Assignment: Input / Output Coincidence Lab Assignment

Collaborators:

Assignment: Input / Output Coincidence Lab Assignment
Collaborators:

Assignment: Input / Output Coincidence Lab Assignment
Collaborators:

Assignment: Input / Output Coincidence Lab Assignment
Collaborators:

Description

I created a stress ball that plays soft music when a person squeezes on it. The harder the person squeezes, the slower the beat will be and the music will play a lot slower. The music that plays is the prelude from Final Fantasy. I thoguht that music was very soothing and would help people calm down when being stressed.

Materials

• Pezio Speaker
• Force sensor
• Squishy Heart Shaped Stress ball
• Post-it note
• Electrical Tape

Arduino Code

int speakerPin = 13;
int forcePin = 5;

int length = 13; // the number of notes
char* notes[] = {"A#2","C2", "D2", "F2", "B2", "C3", "D3", "F3", "A#3", "C4", 
"D4", "F4", "A#4", "C5", "D5", "F5", "A#5","C6", "D6", "F6", "A#6",
"F6","D6","C6","A#5","F5","D5","C5","A#4","F4","D4","C4","A#3","F3",
"D3","C3","B2","F2","D2","C2"}; // a space represents a rest
 
int beats[] = { 2, 2, 2, 1, 2, 2, 2, 1, 1, 1, 1, 2, 5 };
int tempo = 100;

void playTone(int tone, int duration) {
 for (long i = 0; i < duration * 1000L; i += tone * 2) {
 digitalWrite(speakerPin, HIGH);
 delayMicroseconds(tone);
 digitalWrite(speakerPin, LOW);
 delayMicroseconds(tone);
 }
}

void playNote(char* note, int duration) {
 char* names[] = {"A#2","C2", "D2", "F2", "B2", "C3", "D3", "F3", "A#3", "C4", 
 "D4", "F4", "A#4", "C5", "D5", "F5", "A#5","C6", "D6", "F6", "A#6"};
 int tones[] =   {4290,7644,6810,5727,4050,3822,3405,2864,2145,1911,
 1703,1432,1073,956,851,716,536,478,426,357,268};
 
 // play the tone corresponding to the note name
 int nums = sizeof(names)/sizeof(char*);
 for (int i = 0; i < nums; i++) {
 if (strcmp(names[i], note)) {
 playTone(tones[i], duration);
 }
 }
}

void setup() {
 pinMode(speakerPin, OUTPUT);
 Serial.begin(9600);
}

void loop() {
 /*
 int forceVal = analogRead(forcePin); // read the value from the sensor, 0-1023
 forceVal = forceVal;
 Serial.print("F"); 
 Serial.println(forceVal);       // writing the value to the PC via serial connection 
 delay(10);
 
 if (forceVal < 100)
 tempo = tempo-(100*(forceVal+1));
 */
 for (int i = 0; i < length; i++) {
 int forceVal = analogRead(forcePin); // read the value from the sensor, 0-1023
 if (forceVal < 1023) {
 Serial.print("F"); 
 Serial.println(forceVal);       // writing the value to the PC via serial connection 
 delay(10);
 
 if (forceVal < 100)
 tempo = tempo-(100*(forceVal+1));  
 
 
 if (strcmp(notes[i], " ") == 0) {
 delay(tempo); // rest
 } else {
 playNote(notes[i], tempo);
 }
 
 // pause between notes
 delay(tempo / 2); 
 }
 }
 
}

Images