Introduction: EXO: Baby Don't Cry

By

Using Arduino to code part of the song, EXO's Baby Don't Cry.

Resources, references, and inspirations:

    1. Related course lectures from school.
    2. Music sheet: EXO - Baby Don't Cry
    3. http://pasted.co/d1a629c1
    4. https://www.arduino.cc/en/Tutorial/ToneMelody?from=Tutorial.Tone

    Step 1: Materials

    1. Lightblue Bean Plus (+)
    2. Grove Board
    3. Vibration Motor
    4. Magnetic Switch
    5. Buzzer (Starter kit)
    6. Magnet

    Step 2: Turn Bean+ Voltage to 5

    Near A3, A4, A5: move the switch toward A5, then connect the Bean+ to Grove Board.

    Step 3: Connect Vibration Motor, Magnetic Switch, and the Buzzer to Individual Wires

    Step 4: Connect Wires to Grove Board

    1. Vibration Motor to D0/D1
    2. Magnetic Switch to D2/D3
    3. Buzzer to D3/D4

    Step 5: You're Done!

    Take the magnet and put it on or touch the Magnetic Switch.

    Step 6: Code - EXO.ino

    /**
    * NOTE:

    * 1. Bean needs to be on voltage of 5 (5v)

    * 2. notes array contain names of available tones, not the actual tone for the song

    * 3. Vibration Motor doesn't always stop when magnet is removed from the Magnetic Switch --> 99% of the time

    * 4. Additional idea or WIP for Vibration Motor: able to vibrate along with the tones

    *

    * Material list and links

    * 1. Lightblue Bean Plus (+): http://store.punchthrough.com/collections/bean-fa...

    * 2. Grove Board: http://store.punchthrough.com/collections/bean-fa...

    * 3. Vibration Motor: http://store.punchthrough.com/collections/bean-fa...

    * 4. Magnetic Switch: http://store.punchthrough.com/collections/bean-fa...

    * 5. Buzzer (Starter kit): http://store.punchthrough.com/collections/bean-fa...

    * 6. Magnet: http://store.punchthrough.com/collections/bean-fa...

    **/

    int speakerPin = 3; //Buzzer: D3/D4

    // int touchSensor = 1; //Touch Sensor or Light Sensor: D0/D1

    int magneticSwitch = 2; // D2/D3

    int vibrationMotor = 0; //D0/D1

    int length = 107; //number of notes

    char notes[] = "fecffecffabffceagfeffecffecffabffceaaaaaddcfg fgaaaagg aaaaddcfg fgaaafgabaaceeeeccaa aceeeeeccadc dcgggg c"; //a space is a rest, so it won't buzz at that point

    int beats[] = {1,1,1,3,1,1,1,3,1,1,1,3,1,1,1,1,1,1,1,1,1,1,1,3,1,1,1,3,1,1,1,3,1,1,1,2,1,1,1,1,1,2,1,2,2,2,1,1,1,1,1,2,1,3,1,1,1,1,1,2,2,1,2,2,2,1,1,1,1,2,1,1,2,1,2,1,1,2,1,1,2,1,2,1,2,1,1,1,1,1,1,1,2,1,2,1,2,2,1,2,2,1,1,1,1,2,1};

    int tempo = 150; // Speed at which the notes (and beats) are played

    ////variables for calculating tone

    // int period;

    // int toneFrequency;

    struct color { uint8_t r; uint8_t g; uint8_t b; };

    void playTone(int tone, int duration) {

    int sensorState = digitalRead(magneticSwitch);

    if (sensorState == 1) {

    for (long i = 0; i < duration * 1000L; i += tone * 2) {

    // Play tone through Buzzer

    digitalWrite(speakerPin, HIGH);

    delayMicroseconds(tone);

    digitalWrite(speakerPin, LOW);

    delayMicroseconds(tone);

    // Vibrate through Vibration Motor

    digitalWrite(vibrationMotor, HIGH);

    } //for

    } else {

    // Play tone through Buzzer

    for (long i = 0; i < duration * 1000L; i += tone * 2) {

    digitalWrite(speakerPin, HIGH);

    delayMicroseconds(tone);

    digitalWrite(speakerPin, LOW);

    delayMicroseconds(tone);

    // Vibrate through Vibration Motor digitalWrite(vibrationMotor, LOW);

    } //for

    } //else

    } //playTone

    void playNote(char note, int duration) {

    char names[] = {'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C', 'D'}; //capital C for high c

    int tones[] = {1915, 1700, 1519, 1432, 1275, 1136, 1014, 956, 587}; //http://pasted.co/d1a629c1

    /*Tried to find ways to "create" more tones than the ones already present, such as high and low a instead of just the regular a*/

    // For each of the different names, other than the general note names, corresponding tones are presented //char names[] = {'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C', 'D','E','F','G','A'}; //capital C for high c

    //int tones[] = {1915, 1700, 1519, 1432, 1275, 1136, 1014, 956, 587, , , , }; //http://pasted.co/d1a629c1

    //char names[] = {'C7', 'D6', 'E5', 'f', 'g', 'a', 'b', 'C', 'D'};

    //int timeHigh = period / 2; // Calculating the tone using period value //int tones[] = {2093, 1175, 659}; //regular c = C7, lower c = C8, and higher c = C6 and so on; tones from: https://www.arduino.cc/en/Tutorial/ToneMelody?fro...

    //colors for notes color

    colors[] = {{255, 0, 0}, {244, 244, 66}, {66, 182, 244}, {0, 255, 0}, {143, 66, 244}, {244, 66, 241}, {146, 244, 66}, {0, 0, 255}, {64, 123, 235}}; //number don't actually matter, just each one need to be a different color

    //set bead LED color

    for (int i = 0; i < 9; i++) {

    if (names[i] == note) {

    Bean.setLed(colors[i].r, colors[i].g, colors[i].b);

    playTone(tones[i], duration);

    Bean.setLed(0, 0, 0);

    }

    }

    }

    void setup() {

    Serial.begin(57600);

    pinMode(magneticSwitch, INPUT);

    pinMode(vibrationMotor,OUTPUT); //vibration motor has to be 0 or lower pin

    pinMode(speakerPin, OUTPUT);

    }

    void loop() {

    int sensorState = digitalRead(magneticSwitch);

    Serial.println(sensorState);

    for (int i = 0; i < length && digitalRead(magneticSwitch) == 1; i++) { //if we reached the end the song will stop playing

    if (notes[i] == ' ') {

    Bean.setLed(0, 0, 0); delay(beats[i]*tempo); //rest

    } else {

    playNote(notes[i], beats[i]*tempo);

    } //pause between notes

    delay(tempo / 2);

    }

    }

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