MIDI!

gistfile1.txt

#include <MIDI.h>
#include <CapacitiveSensor.h>

int threshold = 2000, // for 10Mohm
    threshold2 = 200, // for  1Mohm
    channel = 1, velocity = 100, instrument = 0;

boolean status1 = false, prev_status1 = false,
        status2 = false, prev_status2 = false,
        status3 = false, prev_status3 = false,
        status4 = false, prev_status4 = false,
        status5 = false, prev_status5 = false,
        status6 = false, prev_status6 = false,
        status7 = false, prev_status7 = false,
        status8 = false, prev_status8 = false,
        status9 = false, prev_status9 = false,
        status10 = false, prev_status10 = false,        
        status_a = false, prev_status_a = false;

CapacitiveSensor  cs_0_1 = CapacitiveSensor(2,3), cs_0_2 = CapacitiveSensor(2,4),
                  cs_0_3 = CapacitiveSensor(2,5), cs_0_4 = CapacitiveSensor(2,6),
                  cs_0_5 = CapacitiveSensor(2,7), cs_0_6 = CapacitiveSensor(2,8),
                  cs_0_7 = CapacitiveSensor(2,9), cs_0_8 = CapacitiveSensor(2,10),
                  cs_0_9 = CapacitiveSensor(2,11), cs_0_10 = CapacitiveSensor(2,12);


void sendMidiEvent(int note, boolean on)
{
//  Serial.print(note);
  if(on){
    MIDI.sendNoteOn(note, velocity, channel);  
//    Serial.print("on");
  } else {
//    Serial.print("off");
    MIDI.sendNoteOff(note, velocity, channel);  
  }
}

void setup()               
{
  cs_0_1.set_CS_AutocaL_Millis(0xFFFFFFFF);     // turn off autocalibrate on channel 1 - just as an example
  Serial.begin(38400);
  pinMode(13, OUTPUT);
  pinMode(A0, INPUT_PULLUP);
  digitalWrite(13, LOW);
}

void loop()
{
   long v1 =  cs_0_1.capacitiveSensor(30), v2 =  cs_0_2.capacitiveSensor(30),
        v3 =  cs_0_3.capacitiveSensor(30), v4 =  cs_0_4.capacitiveSensor(30),
        v5 =  cs_0_5.capacitiveSensor(30), v6 =  cs_0_6.capacitiveSensor(30),
        v7 =  cs_0_7.capacitiveSensor(30), v8 =  cs_0_8.capacitiveSensor(30),
        v9 =  cs_0_9.capacitiveSensor(30), v10 =  cs_0_10.capacitiveSensor(30),        
        v_a = analogRead(0); // instrument value ++   

   int light = LOW;

// note chart : http://www.phys.unsw.edu.au/jw/notes.html
// (C3)48, 50, 52, 53, 55, 57, 59, 60

   status1 = (v1 > threshold);
   if(status1 != prev_status1){
     sendMidiEvent(60, status1);
   }
   status2 = (v2 > threshold);
   if(status2 != prev_status2){
     sendMidiEvent(62, status2);
   }
   status3 = (v3 > threshold);
   if(status3 != prev_status3){
     sendMidiEvent(64, status3);
   }
   status4 = (v4 > threshold);
   if(status4 != prev_status4){
     sendMidiEvent(65, status4);
   }
   status5 = (v5 > threshold);
   if(status5 != prev_status5){
     sendMidiEvent(67, status5);
   }
   status6 = (v6 > threshold);
   if(status6 != prev_status6){
     sendMidiEvent(69, status6);
   }
   status7 = (v7 > threshold);
   if(status7 != prev_status7){
     sendMidiEvent(71, status7);
   }
   status8 = (v8 > threshold2);
   if(status8 != prev_status8){
     sendMidiEvent(72, status8);
   }
   status9 = (v9 > threshold2);
   if(status9 != prev_status9){
     sendMidiEvent(74, status9);
   }
   status10 = (v10 > threshold2);
   if(status10 != prev_status10){
     sendMidiEvent(76, status10);
   }

  status_a = (v_a > 800);
  if(status_a != prev_status_a && v_a < 800){
    instrument++;
    // Serial.println("instrument++!");
    MIDI.sendProgramChange(instrument, channel);
  }

  light = (status1+status2+status3+status4+status5+status6+status7+status8+status9+status10 > 0) ? HIGH : LOW;
/*
  Serial.print(v1);
  Serial.print("\t");
  Serial.print(v2);
  Serial.print("\t");
  Serial.print(v3);
  Serial.print("\t");
  Serial.print(v4);
  Serial.print("\t");  
  Serial.print(v5);
  Serial.print("\t");  
  Serial.print(v6);
  Serial.print("\t");  
  Serial.print(v7);
  Serial.print("\t");
  Serial.print(v8);
  Serial.print("\t");
  Serial.print(v9);
  Serial.print("\t");
  Serial.println(v10);
*/  
  digitalWrite(13, light);

  delay(20);                             // arbitrary delay to limit data to serial port 
  
  prev_status1 = status1;
  prev_status2 = status2;
  prev_status3 = status3;
  prev_status4 = status4;
  prev_status5 = status5;  
  prev_status6 = status6;
  prev_status7 = status7;
  prev_status8 = status8;
  prev_status9 = status9;
  prev_status10 = status10;
  prev_status_a = status_a;
  
}