Birthday card

Submitted by sebarness on Tue, 03/05/2013 - 19:38

My goal was to use a photocell to sense when a person would open up a birthday card. When the photocell senses light it plays the piezo buzzer. I spent hours trying to figure out how to pause the song when a person closes the card again but I could not get it to work. Instead, if you close the card the buzzer will keep playing until that round is over.  

Materials

-arduino

-breadboard

-piezo buzzer

-photocell

-resistors 

-wires

CODE

 

//adapted from cytron technologies
 
#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define NOTE_D1  37
#define NOTE_DS1 39
#define NOTE_E1  41
#define NOTE_F1  44
#define NOTE_FS1 46
#define NOTE_G1  49
#define NOTE_GS1 52
#define NOTE_A1  55
#define NOTE_AS1 58
#define NOTE_B1  62
#define NOTE_C2  65
#define NOTE_CS2 69
#define NOTE_D2  73
#define NOTE_DS2 78
#define NOTE_E2  82
#define NOTE_F2  87
#define NOTE_FS2 93
#define NOTE_G2  98
#define NOTE_GS2 104
#define NOTE_A2  110
#define NOTE_AS2 117
#define NOTE_B2  123
#define NOTE_C3  131
#define NOTE_CS3 139
#define NOTE_D3  147
#define NOTE_DS3 156
#define NOTE_E3  165
#define NOTE_F3  175
#define NOTE_FS3 185
#define NOTE_G3  196
#define NOTE_GS3 208
#define NOTE_A3  220
#define NOTE_AS3 233
#define NOTE_B3  247
#define NOTE_C4  262
#define NOTE_C4_1 260
#define NOTE_CS4 277
#define NOTE_D4  294
#define NOTE_DS4 311
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_FS4 370
#define NOTE_G4  392
#define NOTE_GS4 415
#define NOTE_A4  440
#define NOTE_AS4 466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_CS5 554
#define NOTE_D5  587
#define NOTE_DS5 622
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_FS5 740
#define NOTE_G5  784
#define NOTE_GS5 831
#define NOTE_A5  880
#define NOTE_AS5 932
#define NOTE_B5  988
#define NOTE_C6  1047
#define NOTE_CS6 1109
#define NOTE_D6  1175
#define NOTE_DS6 1245
#define NOTE_E6  1319
#define NOTE_F6  1397
#define NOTE_FS6 1480
#define NOTE_G6  1568
#define NOTE_GS6 1661
#define NOTE_A6  1760
#define NOTE_AS6 1865
#define NOTE_B6  1976
#define NOTE_C7  2093
#define NOTE_CS7 2217
#define NOTE_D7  2349
#define NOTE_DS7 2489
#define NOTE_E7  2637
#define NOTE_F7  2794
#define NOTE_FS7 2960
#define NOTE_G7  3136
#define NOTE_GS7 3322
#define NOTE_A7  3520
#define NOTE_AS7 3729
#define NOTE_B7  3951
#define NOTE_C8  4186
#define NOTE_CS8 4435
#define NOTE_D8  4699
#define NOTE_DS8 4978
 
 
 
// notes in the melody:
int melody[] = {
   NOTE_C4_1,NOTE_C4, NOTE_D4, NOTE_C4,NOTE_F4,NOTE_E4,
   NOTE_C4_1,NOTE_C4,NOTE_D4,NOTE_C4,NOTE_G4,NOTE_F4,
   NOTE_C4_1,NOTE_C4,NOTE_C5,NOTE_A4,NOTE_F4,NOTE_E4,NOTE_D4,
   NOTE_AS4,NOTE_AS4,NOTE_A4,NOTE_F4,NOTE_G4,NOTE_F4};
   
// note durations: 4 = quarter note, 8 = eighth note, etc.:
int noteDurations[] = {
  6, 6, 3, 3,3,3,
  6, 6, 3, 3,3,3,
  6, 6, 3, 3,3,3,3, 
  6, 6, 3, 3,3,3 };
 
int photoPin = 0;    // select pin for photocell
//int touchPin = 1;
 
int speakerPin = 7;
//int redLED = 13;
 
int musicState = 0;
 
int val = 0;
 
void setup() {
  pinMode(speakerPin, OUTPUT); 
//  pinMode(redLED, OUTPUT);
 
  
  Serial.begin(9600);
  Serial.println("ready");
}
 
void loop() {
  //turn everything off
  digitalWrite(speakerPin, LOW);
//  digitalWrite(redLED, LOW);
 
  
  musicState = analogRead(photoPin);
  Serial.println(musicState);
  
  // if the force sensor is pushed down enough, turn on the LEDs and make noise
  if (musicState > 300){
//    int brightness = soundState/4;
//    analogWrite(redLED, brightness);
   
 
    val = analogRead(photoPin);    // read value from the sensor
    val = val/2;                 // process value 
     
    pinMode(speakerPin,OUTPUT);
  for (int thisNote = 0; thisNote < 26; thisNote++) {
 
    // to calculate the note duration, take one second 
    // divided by the note type.
    //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
    int noteDuration = 1000/noteDurations[thisNote];
    tone(7, melody[thisNote],noteDuration);
 
    int pauseBetweenNotes = noteDuration + 50;      //delay between pulse
    delay(pauseBetweenNotes);
    
   noTone(7);                // stop the tone playing
  }
  }
}
photo (11).JPG
photo (12).JPG
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