delay(200);
  } 
  else {
    //strip.setPixelColor(4, 0, 0, 0); // Turn off NeoPixel
    //strip.show();
    MIDI.sendNoteOff(78, 0, 1); //F#4 78  Send MIDI Note Off (F#4, velocity 0, channel 1)Mackie ff
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(9) == LOW) {
    Serial.println("MCP0-10 Rotary Encoder 3 A");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-10 RE3 A");
    display.display();
    delay(50);
  }
  ///////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(10) == LOW) {
    Serial.println("MCP0-11 Rotary Encoder 3 B");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-11 RE3 B");
    display.display();
    delay(50);
  }
  ////////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(11) == LOW) {
    Serial.println("MCP0-12 Rotary Encoder 4 SW");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-12 RE4 SW");
    display.display();
     MIDI.sendNoteOn(80, 127, 1); //G#4 80 Send MIDI Note On (G#4, velocity 127, channel 1)Mackie Inst
    delay(200);
  } 
  else {
    //strip.setPixelColor(4, 0, 0, 0); // Turn off NeoPixel
    //strip.show();
    MIDI.sendNoteOff(80, 0, 1); //G#4 80  Send MIDI Note Off (G#4, velocity 0, channel 1)Mackie Inst
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(12) == LOW) {
    Serial.println("MCP0-13 Rotary Encoder 4 B");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-13 RE4 B");
    display.display();
    delay(50);
  }
  //////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(13) == LOW) {
    Serial.println("MCP0-14 Rotary Encoder 4 A");
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-14 RE4 A");
    display.display();
    delay(50);
  }
  ////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(14) == LOW) {
    Serial.println("MCP0-15 REWIND");
    strip.setPixelColor(3, 0, 225, 225);
     strip.show();
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-15 REWIND m91");
    display.display();
    MIDI.sendNoteOn(91, 127, 1); //91 Send MIDI Note On (G5, velocity 127, channel 1)REWIND
    delay(200);
  }
  else {
    strip.setPixelColor(3, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(91, 0, 1); // 91Send MIDI Note Off (G5, velocity 0, channel 1)REWIND
  }
////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp0.digitalRead(15) == LOW) {
    Serial.println("MCP0-16 LOC1");
    strip.setPixelColor(2, 0, 0, 255);
     strip.show();
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP0-16 LOC1 88");
    display.display();
    strip.show();
     MIDI.sendNoteOn(88, 127, 1); // 88 Send MIDI Note On (E4, velocity 127, channel 1)
    delay(200);
  } 
  else {
    strip.setPixelColor(2, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(88, 0, 1); // 88  Send MIDI Note Off (E4, velocity 0, channel 1)
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////

  // MCP1 inputs
  if (mcp1.digitalRead(0) == LOW) {
    Serial.println("MCP1-1 B2");
    strip.setPixelColor(10, 0, 255, 255);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-1 B2 F2");
    display.display();
    strip.show();
       MIDI.sendNoteOn(55, 127, 1); //G2 55 Send MIDI Note On (G2, velocity 127, channel 1)F2 mackie
    delay(200);
  } 
  else {
    strip.setPixelColor(10, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(55, 0, 1); //G2 55  Send MIDI Note Off (G2, velocity 0, channel 1)F2 mackie
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp1.digitalRead(1) == LOW) {
    Serial.println("MCP1-2 B1");
    strip.setPixelColor(11, 0, 255, 255);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-2 B1 F1");
    display.display();
    strip.show();
       MIDI.sendNoteOn(54, 127, 1); //F#2 54 Send MIDI Note On (F#2, velocity 127, channel 1)Mackie F1
    delay(200);
  } 
  else {
    strip.setPixelColor(11, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(54, 0, 1); //F#2 54  Send MIDI Note Off (F#2, velocity 0, channel 1)Mackie F1
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp1.digitalRead(2) == LOW) {
    Serial.println("MCP1-3 Banp up");
    strip.setPixelColor(12, 0, 255, 0);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-3 Bank up M47" );
    display.display();
    strip.show();
      MIDI.sendNoteOn(47, 127, 1); //B1 47 Send MIDI Note On (B1, velocity 127, channel 1)Mackie Bank UP
    delay(200);
  } 
else {
    strip.setPixelColor(12, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(47, 0, 1); //B1 47  Send MIDI Note Off (B1, velocity 0, channel 1)Mackie Bank UP
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp1.digitalRead(3) == LOW) {
    Serial.println("MCP1-4 Bank Down");
    strip.setPixelColor(13, 0, 255, 0);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-4 Bank Down M46");
    display.display();
    strip.show();
      MIDI.sendNoteOn(46, 127, 1); //A#1 46 Send MIDI Note On (A#1, velocity 127, channel 1)Mackie Bank DOWN
    delay(200);
  } 
  else {
    strip.setPixelColor(13, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(46, 0, 1); //A#1 46  Send MIDI Note Off (A#1, velocity 0, channel 1)Mackie Bank DOWN
  }
  //////////////////////////////////////////////////////////////////////////
  if (mcp1.digitalRead(4) == LOW) {
    Serial.println("MCP1-5 MAIN RE EDIT");
    //strip.setPixelColor(9, 0, 255, 0);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-5 mAIN M51 EDIT");
    display.display();
    strip.show();
     MIDI.sendNoteOn(51, 127, 1); //D#2 51 Send MIDI Note On (D#2, velocity 127, channel 1)Mackie EDIT
    delay(200);
  } 
  else {
   // strip.setPixelColor(13, 0, 0, 0); // Turn off NeoPixel
    //strip.show();
    MIDI.sendNoteOff(51, 0, 1); //D#2 51  Send MIDI Note Off (D#2, velocity 0, channel 1)Mackie EDIT
  }
  //////////////////////////////////////////////////////////////////////////
  if (mcp1.digitalRead(5) == LOW) {
    Serial.println("MCP1-6 MAIN RE A");
    //strip.setPixelColor(10, 0, 255, 0);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-6 MAIN RE A");
    display.display();
    strip.show();
    delay(500);
  }
  if (mcp1.digitalRead(6) == LOW) {
    Serial.println("MCP1-7 MAIN RE B");
    //strip.setPixelColor(11, 0, 255, 0);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-7 MAIN RE B");
    display.display();
    strip.show();
    delay(500);
  }
  if (mcp1.digitalRead(7) == LOW) {
    Serial.println("NOT USED");
   // strip.setPixelColor(12, 0, 255, 0);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("NOT USED");
    display.display();
    strip.show();
    delay(500);
  }
  if (mcp1.digitalRead(8) == LOW) {
    Serial.println("MCP1-9 Stop");
    strip.setPixelColor(4, 0, 255, 0);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-9 STOP 93");
    display.display();
    strip.show();
     MIDI.sendNoteOn(93, 127, 1); //A5 94 Send MIDI Note On (A5, velocity 127, channel 1)
    delay(200);
  } 
  else {
    strip.setPixelColor(4, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(93, 0, 1); //A5 93  Send MIDI Note Off (A5, velocity 0, channel 1)Mackie ff
  }
  ///////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp1.digitalRead(9) == LOW) {
    Serial.println("MCP1-10 Play");
    strip.setPixelColor(5, 255, 255, 0);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-10 PLAY94");
    display.display();
    strip.show();
     MIDI.sendNoteOn(94, 127, 1); //A#5 94 Send MIDI Note On (A#5, velocity 127, channel 1)
    delay(200);
  } 
  else {
    strip.setPixelColor(5, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(94, 0, 1); //A#5 94  Send MIDI Note Off (A#5, velocity 0, channel 1)Mackie ff
  }
////////////////////////////////////////////////////////////////////////////////////////////////
  if (mcp1.digitalRead(10) == LOW) {
    Serial.println("MCP1-11 Record");
    strip.setPixelColor(6, 255, 0, 0);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-11 RECORD95");
    display.display();
    strip.show();
    MIDI.sendNoteOn(95, 127, 1); //B5 95 Send MIDI Note On (B5, velocity 127, channel 1)
    delay(200);
  } else {
    strip.setPixelColor(6, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(95, 0, 1); //B5 95  Send MIDI Note Off (B5, velocity 0, channel 1)Mackie ff
  }

  if (mcp1.digitalRead(11) == LOW) {
    Serial.println("MCP1-12 Fastforword");
    strip.setPixelColor(7, 0, 255, 255);
    strip.show();
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-12 FASTFORWORD92");
    display.display();
    
     MIDI.sendNoteOn(92, 127, 1); // Send MIDI Note On (, velocity 127, channel 1)
    delay(200);
  } else {
    strip.setPixelColor(7, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(92, 0, 1); // Send MIDI Note Off (, velocity 0, channel 1)Mackie ff
  
  }
  if (mcp1.digitalRead(12) == LOW) {
    Serial.println("MCP1-13 LOOP 86");
    strip.setPixelColor(1, 0, 255, 255);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-13 LOOP 86");
    display.display();
    strip.show();
         MIDI.sendNoteOn(86, 127, 1); //D5 86 Send MIDI Note On (D5, velocity 127, channel 1) PREVIOUS MARKER
    delay(200);
  } else {
    strip.setPixelColor(1, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(86, 0, 1); //D5 86 Send MIDI Note Off (D5, velocity 0, channel 1)PREVIOUS MARKER
  }
//////////////////////////////////////////////////////////////////////////////
  if (mcp1.digitalRead(13) == LOW) {
    Serial.println("MCP1-14 LOC2");
    strip.setPixelColor(0, 0, 255, 255);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-14 LOC2 90");
    display.display();
    strip.show();
     MIDI.sendNoteOn(90, 127, 1); //A2 57 Send MIDI Note On (, velocity 127, channel 1)NEXT MARKER
    delay(200);
  } else {
    strip.setPixelColor(0, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(90, 0, 1); //A2 57Send MIDI Note Off (, velocity 0, channel 1)NEXT MARKER
  }
//////////////////////////////////////////////////////////////////////////////
  if (mcp1.digitalRead(14) == LOW) {
    Serial.println("MCP1-15 B4");
    strip.setPixelColor(8, 0, 255, 255);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-15 B4 F4 57");
    display.display();
    MIDI.sendNoteOn(57, 127, 1); //A2 57 Send MIDI Note On (, velocity 127, channel 1)F4
    delay(200);
  } else {
    strip.setPixelColor(8, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(57, 0, 1); //A2 57Send MIDI Note Off (, velocity 0, channel 1)F4
  }
//////////////////////////////////////////////////////////////////////////////
  if (mcp1.digitalRead(15) == LOW) {
    Serial.println("MCP1-16 B3");
    strip.setPixelColor(9, 0, 255, 255);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(10, 10);
    display.println("MCP1-16 B3 Midi 90");
    display.display();
    MIDI.sendNoteOn(54, 127, 1); //F#2 54 Send MIDI Note On (, velocity 127, channel 1)F3
    delay(200);
  } else {
    strip.setPixelColor(9, 0, 0, 0); // Turn off NeoPixel
    strip.show();
    MIDI.sendNoteOff(54, 0, 1); //F#2 54 Send MIDI Note Off (, velocity 0, channel 1)F3
  }
}