// Star Wars Imperial March (John Williams' masterpiece)
// copy-paste from http://paste2.org/p/123617
int ledPin = 13;

//led for visualization (use 13 for built-in led)
int speakerPin = 11;

//speaker connected to one of the PWM ports
#define c 261
#define d 294
#define e 329
#define f 349
#define g 391
#define gS 415
#define a 440
#define aS 455
#define b 466
#define cH 523
#define cSH 554
#define dH 587
#define dSH 622
#define eH 659
#define fH 698
#define fSH 740
#define gH 784
#define gSH 830
#define aH 880

//frequencies for the tones we're going to use

//used http://home.mit.bme.hu/~bako/tonecalc/tonecalc.htm to get these

 

void setup()    

{        

  pinMode(ledPin, OUTPUT);

  // sets the ledPin to be an output

  pinMode(speakerPin, OUTPUT);  

  //sets the speakerPin to be an output

}        

         

void loop()     // run over and over again

{

  march();

}        

         

void beep (unsigned char speakerPin, int frequencyInHertz, long timeInMilliseconds)

{

    digitalWrite(ledPin, HIGH);  

    //use led to visualize the notes being played

   

    int x;      

    long delayAmount = (long)(1000000/frequencyInHertz);

    long loopTime = (long)((timeInMilliseconds*1000)/(delayAmount*2));

    for (x=0;x<loopTime;x++)    

    {    

        digitalWrite(speakerPin,HIGH);

        delayMicroseconds(delayAmount);

        digitalWrite(speakerPin,LOW);

        delayMicroseconds(delayAmount);

    }    

   

    digitalWrite(ledPin, LOW);

    //set led back to low

   

    delay(20);

    //a little delay to make all notes sound separate

}        

         

void march()

{        

    //for the sheet music see:

    //http://www.musicnotes.com/sheetmusic/mtd.asp?ppn=MN0016254

    //this is just a translation of said sheet music to frequencies / time in ms

    //used 500 ms for a quart note

   

    beep(speakerPin, a, 500);

    beep(speakerPin, a, 500);    

    beep(speakerPin, a, 500);

    beep(speakerPin, f, 350);

    beep(speakerPin, cH, 150);

   

    beep(speakerPin, a, 500);

    beep(speakerPin, f, 350);

    beep(speakerPin, cH, 150);

    beep(speakerPin, a, 1000);

    //first bit

   

    beep(speakerPin, eH, 500);

    beep(speakerPin, eH, 500);

    beep(speakerPin, eH, 500);    

    beep(speakerPin, fH, 350);

    beep(speakerPin, cH, 150);

   

    beep(speakerPin, gS, 500);

    beep(speakerPin, f, 350);

    beep(speakerPin, cH, 150);

    beep(speakerPin, a, 1000);

    //second bit...

   

    beep(speakerPin, aH, 500);

    beep(speakerPin, a, 350);

    beep(speakerPin, a, 150);

    beep(speakerPin, aH, 500);

    beep(speakerPin, gSH, 250);

    beep(speakerPin, gH, 250);

   

    beep(speakerPin, fSH, 125);

    beep(speakerPin, fH, 125);    

    beep(speakerPin, fSH, 250);

    delay(250);

    beep(speakerPin, aS, 250);    

    beep(speakerPin, dSH, 500);  

    beep(speakerPin, dH, 250);  

    beep(speakerPin, cSH, 250);  

    //start of the interesting bit

   

    beep(speakerPin, cH, 125);  

    beep(speakerPin, b, 125);  

    beep(speakerPin, cH, 250);      

    delay(250);

    beep(speakerPin, f, 125);  

    beep(speakerPin, gS, 500);  

    beep(speakerPin, f, 375);  

    beep(speakerPin, a, 125);

   

    beep(speakerPin, cH, 500);

    beep(speakerPin, a, 375);  

    beep(speakerPin, cH, 125);

    beep(speakerPin, eH, 1000);

    //more interesting stuff (this doesn't quite get it right somehow)

   

    beep(speakerPin, aH, 500);

    beep(speakerPin, a, 350);

    beep(speakerPin, a, 150);

    beep(speakerPin, aH, 500);

    beep(speakerPin, gSH, 250);

    beep(speakerPin, gH, 250);

   

    beep(speakerPin, fSH, 125);

    beep(speakerPin, fH, 125);    

    beep(speakerPin, fSH, 250);

    delay(250);

    beep(speakerPin, aS, 250);    

    beep(speakerPin, dSH, 500);  

    beep(speakerPin, dH, 250);  

    beep(speakerPin, cSH, 250);  

    //repeat... repeat

   

    beep(speakerPin, cH, 125);  

    beep(speakerPin, b, 125);  

    beep(speakerPin, cH, 250);      

    delay(250);

    beep(speakerPin, f, 250);  

    beep(speakerPin, gS, 500);  

    beep(speakerPin, f, 375);  

    beep(speakerPin, cH, 125);

           

    beep(speakerPin, a, 500);            

    beep(speakerPin, f, 375);            

    beep(speakerPin, c, 125);            

    beep(speakerPin, a, 1000);      

    //and we're done \ó/    

}