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[[Image: CIRCUIT_500A.jpg]]
The Code:
#include "pitches.h"
// notes
int SOS[] = {
NOTE_A4,NOTE_A4,NOTE_A4,NOTE_A4,NOTE_A4,NOTE_A4,NOTE_A4,NOTE_A4,NOTE_A4,NOTE_0 };
// note durations: 4 = quarter note, 8 = eighth note, etc.:
int toneDurations[] = {
4,4,4,2,2,2,4,4,4,4 };
int cardiacBeep[] = {
NOTE_A4,NOTE_A4,NOTE_A4,NOTE_A4,NOTE_A4 };
int cardiacBeepDurations[] = {
4,4,4,4,4 };
int melody[] = {
NOTE_A4,NOTE_A4,NOTE_A4,NOTE_A4,NOTE_C5,NOTE_B4,NOTE_B4,NOTE_A4,NOTE_A4,NOTE_A4,NOTE_A4};
int noteDurations[] = {
2, 2, 4, 1,2,4,2,4,2,4,1 };
void setup() {
//run SOS 3 times
for (int runSOS = 0; runSOS < 3; runSOS++) {
// SOS
for (int thisTone = 0; thisTone < 10; thisTone++) {
// to calculate the tone duration, take one second, divided by note type
int toneDuration = 1000/toneDurations[thisTone];
// call tone
tone(8,SOS[thisTone],toneDuration);
// silence to distinguish between notes
int pauseBetweenTones = toneDuration*2;
delay(pauseBetweenTones);
}
}
// begin cardiac beep
for (int thisCardiacBeep = 0; thisCardiacBeep < 5; thisCardiacBeep++) {
int cardiacBeepDuration = 1000/cardiacBeepDurations[thisCardiacBeep];
tone(8,cardiacBeep[thisCardiacBeep],cardiacBeepDuration);
int pauseBetweenBeeps = cardiacBeepDuration*5.3;
delay(pauseBetweenBeeps);
}
// cardiac arrest
tone(8,NOTE_A4,5000);
// pause before funeral march
delay(6000);
// begin Funeral March
for (int thisNote = 0; thisNote < 11; thisNote++) {
int noteDuration = 1000/noteDurations[thisNote];
tone(8,melody[thisNote],noteDuration);
int pauseBetweenNotes = noteDuration*1.1;
delay(pauseBetweenNotes);
}
}
void loop() {
// no need to repeat the melody.
}
Include this on second tab:
#define NOTE_0 0
#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_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
When I first wired the speaker up with the Arduino and the breadboard, the signal was very weak and produced a very quiet tone. I decided to add the TIP120 and the diode to increase the volume of the signal. I wanted to make the piece self-contained and not require a laptop for power, so I powered the Arduino with a 9V battery. In doing so, I discovered that my DC in on my Arduino didn't work, so I clipped a micro USB plug from and old cell phone charger and soldered it to the wires from the battery. I then cut out a section of a textbook to house the electronics. Finally, I added a push-to-break switch so that the program could be triggered without having to open the book. The switch shuts the Arduino off momentarily, causing it to restart the program.
