• 6th step : keep trying

    sarah • 01/09/2024 at 10:15 • 0 comments

    So even after all of our effort we couldn't manage to make it work for our big LED matrix, so we went back to the simple 8x8 one. We then tried to link the speaker to the Arduino board with the LED matrix and the accelerometer, but we ran into another problem. When we tried to combine the code, which works well separately, the LED matrix wouldn't work and only the speaker would. 

    This is the code we used to combine the two, it compiled well but only the speaker worked. 

    #include <LedControl.h>
#include <Wire.h>
 
 
#define DEVICE (0x53)   //ADXL345 device address
#define TO_READ (6)
 
#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
#define REST      0
 
 
// change this to make the song slower or faster
int tempo = 200;
 
// change this to whichever pin you want to use
int buzzer = 11;
 
 
// notes of the moledy followed by the duration.
// a 4 means a quarter note, 8 an eighteenth , 16 sixteenth, so on
// !!negative numbers are used to represent dotted notes,
// so -4 means a dotted quarter note, that is, a quarter plus an eighteenth!!
int melody[] = {
 
  // Super Mario Bros theme
  // Score available at https://musescore.com/user/2123/scores/2145
  // Theme by Koji Kondo
 
 
  NOTE_E5,8, NOTE_E5,8, REST,8, NOTE_E5,8, REST,8, NOTE_C5,8, NOTE_E5,8, //1
  NOTE_G5,4, REST,4, NOTE_G4,8, REST,4,
  NOTE_C5,-4, NOTE_G4,8, REST,4, NOTE_E4,-4, // 3
  NOTE_A4,4, NOTE_B4,4, NOTE_AS4,8, NOTE_A4,4,
  NOTE_G4,-8, NOTE_E5,-8, NOTE_G5,-8, NOTE_A5,4, NOTE_F5,8, NOTE_G5,8,
  REST,8, NOTE_E5,4,NOTE_C5,8, NOTE_D5,8, NOTE_B4,-4,
  NOTE_C5,-4, NOTE_G4,8, REST,4, NOTE_E4,-4, // repeats from 3
  NOTE_A4,4, NOTE_B4,4, NOTE_AS4,8, NOTE_A4,4,
  NOTE_G4,-8, NOTE_E5,-8, NOTE_G5,-8, NOTE_A5,4, NOTE_F5,8, NOTE_G5,8,
  REST,8, NOTE_E5,4,NOTE_C5,8, NOTE_D5,8, NOTE_B4,-4,
 
 
  REST,4, NOTE_G5,8, NOTE_FS5,8, NOTE_F5,8, NOTE_DS5,4, NOTE_E5,8,//7
  REST,8, NOTE_GS4,8, NOTE_A4,8, NOTE_C4,8, REST,8, NOTE_A4,8, NOTE_C5,8, NOTE_D5,8,
  REST,4, NOTE_DS5,4, REST,8, NOTE_D5,-4,
  NOTE_C5,2, REST,2,
 
  REST,4, NOTE_G5,8, NOTE_FS5,8, NOTE_F5,8, NOTE_DS5,4, NOTE_E5,8,//repeats from 7
  REST,8, NOTE_GS4,8, NOTE_A4,8, NOTE_C4,8, REST,8, NOTE_A4,8, NOTE_C5,8, NOTE_D5,8,
  REST,4, NOTE_DS5,4, REST,8, NOTE_D5,-4,
  NOTE_C5,2, REST,2,
 
  NOTE_C5,8,...
    Read more »

  • 5th step : add another output ( the speaker )

    sarah • 01/09/2024 at 09:46 • 0 comments

    While we were trying to figure out how to display it on a 4x8x32 LED matrix we decided to take a little break and try and wire the speaker to the Arduino board using a resistance. The only issue we had with this was the quality of our speaker. We ordered a cheap thin speaker and we had to be careful while handling it because the wire could easily brake. Also the quality of the speaker wasn't very good, so the sound wasn't loud enough, if you're doing this project i recommend using a better speaker. 

    We used this website to find the melody for the speaker.

    /* 
  Pink Panther theme
  Connect a piezo buzzer or speaker to pin 11 or select a new pin.
  More songs available at https://github.com/robsoncouto/arduino-songs                                            
                                              
                                              Robson Couto, 2019
*/
#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
#define REST      0


// change this to make the song slower or faster
int tempo = 120;

// change this to whichever pin you want to use
int buzzer = 11;

// notes of the moledy followed by the duration.
// a 4 means a quarter note, 8 an eighteenth , 16 sixteenth, so on
// !!negative numbers are used to represent dotted notes,
// so -4 means a dotted quarter note, that is, a quarter plus an eighteenth!!
int melody[] = {

  // Pink Panther theme
  // Score available at https://musescore.com/benedictsong/the-pink-panther
  // Theme by Masato Nakamura, arranged by Teddy Mason

  REST,2, REST,4, REST,8, NOTE_DS4,8, 
  NOTE_E4,-4, REST,8, NOTE_FS4,8, NOTE_G4,-4, REST,8, NOTE_DS4,8,
  NOTE_E4,-8, NOTE_FS4,8,  NOTE_G4,-8, NOTE_C5,8, NOTE_B4,-8, NOTE_E4,8, NOTE_G4,-8, NOTE_B4,8,   
  NOTE_AS4,2, NOTE_A4,-16, NOTE_G4,-16, NOTE_E4,-16, NOTE_D4,-16, 
  NOTE_E4,2, REST,4, REST,8, NOTE_DS4,4,

  NOTE_E4,-4, REST,8, NOTE_FS4,8, NOTE_G4,-4, REST,8, NOTE_DS4,8,
  NOTE_E4,-8, NOTE_FS4,8,  NOTE_G4,-8, NOTE_C5,8, NOTE_B4,-8, NOTE_G4,8, NOTE_B4,-8, NOTE_E5,8,
  NOTE_DS5,1,   
  NOTE_D5,2, REST,4, REST,8, NOTE_DS4,8, 
  NOTE_E4,-4, REST,8, NOTE_FS4,8, NOTE_G4,-4, REST,8, NOTE_DS4,8,
  NOTE_E4,-8, NOTE_FS4,8,  NOTE_G4,-8, NOTE_C5,8, NOTE_B4,-8, NOTE_E4,8, NOTE_G4,-8, NOTE_B4,8,   
  
  NOTE_AS4,2, NOTE_A4,-16, NOTE_G4,-16, NOTE_E4,-16, NOTE_D4,-16, 
  NOTE_E4,-4, REST,4,
  REST,4, NOTE_E5,-8, NOTE_D5,8, NOTE_B4,-8, NOTE_A4,8, NOTE_G4,-8, NOTE_E4,...
    Read more »

  • 4th step : Try to make it on the 3x8x32 LED matrix

    sarah • 01/09/2024 at 09:37 • 0 comments

    We first tried to keep using the code we have and that works with the small LED matrix by only changing the width and a few other details of the code but that didn't work out. We spent a very long time on this because we couldn't understand why our code wouldn't work anymore. We changed the wiring multiple times thinking that was maybe our problem but it apparently wasn't. Down here is the failed code we tried for our LED matrix and the results on the LED matrix.

    #include <LedControl.h>
#include <Wire.h>
 
#define DEVICE (0x53)   // ADXL345 device address
#define TO_READ (6)      // num of bytes we are going to read (two bytes for each axis)
 
byte buff[TO_READ];      // 6 bytes buffer for saving data read from the device
 
int MATRIX_WIDTH = 8;
int MATRIX_HEIGHT = 32;  // Change to 32 for an 8x32 matrix
 
LedControl lc = LedControl(12, 11, 10, 1); // DIN, CLK, CS, NRDEV
unsigned long delaytime = 50;
int x_key = A1;
int y_key = A0;
int x_pos;
int y_pos;
 
class Grain
{
public:
  int x = 0;
  int y = 0;
  int mass = 1;
};
Grain *g;
 
void setup()
{
  g = new Grain();
 
  ClearDisplay();
 
  Wire.begin();
  Serial.begin(9600);
 
  writeTo(DEVICE, 0x2D, 0);
  writeTo(DEVICE, 0x2D, 16);
  writeTo(DEVICE, 0x2D, 8);
}
 
void loop()
{
  int regAddress = 0x32;
  int x, y;
 
  readFrom(DEVICE, regAddress, TO_READ, buff);
 
  x = (((int)buff[1]) << 8) | buff[0];
  y = (((int)buff[3]) << 8) | buff[2];
 
  x = map(x, -300, 300, 0, MATRIX_WIDTH);
  y = map(y, -300, 300, 0, MATRIX_HEIGHT);  // Adjust mapping for 8x32 matrix
 
  Serial.print("X: ");
  Serial.print(x);
  Serial.print("   Y: ");
  Serial.print(y);
  Serial.print("\n");
 
  ClearDisplay();
  g->x = x;
  g->y = y;
  lc.setLed(0, g->x, g->y, true);
 
  delay(10);
}
 
void ClearDisplay()
{
  int devices = lc.getDeviceCount();
 
  for (int address = 0; address < devices; address++)
  {
    lc.shutdown(address, false);
    lc.setIntensity(address, 1);
    lc.clearDisplay(address);
  }
}
 
void writeTo(int device, byte address, byte val)
{
  Wire.beginTransmission(device);
  Wire.write(address);
  Wire.write(val);
  Wire.endTransmission();
}
 
void readFrom(int device, byte address, int num, byte buff[])
{
  Wire.beginTransmission(device);
  Wire.write(address);
  Wire.endTransmission();
 
  Wire.beginTransmission(device);
  Wire.requestFrom(device, num);
 
  int i = 0;
  while (Wire.available())
  {
    buff[i] = Wire.read();
    i++;
  }
  Wire.endTransmission();
}

  • 3rd step : try with an 8x8 LED matrix

    sarah • 12/08/2023 at 15:21 • 0 comments

    While waiting for our big LED matrix, we decided that we would try it with only one to begin with. This was, without a doubt, our hardest step, we spent more than 10 hours on this, we tried many codes, and we downloaded many libraries, but nothing seemed to work the way we wanted it to. We were almost discouraged, and wondered if we should change our project and do something more our speed. But we kept trying, and finally we managed to have a code that works and that does what we wants it to do ( with the help of this website ). Now we have to change it to accommodate our 3x8x32 LED matrix instead of a simple 8x8.

    #include <LedControl.h>
#include <Wire.h>


#define DEVICE (0x53)   //ADXL345 device address
#define TO_READ (6)     //num of bytes we are going to read (two bytes for each axis)

byte buff[TO_READ] ;    //6 bytes buffer for saving data read from the device
char str[512];          //string buffer to transform data before sending it

int MATRIX_WIDTH = 8;
LedControl lc = LedControl(12, 11, 10, 1); // DIN, CLK, CS, NRDEV
unsigned long delaytime = 50;
int x_key = A1;
int y_key = A0;
int x_pos;
int y_pos;


// object that represents a single light location
// future update with gravity
class Grain
{
  public:
    int x = 0;
    int y = 0;
    int mass = 1;
};
Grain *g;


void setup()
{
  // set up a grain object
  g = new Grain();

  ClearDisplay();

  Wire.begin();        // join i2c bus (address optional for master)
  Serial.begin(9600);  // start serial for output

  //Turning on the ADXL345
  writeTo(DEVICE, 0x2D, 0);
  writeTo(DEVICE, 0x2D, 16);
  writeTo(DEVICE, 0x2D, 8);
}


void loop()
{
  // The first axis-acceleration-data register
  int regAddress = 0x32;
  int x, y, z;

  readFrom(DEVICE, regAddress, TO_READ, buff); //read the acceleration data from ADXL345

  // Combine the two bytes of each direction
  // Least significant bit first
  x = (((int)buff[1]) << 8) | buff[0];
  y = (((int)buff[3]) << 8) | buff[2];
  z = (((int)buff[5]) << 8) | buff[4];

  // Convert the values into values that can be represented on the matrix
  x = map(x, -300, 300, 0, 8);
  y = map(y, -300, 300, 0, 8);
  z = map(z, -300, 300, 0, 8);

  //we send the x y z values as a string to the serial port
  Serial.print("X: ");
  Serial.print(x);
  Serial.print("   Y: ");
  Serial.print(y);
  Serial.print("   Z: ");
  Serial.print(z);
  Serial.print("\n");

  ClearDisplay();
  // assign the grain to this location
  g->x = x;
  g->y = y;
  lc.setLed(0, g->x, g->y, true);


  //add some delay between each update
  delay(10);
}


void ClearDisplay()
{
  // sets up the lcd display
  int devices = lc.getDeviceCount();

  for (int address = 0; address < devices; address++)
  {
    lc.shutdown(address, false);
    lc.setIntensity(address, 1);
    lc.clearDisplay(address);
  }
}


//Writes val to address register on device
void writeTo(int device, byte address, byte val) 
{
  Wire.beginTransmission(device); //start transmission to device
  Wire.write(address);        // send register address
  Wire.write(val);        // send value to write
  Wire.endTransmission(); //end transmission
}


//reads num bytes starting from address register on device in to buff array
void readFrom(int device, byte address, int num, byte buff[]) 
{
  Wire.beginTransmission(device); //start transmission to device
  Wire.write(address);        //sends address to read from
  Wire.endTransmission(); //end transmission

  Wire.beginTransmission(device); //start transmission to device
  Wire.requestFrom(device, num);    // request 6 bytes from device

  int i = 0;
  while (Wire.available())   //device may send less than requested (abnormal)
  {
    buff[i] = Wire.read(); // receive a byte
    i++;
  }
  Wire.endTransmission(); //end transmission
}

  • 2nd step : coding the accelerometer

    sarah • 12/08/2023 at 15:16 • 0 comments

    The first thing we did, even before touching the LED matrix, we tried to code the accelerometer with Arduino so that it will accurately follow our movement. We tried many codes, not all of them worked and sometimes we would find a code that would work but since we didn't understand them we choose not to use them. So, we tried to write it ourselves, and with the help of this websites and YouTube videos (  here and here) , we managed to code our accelerometer.

    #include <Wire.h>  

int ADXL345 = 0x52; 

float X_out, Y_out, Z_out;  // Outputs

void setup() {
  Serial.begin(9600); 
  Wire.begin(); 
  Wire.beginTransmission(ADXL345); 
  Wire.write(0x2D);
  Wire.write(8);
  Wire.endTransmission();
  delay(100);
}

void loop() {
  // === Read acceleromter data === //
  Wire.beginTransmission(ADXL345);
  Wire.write(0x32); 
  Wire.endTransmission(false);
  Wire.requestFrom(ADXL345, 6, true); 
  X_out = ( Wire.read()| Wire.read() << 8); 
  X_out = X_out/64;#+-8 sensitivity
  Y_out = ( Wire.read()| Wire.read() << 8); // Y-axis value
  Y_out = Y_out/64;
  Z_out = ( Wire.read()| Wire.read() << 8); // Z-axis value
  Z_out = Z_out/64;

  Serial.print("Xa= ");
  Serial.print(X_out);
  Serial.print("   Ya= ");
  Serial.print(Y_out);
  Serial.print("   Za= ");
  Serial.println(Z_out);
}

  • 1st step: choosing our components

    sarah • 12/08/2023 at 14:57 • 0 comments

    We first started by finding the composants that we needed in order to do our project. An accelerometer was the obvious choice as we needed something that will follow our movement. Then, based on what was already at our disposal, we chose to go with an LED matrix instead of joining numerous LEDs together. But, it was obviious that an 8x8 LED matrix wasn't going to be large enough to follow our movement correctly, so we ordered an 3x8x32 matrix and that should be more than enough space. Since we needed another output, we also ordered a speaker, we want the sound/music to change based on our movement ( ex : we move to the right -> the music gets higher/louder ; we move to the left -> the music gets lower/quieter ).