Description

A musical instrument that plays musical tracks and flashes LEDs depending upon which switch is pressed. Uses processing to play music.

Materials

• Plastic waterbottle
• coffee stirrers
• 5 Leds
• 5 10k resistors
• 5+ switches
• Balsa Wood
• Paper towel inner roll
• Blue tape
• Arduino & breadboard

Arduino Code

// define input pins for each switch
int switchOne = 2; //Pins 0 and 1 are used for Transmit/Receive and don't work for input
int switchTwo = 4; //pin3 appears to be BAD
int switchThree = 5;
int switchFour= 7; //so does pin6
int switchFive = 8;
// define variables to store the value coming from the switches
int valOne = LOW;
int valTwo = LOW;
int valThree = LOW;
int valFour = LOW;
int valFive = LOW;

void setup() {
// set the input mode for each pin
pinMode(switchOne, INPUT);
pinMode(switchTwo, INPUT);
pinMode(switchThree, INPUT);
pinMode(switchFour, INPUT);
pinMode(switchFive, INPUT);
Serial.begin(9600);
}
void loop() {
valOne = digitalRead(switchOne); // read the value from the sensor (High or Low)
if(valOne==HIGH) {
Serial.print(1);
}
valTwo = digitalRead(switchTwo); // read the value from switch

if(valTwo==HIGH) {
Serial.print(2);
}
valThree = digitalRead(switchThree); // read the value from switch

if(valThree==HIGH) {
Serial.print(3);
}
valFour = digitalRead(switchFour); // read the value from switch
if(valFour==HIGH) {
Serial.print(4);
}
valFive = digitalRead(switchFive); // read the value from switch
if(valFive==HIGH) {
Serial.print(5);
}
delay(100);
}

Processing Code 

//Different start time
//To view this content, you need to install Java from java.com
import processing.serial.*;
import jmetude.*;

String portname = "COM8"; //COM7
Serial port;
int lf = 10;
int s =0 ;
int v=0;
int bytesRecieved = 0;
Etude e;
float notes[][] = {{e.E4,  e.SQ},
                   {e.FS4, e.SQ},
                   {e.B4,  e.SQ},
                   {e.CS5, e.SQ},
                   {e.D5,  e.SQ},
                   {e.FS4, e.SQ},
                   {e.E4,  e.SQ},
                   {e.CS5, e.SQ},
                   {e.B4,  e.SQ},
                   {e.FS4, e.SQ},
                   {e.D5,  e.SQ},
                   {e.CS5, e.SQ}};

void setup() {
    size(200,100);
   
    //println(Serial.list());
    port = new Serial(this, portname, 9600);

    if (port.available()<=0){
      print(".");
      delay(200);
    }
    //bytesRecieved = port.available();
    //port.bufferUntil(lf); 
   
    //Initialization of Etude classes
    e = new Etude(this);
    e.createScore("score");
    e.createPart("part1");
   
    e.createPhrase("phrase1", notes);
    e.createPhrase("phrase2", notes);
    e.createPhrase("phrase3", notes);
   
    e.transpose("phrase2",-12);
    e.transpose("phrase3",24);
   
    e.setPhraseStartTime("phrase2",6);
    e.setPhraseStartTime("phrase3",12);
   
    e.repeatPhrase("phrase1",12);
    e.repeatPhrase("phrase2",10);
    e.repeatPhrase("phrase3",8);
   
    e.addPartPhrase("part1", "phrase1");
    e.addPartPhrase("part1", "phrase2");
    e.addPartPhrase("part1", "phrase3");
 
    e.addScorePart("score","part1");}

void draw() {
  background(40,40,40);
  if (port.available()>0){
    serialEvent(port.read());
    //print(v);
    //playMusic(v);
    delay(1000);
  }
}

void playMusic(int inst) {
  e.stopMIDI();
//  int inst = (int)random(0,127);
  e.setPartInstrument("part1",inst);
  e.playMIDI("score");
}

void serialEvent(int s) {
  s = port.read(); 
  print(s);
  if (s==48){
    print(s);
  }
  else{
    s = s%127;
    playMusic(s);
    delay(200);
  } 
}
 

Picture