#include <CapacitiveSensor.h>



#define speaker 11


// Set the Send Pin & Receive Pin.
CapacitiveSensor   cs_2_3 = CapacitiveSensor(2,3);
CapacitiveSensor   cs_2_4 = CapacitiveSensor(2,4);
CapacitiveSensor   cs_2_5 = CapacitiveSensor(2,5);
CapacitiveSensor   cs_2_6 = CapacitiveSensor(2,6);
CapacitiveSensor   cs_2_7 = CapacitiveSensor(2,7);
CapacitiveSensor   cs_2_8 = CapacitiveSensor(2,8);
CapacitiveSensor   cs_2_9 = CapacitiveSensor(2,9);
CapacitiveSensor   cs_2_10 = CapacitiveSensor(2,10);
CapacitiveSensor   cs_2_12 = CapacitiveSensor(2,12);
CapacitiveSensor   cs_2_13 = CapacitiveSensor(2,13);
CapacitiveSensor   cs_2_22 = CapacitiveSensor(2,22);
CapacitiveSensor   cs_2_24 = CapacitiveSensor(2,24);
CapacitiveSensor   cs_2_26 = CapacitiveSensor(2,26);


void setup()
{
  cs_2_6.set_CS_AutocaL_Millis(0xFFFFFFFF);     // turn off autocalibrate on channel 1 - just as an example

  // Arduino start communicate with computer.
  Serial.begin(9600);
}

void loop()
{
  // Set a timer.
  long start = millis();

  // Set the sensitivity of the sensors.
  long total1 =  cs_2_3.capacitiveSensor(30);
  long total2 =  cs_2_4.capacitiveSensor(30);
  long total3 =  cs_2_5.capacitiveSensor(30);
  long total4 =  cs_2_6.capacitiveSensor(30);
  long total5 =  cs_2_7.capacitiveSensor(30);
  long total6 =  cs_2_8.capacitiveSensor(30);
  long total7 =  cs_2_9.capacitiveSensor(30);
  long total8 =  cs_2_10.capacitiveSensor(30);
  long total9 =  cs_2_12.capacitiveSensor(30);
  long total10 = cs_2_13.capacitiveSensor(30);
  long total11 = cs_2_22.capacitiveSensor(3000);
  long total12 = cs_2_24.capacitiveSensor(3000);
  long total13 = cs_2_26.capacitiveSensor(3000);




  Serial.print(millis() - start);        // check on performance in milliseconds
  Serial.print("\t");                    // tab character for debug windown spacing

  Serial.print(total1);                  // print sensor output 1
  Serial.print("\t");                    // Leave some space before print the next output
  Serial.print(total2);                  // print sensor output 2
  Serial.print("\t");                    // Leave some space before print the next output
  Serial.print(total3);                  // print sensor output 3
  Serial.print("\t");                    // Leave some space before print the next output
  Serial.print(total4);                  // print sensor output 4
  Serial.print("\t");                    // Leave some space before print the next output
  Serial.print(total5);                  // print sensor output 5
  Serial.print("\t");                    // Leave some space before print the next output
  Serial.print(total6);                  // print sensor output 6
  Serial.print("\t");                    // Leave some space before print the next output
  Serial.print(total7);                   // print sensor output 7                                        // Leave some space before print the next output
  Serial.print("\t");
  Serial.println(total8);     // print sensor output 8                                         // "println" - "ln" represent as "line", system will jump to next line after print the output.
  Serial.print("\t");
  Serial.println(total9);
  Serial.print("\t");
  Serial.println(total10);
  Serial.print("\t");
  Serial.println(total11);
  Serial.print("\t");
  Serial.println(total12);
  Serial.print("\t");
  Serial.println(total13);



  // When hand is touched the sensor, the speaker will produce a tone.
  // I set a threshold for it, so that the sensor won't be too sensitive.
  if (total1 > 500) tone(speaker,226);   // frequency
  if (total2 > 500) tone(speaker,277);   // you can see https://www.arduino.cc/en/Tutorial/toneMelody if you want to change frequency
  if (total3 > 500) tone(speaker,294);
  if (total4 > 500) tone(speaker,311);
  if (total5 > 500) tone(speaker,330);
  if (total6 > 500) tone(speaker,349);
  if (total7 > 500) tone(speaker,370);
  if (total8 > 500) tone(speaker,392);
  if (total9 > 500) tone(speaker,415);
  if (total10 > 500) tone(speaker,440);
  if (total11 > 500) tone(speaker,466);
  if (total12 > 500) tone(speaker,494);
  if (total13 > 500) tone(speaker,523);

  // When hand didn't touch on it, no tone is produced.
 if (total1<=500  &  total2<=500  &  total3<=500 & total4<=500  &  total5<=500  &  total6<=500 &  total7<=500 &  total8<=500 & total9<=500 & total10<=500 & total11<=500 & total12<=500 & total13<=500)
    noTone(speaker);

  delay(10);                             // arbitrary delay to limit data to serial port
}