Description

This project consists in developing a wearable device which can determine and measure the different signals either analogical or digital by interacting with the external environment. For my project, I decided to create a sound generator implemented in a bracelet.

The materials needed for this projects are the following:

1 Arduino module
1 Sharp GPD2D12 IR ranger
1 Solderless breadboard
1 Bracelet
1 Speaker
6 LED's
6 resistors

The schematic diagram for this project is the following

Figure 1

Procedure

This project shows us the way how the distance between the sensor (located under the hand) and the surface of the table is used for generating sound and turning leds on or off, depending on how far or near is your hand.

Figure 2

Figure 3

Code

int speakerPin = 9;
int i, irReader = 1;    // the analog input pin for the ir reader
int pins[] = { 2, 4, 7, 8, 12, 13 }; // an array of pin numbers
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 setup() {
pinMode(speakerPin, OUTPUT);
for (i = 0; i < 6; i++)   // the array elements are numbered from 0 to num_pins - 1
    pinMode(pins[i], OUTPUT);      // set each pin as an output
}
void loop() {
i = analogRead(irReader);
if(i > 0 && i < 112){
      digitalWrite(pins[0], HIGH);
      playTone (1915, 300);
}
else{
      digitalWrite(pins[0], LOW);
      digitalWrite(pins[1], LOW);
      digitalWrite(pins[2], LOW);
      digitalWrite(pins[3], LOW);
      digitalWrite(pins[4], LOW);
      digitalWrite(pins[5], LOW);
}
if(i > 112 && i < 224){
      digitalWrite(pins[0], HIGH);
      digitalWrite(pins[1], HIGH);
      playTone (1700, 300);
}
else{
      digitalWrite(pins[1], LOW);
      digitalWrite(pins[2], LOW);
      digitalWrite(pins[3], LOW);
      digitalWrite(pins[4], LOW);
      digitalWrite(pins[5], LOW);
}
if(i > 224 && i < 336){
      digitalWrite(pins[0], HIGH);
      digitalWrite(pins[1], HIGH);
      digitalWrite(pins[2], HIGH);
      playTone (1519, 300);
}
else{
      digitalWrite(pins[2], LOW);
      digitalWrite(pins[3], LOW);
      digitalWrite(pins[4], LOW);
      digitalWrite(pins[5], LOW);
}
if(i > 336 && i < 448){
      digitalWrite(pins[0], HIGH);
      digitalWrite(pins[1], HIGH);
      digitalWrite(pins[2], HIGH);
      digitalWrite(pins[3], HIGH);
      playTone (1432, 300);
}
else{
      digitalWrite(pins[3], LOW);
      digitalWrite(pins[4], LOW);
      digitalWrite(pins[5], LOW);
}
if(i > 448 && i < 560){
      digitalWrite(pins[0], HIGH);
      digitalWrite(pins[1], HIGH);
      digitalWrite(pins[2], HIGH);
      digitalWrite(pins[3], HIGH);
      digitalWrite(pins[4], HIGH);
      playTone (1275, 300);
}
else{
      digitalWrite(pins[4], LOW);
      digitalWrite(pins[5], LOW);
}
if(i > 560 && i < 672){
      digitalWrite(pins[0], HIGH);
      digitalWrite(pins[1], HIGH);
      digitalWrite(pins[2], HIGH);
      digitalWrite(pins[3], HIGH);
      digitalWrite(pins[4], HIGH);
      digitalWrite(pins[5], HIGH);
      playTone (1136, 300);
}
else{
      digitalWrite(pins[5], LOW);
}
}