Xwork's Blog

package com.mdev.ledrescalc;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;

public class MainActivity extends Activity {
EditText ETVin, ETVLed, ETILed, ETNLed, ETResult;
Button BtnCalc;
RadioButton RConexion1, RConexion2;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		ETVin = findViewById(R.id.ETVin);
		ETVLed = findViewById(R.id.ETVLed);
		ETILed = findViewById(R.id.ETILed);
		ETNLed = findViewById(R.id.ETNLed);
		ETResult = findViewById(R.id.ETResult);
		BtnCalc = findViewById(R.id.BtnCalc);
		RConexion1 = findViewById(R.id.Conexion1);
		RConexion2 = findViewById(R.id.Conexion2);
		BtnCalc.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				ETResult.setText(CalculateRes(ETVin.getText().toString(),ETVLed.getText().toString(),ETILed.getText().toString(),ETNLed.getText().toString(),RConexion1.isChecked()));
			}
		});
	}

	private String CalculateRes(String VIn, String VLed, String ILed, String NLed, boolean Serie)
	{
		double Corriente = 0;
		double DropVol = 0;
		double TotalRes = 0;
		double TotalVolt = 0;
		double Potencia = 0;
		double Vin = Double.parseDouble(VIn);
		double Vled = Double.parseDouble(VLed);
		double Iled = Double.parseDouble(ILed);
		double Nled = Double.parseDouble(NLed);
		if (Serie)
		{
			TotalVolt = Vled * Nled;
			if (Vin < TotalVolt){
				return "El voltaje es bajo";
			}
			Corriente = Iled;
			DropVol = Vin - TotalVolt;
			TotalRes = DropVol/Corriente;
			Potencia = Corriente * DropVol;
			return "Se necesita una resistencia de "+ TotalRes +" ohm(s) de una potencia de superior a "+ Potencia + " Watt(s)";
		}
		else{
			TotalVolt = Vled;
			if (Vin < TotalVolt){
				return "El voltaje es bajo";
			}
			Corriente = Iled * Nled;
			DropVol = Vin - TotalVolt;
			TotalRes = DropVol/Corriente;
			Potencia = Corriente * DropVol;
			return "Se necesita una resistencia de "+ TotalRes +" ohm(s) de una potencia de superior a "+ Potencia + " Watt(s)";
		}
	}
}

• Donde R es la resistencia que se mide en Ohm y su símbolo es "Ω".
• V es el voltaje que se mide en volt y su símbolo es "V".
• I es la corriente que se mide en Ampere y su símbolo es "A".

• P  es la potencia que se mide en Watts y su símbolo es "W".
• V es el voltaje que se mide en Volts y su símbolo es "V".
• I es la corriente que se mide en Ampere y su símbolo es "A".

package com.mdev.clockview;

import android.app.Activity;
import android.app.AlertDialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Build;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Handler;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.UUID;
import java.lang.reflect.Method;
import java.util.Set;
import java.util.Calendar;

import static com.mdev.clockview.R.layout.paired_devices_list;

public class MainActivity extends Activity {

 BluetoothAdapter myBluetoothAdapter = null;
 Button BtnConnect, BtnOnOff, BtnSecondsShow, BtnSyncHour, BtnChangeFormat,BtnDisconnect;
 SeekBar SkBright;
 TextView TxtArduinoRec, TxtBrigthValue;

 String address = null;
 private ProgressDialog progress;
 BluetoothSocket btSocket = null;
 private boolean isBtConnected = false;
 private static final UUID myUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
 final int RECEIVE_MESSAGE = 1;
 private StringBuilder sb = new StringBuilder();
 private ConnectedThread mConnectedThread;
 Handler h;

 private Set<BluetoothDevice> pairedDevices;
 ListView myListView;
 ArrayAdapter BTArrayAdapter;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  //setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

  setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
  BtnConnect = (Button)findViewById(R.id.BtnConnect);
  myListView = (ListView)findViewById(R.id.BTList);
  TxtArduinoRec = (TextView)findViewById(R.id.TxtArduinoReturn);
  BtnOnOff = (Button)findViewById(R.id.BtnOn);
  BtnSecondsShow = (Button)findViewById(R.id.BtnShowS);
  BtnSyncHour = (Button)findViewById(R.id.BtnSync);
  BtnChangeFormat = (Button)findViewById(R.id.BtnFormat);
  BtnDisconnect = (Button)findViewById(R.id.BtnDisconnect);
  SkBright = (SeekBar)findViewById(R.id.SKBrillo);
  TxtBrigthValue = (TextView)findViewById(R.id.txtSeekValue);

  myBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

  if (myBluetoothAdapter == null) {
   msg("El bluetooth no es soportado por este dispositivo");
  }
  else {
   msg("Esperando la conexion");
  }
  SkBright.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener(){

   @Override
   public void onProgressChanged(SeekBar seekBar, int progress,
            boolean fromUser) {
    TxtBrigthValue.setText("Brillo: " + String.valueOf(progress));
    if (isBtConnected)
    {
     String result = String.format(">SETB%1$02d", progress);
     mConnectedThread.write(result);
    }
   }

   @Override
   public void onStartTrackingTouch(SeekBar seekBar) {
   }

   @Override
   public void onStopTrackingTouch(SeekBar seekBar) {

   }
  });
  BtnConnect.setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View view) {
    if (!myBluetoothAdapter.isEnabled()) {
     Intent turnOnIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
     startActivityForResult(turnOnIntent, 1);
    }else{
     showBTDialog();
    }
   }
  });
  BtnOnOff.setOnClickListener(new View.OnClickListener()
  {
   @Override
   public void onClick(View view){
    if (isBtConnected)
    {
     mConnectedThread.write(">SCRA");
    }
   }
  });

  BtnSecondsShow.setOnClickListener(new View.OnClickListener()
  {
   @Override
   public void onClick(View view){
    if (isBtConnected)
    {
     mConnectedThread.write(">DISS");
    }
   }
  });

  BtnSyncHour.setOnClickListener(new View.OnClickListener()
  {
   @Override
   public void onClick(View view){
    if (isBtConnected)
    {
     mConnectedThread.write(BuildHour(true));
    }
   }
  });

  BtnChangeFormat.setOnClickListener(new View.OnClickListener()
  {
   @Override
   public void onClick(View view){
    if (isBtConnected)
    {
     mConnectedThread.write(">SETF");
    }
   }
  });
  BtnDisconnect.setOnClickListener(new View.OnClickListener()
  {
   @Override
   public void onClick(View view){
    if (isBtConnected)
    {
     Disconnect();
    }
   }
  });
  //encargado de procesar los mensajes.
  h = new Handler() {
   public void handleMessage(android.os.Message msg) {
    switch (msg.what)
    {
     case RECEIVE_MESSAGE:
      byte[] readBuf = (byte[]) msg.obj;
      String strIncom = new String(readBuf, 0, msg.arg1);
      sb.append(strIncom);
      int endOfLineIndex = sb.indexOf("\r\n");
      if (endOfLineIndex > 0)
      {
       String sbprint = sb.substring(0, endOfLineIndex);
       sb.delete(0, sb.length());
       TxtArduinoRec.setText("Data from Arduino: " + sbprint);
      }
     break;
    }
   };
  };

 }
 private void msg(String s)
 {
  Toast.makeText(getApplicationContext(),s,Toast.LENGTH_LONG).show();
 }
 private String BuildHour(boolean ForArduino){
  //>SETH2016122119001004
  //>SETHAAAAMMDDHHMMSSWW
  Calendar c = Calendar.getInstance();
  int DiaSemana = c.get(Calendar.DAY_OF_WEEK);
  int Anio = c.get(Calendar.YEAR);
  int Mes = c.get(Calendar.MONTH);
  int Dia = c.get(Calendar.DAY_OF_MONTH);
  int Horas = c.get(Calendar.HOUR_OF_DAY);
  int Minutos = c.get(Calendar.MINUTE);
  int Segundos = c.get(Calendar.SECOND);
  String Fecha = null;
  if (ForArduino == true){
   Fecha = String.format(">SETH%1$04d%2$02d%3$02d%4$02d%5$02d%6$02d%7$02d",
     Anio, Mes + 1, Dia, Horas, Minutos,Segundos, DiaSema);
   msg(Fecha);
  }else {
   Fecha = String.format("%1$04d/%2$02d/%3$02d - %4$02d:%5$02d:%6$02d",
     Anio, Mes + 1, Dia, Horas, Minutos,Segundos);
  }
  return Fecha;
 }

 private void Disconnect()
 {
  if (btSocket!=null)
  {
   try
   {
    btSocket.close();
    isBtConnected = false;
   }
   catch (IOException e)
   { msg("Error");}
  }
 }

 private AdapterView.OnItemClickListener myListClickListener = new AdapterView.OnItemClickListener()
 {
  public void onItemClick (AdapterView<?> av, View v, int arg2, long arg3) {
   if (myBluetoothAdapter.isEnabled()) {
    String info = ((TextView) v).getText().toString();
    address = info.substring(info.length() - 17);
    msg(info);

   } else {
    msg("El Bluetooth debe de estar encendido.");
   }
  }
 };


 public void showBTDialog() {
  final AlertDialog.Builder popDialog = new AlertDialog.Builder(this);
  final LayoutInflater inflater = (LayoutInflater) this.getSystemService(LAYOUT_INFLATER_SERVICE);
  final View Viewlayout = inflater.inflate(paired_devices_list, (ViewGroup) findViewById(R.id.bt_list));

  popDialog.setTitle("Dispositivos Bluetooth:");
  popDialog.setView(Viewlayout);

  myListView = (ListView) Viewlayout.findViewById(R.id.BTList);
  BTArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1);
  myListView.setAdapter(BTArrayAdapter);
  pairedDevices = myBluetoothAdapter.getBondedDevices();

  for(BluetoothDevice device : pairedDevices)
   BTArrayAdapter.add(device.getName()+ "\n" + device.getAddress());

  myListView.setOnItemClickListener(myListClickListener);
  // Button OK
  popDialog.setPositiveButton("Conectar",
    new DialogInterface.OnClickListener() {
     public void onClick(DialogInterface dialog, int which) {
      if (address != null)
      {
       new ConnectBT().execute();
      }
      dialog.dismiss();
     }
    });
  popDialog.create();
  popDialog.show();

 }
 private class ConnectedThread extends Thread {
  private final InputStream mmInStream;
  private final OutputStream mmOutStream;

  public ConnectedThread(BluetoothSocket socket) {
   InputStream tmpIn = null;
   OutputStream tmpOut = null;
   try {
    tmpIn = socket.getInputStream();
    tmpOut = socket.getOutputStream();
   } catch (IOException e) { }

   mmInStream = tmpIn;
   mmOutStream = tmpOut;
  }

  public void run() {
   byte[] buffer = new byte[256];
   int bytes;
   while (true) {
    try {
     bytes = mmInStream.read(buffer);
     h.obtainMessage(RECEIVE_MESSAGE, bytes, -1, buffer).sendToTarget();
    } catch (IOException e) {
     break;
    }
   }
  }

  public void write(String message) {
   byte[] msgBuffer = message.getBytes();
   try {
    mmOutStream.write(msgBuffer);
   } catch (IOException e) {
    msg("Error al enviar: " + e.getMessage());

   }
  }
 }

 private class ConnectBT extends AsyncTask<Void, Void, Void>
 {
  private boolean ConnectSuccess = true;

  @Override
  protected void onPreExecute()
  {
   progress = ProgressDialog.show(MainActivity.this, "Conectando ("+ address +")...", "Espera...!!!");
  }

  @Override
  protected Void doInBackground(Void... devices)
  {
   try
   {
    if (btSocket == null || !isBtConnected)
    {
     myBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
     BluetoothAdapter.getDefaultAdapter().cancelDiscovery();
     BluetoothDevice dispositivo = myBluetoothAdapter.getRemoteDevice(address);
     btSocket = createBluetoothSocket(dispositivo);
     btSocket.connect();
    }
   }
   catch (IOException e)
   {
    ConnectSuccess = false;
   }
   return null;
  }

  private BluetoothSocket createBluetoothSocket(BluetoothDevice device) throws IOException {
   if(Build.VERSION.SDK_INT >= 10){
    try {
     final Method  m = device.getClass().getMethod("createInsecureRfcommSocketToServiceRecord", new Class[] { UUID.class });
     return (BluetoothSocket) m.invoke(device, myUUID);
    } catch (Exception e) {
     msg("No se pudo crear la conexion");
    }
   }
   return  device.createRfcommSocketToServiceRecord(myUUID);
  }

  @Override
  protected void onPostExecute(Void result)
  {
   super.onPostExecute(result);

   if (!ConnectSuccess)
   {
    msg("La conexion falló, intentelo de nuevo");
    isBtConnected = false;
   }
   else
   {
    msg("Conectado.");
    isBtConnected = true;
    mConnectedThread = new ConnectedThread(btSocket);
    mConnectedThread.start();
   }
   progress.dismiss();
  }
 }
}

package com.mdev.clockview;

import android.app.Activity;
import android.app.AlertDialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Build;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Handler;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.UUID;
import java.lang.reflect.Method;
import java.util.Set;
import java.util.Calendar;

import static com.mdev.clockview.R.layout.paired_devices_list;

public class MainActivity extends Activity {

	BluetoothAdapter myBluetoothAdapter = null;
	Button BtnConnect, BtnOnOff, BtnSecondsShow, BtnSyncHour, BtnChangeFormat,BtnDisconnect;
	SeekBar SkBright;
	TextView TxtArduinoRec, TxtBrigthValue;

	String address = null;
	private ProgressDialog progress;
	BluetoothSocket btSocket = null;
	private boolean isBtConnected = false;
	private static final UUID myUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
	final int RECEIVE_MESSAGE = 1;
	private StringBuilder sb = new StringBuilder();
	private ConnectedThread mConnectedThread;
	Handler h;

	private Set<BluetoothDevice> pairedDevices;
	ListView myListView;
	ArrayAdapter BTArrayAdapter;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		//setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
		setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
		BtnConnect = (Button)findViewById(R.id.BtnConnect);
		myListView = (ListView)findViewById(R.id.BTList);
		TxtArduinoRec = (TextView)findViewById(R.id.TxtArduinoReturn);
		BtnOnOff = (Button)findViewById(R.id.BtnOn);
		BtnSecondsShow = (Button)findViewById(R.id.BtnShowS);
		BtnSyncHour = (Button)findViewById(R.id.BtnSync);
		BtnChangeFormat = (Button)findViewById(R.id.BtnFormat);
		BtnDisconnect = (Button)findViewById(R.id.BtnDisconnect);
		SkBright = (SeekBar)findViewById(R.id.SKBrillo);
		TxtBrigthValue = (TextView)findViewById(R.id.txtSeekValue);

		myBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

		if (myBluetoothAdapter == null) {
			msg("El bluetooth no es soportado por este dispositivo");
		}
		else {
			msg("Esperando la conexion");
		}
		SkBright.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener(){

			@Override
			public void onProgressChanged(SeekBar seekBar, int progress,
										  boolean fromUser) {
				TxtBrigthValue.setText(String.valueOf(progress));
				if (isBtConnected)
				{
					String result = String.format(">SETB%1$02d", progress);
					mConnectedThread.write(result);
				}
			}

			@Override
			public void onStartTrackingTouch(SeekBar seekBar) {
			}

			@Override
			public void onStopTrackingTouch(SeekBar seekBar) {

			}
		});
		BtnConnect.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View view) {
				if (!myBluetoothAdapter.isEnabled()) {
					Intent turnOnIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
					startActivityForResult(turnOnIntent, 1);
				}else{
					showBTDialog();
				}
			}
		});
		BtnOnOff.setOnClickListener(new View.OnClickListener()
		{
			@Override
			public void onClick(View view){
				if (isBtConnected)
				{
					mConnectedThread.write(">SCRA");
				}
			}
		});

		BtnSecondsShow.setOnClickListener(new View.OnClickListener()
		{
			@Override
			public void onClick(View view){
				if (isBtConnected)
				{
					mConnectedThread.write(">DISS");
				}
			}
		});

		BtnSyncHour.setOnClickListener(new View.OnClickListener()
		{
			@Override
			public void onClick(View view){
				if (isBtConnected)
				{
					mConnectedThread.write(BuildHourToArduino());
				}
			}
		});

		BtnChangeFormat.setOnClickListener(new View.OnClickListener()
		{
			@Override
			public void onClick(View view){
				if (isBtConnected)
				{
					mConnectedThread.write(">SETF");
				}
			}
		});
		
		BtnDisconnect.setOnClickListener(new View.OnClickListener()
		{
			@Override
			public void onClick(View view){
				if (isBtConnected)
				{
					Disconnect();
				}
			}
		});
		//encargado de procesar los mensajes.
		h = new Handler() {
			public void handleMessage(android.os.Message msg) {
				switch (msg.what)
				{
					case RECEIVE_MESSAGE:
						byte[] readBuf = (byte[]) msg.obj;
						String strIncom = new String(readBuf, 0, msg.arg1);
						sb.append(strIncom);
						int endOfLineIndex = sb.indexOf("\r\n");
						if (endOfLineIndex > 0)
						{
							String sbprint = sb.substring(0, endOfLineIndex);
							sb.delete(0, sb.length());
							TxtArduinoRec.setText("Data from Arduino: " + sbprint);
						}
						break;
				}
			};
		};

	}
	private void msg(String s)
	{
		Toast.makeText(getApplicationContext(),s,Toast.LENGTH_LONG).show();
	}
	private String BuildHourToArduino(){
		//>SETH2016122119001004
		//>SETHAAAAMMDDHHMMSSWW
		Calendar c = Calendar.getInstance();
		int DiaSemana = c.get(Calendar.DAY_OF_WEEK);
		int Anio = c.get(Calendar.YEAR);
		int Mes = c.get(Calendar.MONTH);
		int Dia = c.get(Calendar.DAY_OF_MONTH);
		int Horas = c.get(Calendar.HOUR_OF_DAY);
		int Minutos = c.get(Calendar.MINUTE);
		int Segundos = c.get(Calendar.SECOND);

		String DateForArduino = String.format(">SETH%1$04d%2$02d%3$02d%4$02d%5$02d%6$02d%7$02d",
				Anio, Mes + 1, Dia, Horas, Minutos,Segundos, DiaSemana);
		msg(DateForArduino);

		return DateForArduino;
	}

	private void Disconnect()
	{
		if (btSocket!=null)
		{
			try
			{
				btSocket.close();
				isBtConnected = false;
			}
			catch (IOException e)
			{ msg("Error");}
		}
	}

	private AdapterView.OnItemClickListener myListClickListener = new AdapterView.OnItemClickListener()
	{
		public void onItemClick (AdapterView<?> av, View v, int arg2, long arg3) {
			if (myBluetoothAdapter.isEnabled()) {
				String info = ((TextView) v).getText().toString();
				address = info.substring(info.length() - 17);
				msg(address);

			} else {
				msg("El Bluetooth debe de estar encendido.");
			}
		}
	};


	public void showBTDialog() {
		final AlertDialog.Builder popDialog = new AlertDialog.Builder(this);
		final LayoutInflater inflater = (LayoutInflater) this.getSystemService(LAYOUT_INFLATER_SERVICE);
		final View Viewlayout = inflater.inflate(paired_devices_list, (ViewGroup) findViewById(R.id.bt_list));

		popDialog.setTitle("Dispositivos Bluetooth:");
		popDialog.setView(Viewlayout);

		myListView = (ListView) Viewlayout.findViewById(R.id.BTList);
		BTArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1);
		myListView.setAdapter(BTArrayAdapter);
		pairedDevices = myBluetoothAdapter.getBondedDevices();

		for(BluetoothDevice device : pairedDevices)
			BTArrayAdapter.add(device.getName()+ "\n" + device.getAddress());

		myListView.setOnItemClickListener(myListClickListener);
		// Button OK
		popDialog.setPositiveButton("Conectar",
				new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int which) {
						if (address != null)
						{
							new ConnectBT().execute();
						}
						dialog.dismiss();
					}
				});
		popDialog.create();
		popDialog.show();

	}
	private class ConnectedThread extends Thread {
		private final InputStream mmInStream;
		private final OutputStream mmOutStream;

		public ConnectedThread(BluetoothSocket socket) {
			InputStream tmpIn = null;
			OutputStream tmpOut = null;
			try {
				tmpIn = socket.getInputStream();
				tmpOut = socket.getOutputStream();
			} catch (IOException e) { }

			mmInStream = tmpIn;
			mmOutStream = tmpOut;
		}

		public void run() {
			byte[] buffer = new byte[256];
			int bytes;
			while (true) {
				try {
					bytes = mmInStream.read(buffer);
					h.obtainMessage(RECEIVE_MESSAGE, bytes, -1, buffer).sendToTarget();
				} catch (IOException e) {
					break;
				}
			}
		}

		public void write(String message) {
			byte[] msgBuffer = message.getBytes();
			try {
				mmOutStream.write(msgBuffer);
			} catch (IOException e) {
				msg("Error al enviar: " + e.getMessage());

			}
		}
	}



	private class ConnectBT extends AsyncTask<Void, Void, Void>
	{
		private boolean ConnectSuccess = true;

		@Override
		protected void onPreExecute()
		{
			progress = ProgressDialog.show(MainActivity.this, "Conectando...", "Espera...!!!");
		}

		@Override
		protected Void doInBackground(Void... devices)
		{
			try
			{
				if (btSocket == null || !isBtConnected)
				{
					myBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
					BluetoothAdapter.getDefaultAdapter().cancelDiscovery();
					BluetoothDevice dispositivo = myBluetoothAdapter.getRemoteDevice(address);
					btSocket = createBluetoothSocket(dispositivo);
					btSocket.connect();
				}
			}
			catch (IOException e)
			{
				ConnectSuccess = false;
			}
			return null;
		}

		private BluetoothSocket createBluetoothSocket(BluetoothDevice device) throws IOException {
			if(Build.VERSION.SDK_INT >= 10){
				try {
					final Method  m = device.getClass().getMethod("createInsecureRfcommSocketToServiceRecord", new Class[] { UUID.class });
					return (BluetoothSocket) m.invoke(device, myUUID);
				} catch (Exception e) {
					msg("No se pudo crear la conexion");
				}
			}
			return  device.createRfcommSocketToServiceRecord(myUUID);
		}

		@Override
		protected void onPostExecute(Void result)
		{
			super.onPostExecute(result);

			if (!ConnectSuccess)
			{
				msg("La conexion falló, intentelo de nuevo");
				isBtConnected = false;
			}
			else
			{
				msg("Conectado.");
				isBtConnected = true;
				mConnectedThread = new ConnectedThread(btSocket);
				mConnectedThread.start();
			}
			progress.dismiss();
		}
	}
}

• Prueba de funcionamiento:
• Comando AT: AT
• Respuesta: OK
• Configurar el Baudrate:
• Enviar: AT+BAUD<Numero>
• El parámetro número es un carácter hexadecimal de ‘1’ a ‘c’ que corresponden a los siguientes Baud Rates:
• 1=1200
• 2=2400
• 3=4800
• 4=9600
• 5=19200
• 6=38400
• 7=57600
• 8=115200
• 9=230400
• A=460800
• B=921600
• C=1382400
• Respuesta: OK<baudrate>
• Configurar el Nombre de dispositivo Bluetooth:
• Comando: AT+NAME<Nombre>
• Respuesta: OKsetname
• Configurar el código PIN de emparejamiento:
• Comando: AT+PIN<pin de 4 dígitos>
• Recibe: OK<pin de 4 dígitos>
• Obtener la versión del firmware:
• Enviar: AT+VERSION
• REspuesta: VERSION

#include <SoftwareSerial.h>
/*CONEXIONES:
 5V - VCC
 GND - GND
 PIN 2 - TX
 PIN 3 - RX
 */
//Crea conexion al BlueToothModuletooth - PIN 2 a TX y PIN 3 a RX
SoftwareSerial BlueToothModule(2, 3);
//Nombre de 20 caracteres maximo
char NOMBRE[21] = "ClockView"; 
// 1=1200 , 2=2400, 3=4800, 4=9600, 5=19200, 6=38400, 7=57600, 8=115200
char BPS = '4';
//PIN O CLAVE de 4 caracteres numericos
char PASS[5] = "0000";

void setup()
{
// inicialmente la comunicacion serial a 9600 Baudios (velocidad de fabrica
 BlueToothModule.begin(9600);
 pinMode(13,OUTPUT);
 delay(4000);
// Inicializa comando AT
 BlueToothModule.print("AT");
 delay(1000);
// Configura el nuevo nombre
  BlueToothModule.print("AT+NAME"); 
 BlueToothModule.print(NOMBRE);
 delay(1000);
// Configura la nueva velocidad  
 BlueToothModule.print("AT+BAUD");
 BlueToothModule.print(BPS); 
 delay(1000);
// Configura el nuevo PIN
 BlueToothModule.print("AT+PIN");
 BlueToothModule.print(PASS); 
 delay(1000);
}
 
void loop()
{
 //Nada
}

• Del módulo SD:
• CLK al pin 13.
• MISO al pin 12.
• MOSI al pin 11.
• CS al pin 10.
• Para las matrices:
• DIN al pin 9.
• CS al pin 8.
• CLK al pin 7.
• Para el módulo de reloj (DS1302):
• CE(RST) al pin 6.
• IO (DAT) al pin 5.
• SCLK (CLK) al pin 4.
• Para el módulo Bluetooth HC06:
• TXD al pin RX (0) del arduino.
• RXD al pin TX (1) del arduino.

1. VCC. Se conecta a +5 voltios.
2. GND. Se conecta a tierra.
3. DIN. Lo conectaremos al pin 12 del arduino.
4. CS. Lo conectaremos al pin 11 del arduino.
5. CLK. Lo conectaremos al pin 10 del arduino.

1. VCC. Se conecta a VCC en la entrada de la siguiente matriz.
2. GND. Se conecta a tierra.
3. DIN. Lo conectaremos a DIN en la entrada de la siguiente matriz.
4. CS. Lo conectaremos a CS en la entrada de la siguiente matriz.
5. CLK. Lo conectaremos CLK en la entrada de la siguiente matriz.

1. VCC. Se conecta a +5 voltios.
2. GND. Se conecta a tierra.
3. CLK (Serial clock). Lo conectaremos al pin 9 del arduino.
4. DAT (IO). Lo conectaremos al pin 8 del arduino.
5. RST (Chip enable). Lo conectaremos al pin 7 del arduino.

LedControl y Matrices LED.

void setLed(int addr, int row, int col, boolean state);

void setRow(int addr, int row, byte value);