BPT Arduino

debug_mode.js

  // Modo Debug
    if (debugMode) {
      console.log("**************");
      console.log("Ask($): " + newChange.ask);
      console.log("Bid($): " + newChange.bid);
      console.log("Last($): " + newChange.last);
      console.log("--------------");
      console.log("Conversion Rate: "+euroRate);
      console.log("Currency selected: "+currency);      
      console.log("--------------");
      console.log("Ask(€): " +(newChange.ask*euroRate).toFixed(2));
      console.log("Bid(€): " +(newChange.bid*euroRate).toFixed(2));
      console.log("Last(€): " +(newChange.last*euroRate).toFixed(2));
      console.log("**************");               
    };

dependencias_y_hardware.js

var five = require("johnny-five");
var Firebase = require("firebase");
var board = new five.Board();

board.on("ready", function() {
  
  // LCD con interfaz I2C
  var lcd = new five.LCD({
      controller: "LCM1602",
      pins: ["A5", "A4"],
      rows: 4,
      cols: 20
  });

}); // board

imprimiendo_datos.js

myFirebaseRef.on("value", function(snapshot) {
  var newChange = snapshot.val();

    // Si la moneda elegida es dolares.
    if (currency == "dollar") {
      lcd.clear();
      lcd.cursor(0, 0).print("==== BITCOIN ($) ===");
      lcd.cursor(1, 0).print("Ask: "+newChange.ask+"$");
      lcd.cursor(2, 0).print("Bid: "+newChange.bid+"$");
      lcd.cursor(3, 0).print("Last: "+newChange.last+"$");
    /*
        Si la moneda elegida es Euros
        Se multiplica el valor por el cambio de Dolar/euro... y luego se redondea a dos decimales
    */
    } else if(currency == "euro"){
      lcd.clear();
      lcd.cursor(0, 0).print("==== BITCOIN (:euro:) ===");
      lcd.cursor(1, 0).print("Ask: "+(newChange.ask*euroRate).toFixed(2)+":euro:"); 
      lcd.cursor(2, 0).print("Bid: "+(newChange.bid*euroRate).toFixed(2)+":euro:");
      lcd.cursor(3, 0).print("Last: "+(newChange.last*euroRate).toFixed(2)+":euro:");      
    // En caso de monedas no reconocidas, se muestra el siguiente error.
    } else{
      lcd.clear();
      lcd.cursor(0, 0).print("===== BITCOIN (X) ====");
      lcd.cursor(1, 0).print("ERROR!! CURRENCY.");
      lcd.cursor(2, 0).print("Try Dollar or Euro.");
      lcd.cursor(0, 0).print("====================");
    };

variables_globales.js

// Ajustar el modo Debug
var debugMode = false;
// Ajustar la moneda
var currency = "dollar"; // "dollar" or "euro"
// Ajustar la tasa de cambio Dolar -> Euro
var euroRate = 0.89;
// Base de datos con la información de los Bitcoins.
var myFirebaseRef = new Firebase("https://publicdata-bitcoin.firebaseio.com/");