Este proyecto consistió en crear una Rocola Digital a través de una programación de Arduino. Su función es muy simple y no es muy difícil de crear. La Rocola tiene muchas funciones interesantes, y una de ellas es que a través de una pantalla LCD se muestra el nombre de la canción que se esta reproduciendo, y que para cada canción se muestra un color distinto a través de un led RGB. Así mismo, a través de dos pulsadores puedes cambiar de canción (de izquierda a derecha o viceversa). Aquí te mostraré paso a paso en como crear uno de una forma sencilla y creativa.

Step 1: ¿Como Funciona?

Step 2: Circuito Armado Y Sus Materiales

¡Es necesario que tengas estos materiales para hacer que tu Rocola funcione!

- Arduino UNO

- Pantalla LCD 16x2 + Interfaz I2C

- Protoboard + Mini Protoboard

- Led RGB

- Passive Buzzer

- Jumpers Para Protoboard

- 2 Pulsadores Eléctricos

- Caja para el Circuito

Step 3: Diagrama Esquemático Del Circuito Electrónico

Step 4: Técnicas Para La Construcción De La Lámpara

Como te comentaba, el crear una Rocola no es tan difícil como aparenta. Aquí te dare unas técnicas que te serán útiles para poder hacer que tu Rocola funcione.

- Es necesario que consigas cada material que se muestra en "Step 2"

- Es necesario que tengas un "Arduino UNO", al igual que la aplicación para poder hacer que la programación funcione.

- Crea el circuito físico el cual te muestro en "Step 2".

- Luego de tener todo armado copia la programación el cual te mostraré en el ultimo paso.

- Por último, usa tu creatividad y consigue algo que tengas en tu casa para poder hacer la mejor Rocola de tu vida y no te olvides en decorarla a tu criterio.

Step 5: Código De La Rocola

//Creado por: Jorge Aragón //Incluir librerias para la pantalla LCD con interfaz I2C#include <Wire.h>#include <LiquidCrystal_I2C.h>LiquidCrystal_I2C lcd(0x27, 16, 2);const int buzzer = 11;int contador = 0;int R = 6;int G = 9;int B = 10;int subir;int bajar;/////////////////////////////MELODIAS///////////////////////////////#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/////////////////////////Wind Waker Theme///////////////////////////int WindWaker_melody1[] = {  NOTE_A5,4, NOTE_A5,8,    NOTE_A5,4, NOTE_D6,8, NOTE_F6,4, NOTE_E6,8, NOTE_D6,4, NOTE_C6,8,    NOTE_D6,4, NOTE_B5,8, NOTE_G5,4, NOTE_C6,8, NOTE_A5,8, NOTE_D6,8, NOTE_B5,8,    NOTE_C6,4, NOTE_A5,8, NOTE_G5,4, NOTE_D6,8, NOTE_B5,4, NOTE_C6,8,    NOTE_D6,4, NOTE_E6,8, NOTE_F6,8, NOTE_D6,8, NOTE_E6,8, NOTE_A5,4, NOTE_A5,8,    NOTE_A5,4, NOTE_D6,8, NOTE_F6,4, NOTE_E6,8, NOTE_D6,4, NOTE_C6,8,    NOTE_D6,4, NOTE_B5,8, NOTE_G5,4, NOTE_C6,8, NOTE_A5,8, NOTE_D6,8, NOTE_B5,8,    NOTE_C6,4, NOTE_D6,8, NOTE_F6,4, NOTE_A6,8, NOTE_B6,8, NOTE_F6,8, NOTE_C6,8,    NOTE_D6,2  };//////////////////////////Song of Storms////////////////////////////const int SongOfStorms_melody2[] PROGMEM = {  NOTE_D5,12, NOTE_F5,12, NOTE_D6,3,  NOTE_D5,12, NOTE_F5,12, NOTE_D6,3,  NOTE_E6,5, NOTE_F6,10, NOTE_E6,12, NOTE_F6,12, NOTE_E6,12, NOTE_C6,12, NOTE_A5,3,  NOTE_A5,6, NOTE_D5,6, NOTE_F5,12, NOTE_G5,12, NOTE_A5,2,  NOTE_A5,6, NOTE_D5,6, NOTE_F5,12    , NOTE_G5,12, NOTE_E5,2,  NOTE_D5,12, NOTE_F5,12, NOTE_D6,3,  NOTE_D5,12, NOTE_F5,12, NOTE_D6,3,  NOTE_E6,5, NOTE_F6,10, NOTE_E6,12, NOTE_F6,12, NOTE_E6,12, NOTE_C6,12, NOTE_A5,3,  NOTE_A5,6, NOTE_D5,6, NOTE_F5,12, NOTE_G5,12, NOTE_A5,2,  NOTE_A5,6, NOTE_D5,6, NOTE_F5,12, NOTE_G5,12, NOTE_E5,2};////////////////////////Minuet in G Petzold ////////////////////////int Minuet_melody3[] = {  NOTE_D5,4, NOTE_G4,8, NOTE_A4,8, NOTE_B4,8, NOTE_C5,8,   NOTE_D5,4, NOTE_G4,4, NOTE_G4,4,  NOTE_E5,4, NOTE_C5,8, NOTE_D5,8, NOTE_E5,8, NOTE_FS5,8,  NOTE_G5,4, NOTE_G4,4, NOTE_G4,4,  NOTE_C5,4, NOTE_D5,8, NOTE_C5,8, NOTE_B4,8, NOTE_A4,8,    NOTE_B4,4, NOTE_C5,8, NOTE_B4,8, NOTE_A4,8, NOTE_G4,8,  NOTE_FS4,4, NOTE_G4,8, NOTE_A4,8, NOTE_B4,8, NOTE_G4,8,  NOTE_A4,-2,  NOTE_D5,4, NOTE_G4,8, NOTE_A4,8, NOTE_B4,8, NOTE_C5,8,   NOTE_D5,4, NOTE_G4,4, NOTE_G4,4,  NOTE_E5,4, NOTE_C5,8, NOTE_D5,8, NOTE_E5,8, NOTE_FS5,8,    NOTE_G5,4, NOTE_G4,4, NOTE_G4,4,  NOTE_C5,4, NOTE_D5,8, NOTE_C5,8, NOTE_B4,8, NOTE_A4,8,   NOTE_B4,4, NOTE_C5,8, NOTE_B4,8, NOTE_A4,8, NOTE_G4,8,  NOTE_A4,4, NOTE_B4,8, NOTE_A4,8, NOTE_G4,8, NOTE_FS4,8,  NOTE_G4,-2,  NOTE_B5,4, NOTE_G5,8, NOTE_A5,8, NOTE_B5,8, NOTE_G5,8,  NOTE_A5,4, NOTE_D5,8, NOTE_E5,8, NOTE_FS5,8, NOTE_D5,8,  NOTE_G5,4, NOTE_E5,8, NOTE_FS5,8, NOTE_G5,8, NOTE_D5,8,  NOTE_CS5,4, NOTE_B4,8, NOTE_CS5,8, NOTE_A4,4,  NOTE_A4,8, NOTE_B4,8, NOTE_CS5,8, NOTE_D5,8, NOTE_E5,8, NOTE_FS5,8,  NOTE_G5,4, NOTE_FS5,4, NOTE_E5,4,   NOTE_FS5,4, NOTE_A4,4, NOTE_CS5,4,  NOTE_D5,-2,  NOTE_D5,4, NOTE_G4,8, NOTE_FS5,8, NOTE_G4,4,  NOTE_E5,4,  NOTE_G4,8, NOTE_FS4,8, NOTE_G4,4,  NOTE_D5,4, NOTE_C5,4, NOTE_B4,4,  NOTE_A4,8, NOTE_G4,8, NOTE_FS4,8, NOTE_G4,8, NOTE_A4,4,   NOTE_D4,8, NOTE_E4,8, NOTE_FS4,8, NOTE_G4,8, NOTE_A4,8, NOTE_B4,8,  NOTE_C5,4, NOTE_B4,4, NOTE_A4,4,  NOTE_B4,8, NOTE_D5,8, NOTE_G4,4, NOTE_FS4,4,  NOTE_G4,-2,  };//Tempo de las cancionesint notes=sizeof(WindWaker_melody1)/sizeof(WindWaker_melody1[0])/2; int notes2=sizeof(SongOfStorms_melody2)/sizeof(SongOfStorms_melody2[0])/2;int notes3 = sizeof(Minuet_melody3) / sizeof(Minuet_melody3[0]) / 2;int tempo = 120;int tempo2 = 160;int tempo3 = 140;int wholenote = (60000 * 4) / tempo;int wholenote2 = (60000 * 4) / tempo2;int wholenote3 = (60000 * 4) / tempo3;int divider = 0, noteDuration = 0;//Inicializacion del boton, pantalla LCD, y led RGBvoid setup(){  Wire.begin();  lcd.begin(16, 2);  lcd.clear();  lcd.backlight();  pinMode(buzzer, OUTPUT);  pinMode(4, INPUT_PULLUP);  pinMode(7, INPUT_PULLUP);  pinMode(R, OUTPUT);  pinMode(G, OUTPUT);  pinMode(B, OUTPUT);}void loop(){   if (contador == 0){    //Definir el color con el que se verá wind maker    analogWrite(R,0);    analogWrite(G,255);    analogWrite(B,255);    lcd.clear();    lcd.setCursor(0, 0);    lcd.print("WIND MAKER");    for (int thisNote = 0; thisNote < notes * 2; thisNote = thisNote + 2) {          //Calculo de la duración de las notas para la melodiaº 1    divider = WindWaker_melody1[thisNote + 1];    if (divider > 0) {         noteDuration = (wholenote) / divider;    } else if (divider < 0) {      // dotted notes are represented with negative durations!!      noteDuration = (wholenote) / abs(divider);      noteDuration *= 1.5; // increases the duration in half for dotted notes    }    tone(buzzer, WindWaker_melody1[thisNote], noteDuration*0.9);    // Wait for the specief duration before playing the next note.    subir = digitalRead(4);    bajar = digitalRead(7);    delay(noteDuration);        noTone(buzzer);    if (subir == LOW){    contador = 1;  }  if (bajar == LOW){    contador = 2;  }  if (contador != 0){    break;  }  }    } else if (contador == 1){    //Definir el color con el que se verá song of storms    analogWrite(R,255);    analogWrite(G,0);    analogWrite(B,255);    lcd.clear();    lcd.setCursor(0, 0);    lcd.print("SONG OF STORMS");    for (int thisNote = 0; thisNote < notes2 * 2; thisNote = thisNote + 2) {    // calculates the duration of each note    divider = pgm_read_word_near(SongOfStorms_melody2+thisNote + 1);    if (divider > 0) {      // regular note, just proceed      noteDuration = (wholenote2) / divider;    } else if (divider < 0) {          noteDuration = (wholenote2) / abs(divider);      noteDuration *= 1.5; // increases the duration in half for dotted notes    }    tone(buzzer, pgm_read_word_near(SongOfStorms_melody2+thisNote), noteDuration * 0.9);    subir = digitalRead(4);    bajar = digitalRead(7);    delay(noteDuration);    noTone(buzzer);    if (subir == LOW){    contador = 2;  }  if (bajar == LOW){    contador = 0;  }  if (contador != 1){    break;  }  }      } else if (contador == 2){    //Definir el color con el que se verá Minuet    analogWrite(R,255);    analogWrite(G,255);    analogWrite(B,0);    lcd.clear();    lcd.setCursor(0, 0);    lcd.print("MINUET IN G");    lcd.setCursor(0, 1);    lcd.print("PETZOLD");    for (int thisNote = 0; thisNote < notes3 * 2; thisNote = thisNote + 2) {            divider = Minuet_melody3[thisNote + 1];    if (divider > 0) {         noteDuration = (wholenote3) / divider;    } else if (divider < 0) {            noteDuration = (wholenote3) / abs(divider);      noteDuration *= 1.5; // increases the duration in half for dotted notes    }        tone(buzzer, Minuet_melody3[thisNote], noteDuration * 0.9);    subir = digitalRead(4);    bajar = digitalRead(7);    delay(noteDuration);    noTone(buzzer);    if (subir == LOW){    contador = 0;  }    subir = digitalRead(4);    bajar = digitalRead(7);  if (bajar == LOW){    contador = 1;  }  if (contador != 2){    break;  }  }  }  }