expressraider: junio 2011

Arduino, potenciometro y C#

http://thebatzuk.org/2011/06/arduino-potenciometro-puerto-serial-y-c.html

Utilizar jQuery en blogger

Editar la plantilla y agregar este código lugo del <head>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js' 
type='text/javascript'/>

Luego, antes del </body>

<script>
$(document).ready(function() {    
    alert(&quot;ready!&quot;); 
});
</script>

Syntax Highlighter para blogger

http://alexgorbatchev.com/SyntaxHighlighter/manual/themes/

Para integrarlo en blogger:

http://www.cyberack.com/2007/07/adding-syntax-highlighter-to-blogger.html

Ejemplo (agregarlo en modo html, no en modo redacción):

IMPORTANTE!!! PARA QUE NO PARSEE LOS TAGS DE HTML, USAR EL CDATA!!

<script type="syntaxhighlighter" class="brush: js"><![CDATA[
/**
* SyntaxHighlighter
*/
function foo()
{
if (counter <= 10)
return;
// it works!
}
]]></script>

Midi drum kit con Arduino

Ejemplo 1:

http://lusorobotica.com/index.php?topic=1237.0

Ejemplo 2:
Conexion de un piezo al arduino:
http://www.sparkfun.com/tutorials/330

Ejemplo 2:

http://www.spikenzielabs.com/SpikenzieLabs/DrumKitKit.html

Ejemplo 3:

-En los ejemplos de Fritzing: Arduino/Sound/Midi Drum Kit

-Fuente: http://todbot.com/blog/2006/10/29/spooky-arduino-projects-4-and-musical-arduino/

-Codigo:

/*
 * MIDI Drum Kit
 * -------------
 * Convert Arduino to a MIDI controller using various inputs and
 * the serial port as a MIDI output.
 *
 * This sketch is set up to send General MIDI (GM) drum notes 
 * on MIDI channel 1, but it can be easily reconfigured for other
 * notes and channels
 *
 * It uses switch inputs to send MIDI notes of a fixed velocity with
 * note on time determined by duration of keypress and it uses
 * piezo buzzer elements as inputs to send MIDI notes of a varying velocity
 * & duration, depending on forced of impulse imparted to piezo sensor.
 *
 * To send MIDI, attach a MIDI out jack (female DIN-5) to Arduino.
 * DIN-5 pinout is:                               _____ 
 *    pin 2 - Gnd                                /     \
 *    pin 4 - 220 ohm resistor to +5V           | 3   1 |  MIDI jack
 *    pin 5 - Arduino D1 (TX)                   |  5 4  |
 *    all other pins - unconnected               \__2__/
 * On my midi jack, the color of the wires for the pins are:
 *   3 = n/c 
 *   5 = black  (blue)
 *   2 = red    (red)
 *   4 = orange (yellow)
 *   1 = brown
 *
 * Based off of Tom Igoe's work at:
 *    http://itp.nyu.edu/physcomp/Labs/MIDIOutput
 *
 * Created 25 October 2006
 * copyleft 2006 Tod E. Kurt <tod@todbot.com
 * http://todbot.com/
 *
 * Updates:
 * - 2 May 2009 - fixed noteOn() and noteOff() 
 *
 */

// what midi channel we're sending on
// ranges from 0-15
#define drumchan           1

// general midi drum notes
#define note_bassdrum     35
#define note_snaredrum    38
#define note_hihatclosed  42
#define note_hihatopen    44
#define note_crash        49

// define the pins we use
#define switchAPin 7
#define switchBPin 6
#define switchCPin 5
#define piezoAPin  0
#define piezoBPin  1
#define ledPin     13  // for midi out status

// analog threshold for piezo sensing
#define PIEZOTHRESHOLD 100

int switchAState = LOW;
int switchBState = LOW;
int switchCState = LOW;
int currentSwitchState = LOW;

int val,t;

void setup() {
  pinMode(switchAPin, INPUT);
  pinMode(switchBPin, INPUT);
  pinMode(switchCPin, INPUT);
  digitalWrite(switchAPin, HIGH);  // turn on internal pullup
  digitalWrite(switchBPin, HIGH);  // turn on internal pullup
  digitalWrite(switchCPin, HIGH);  // turn on internal pullup

  pinMode(ledPin, OUTPUT);
  Serial.begin(31250);   // set MIDI baud rate
}

void loop() {
  // deal with switchA
  currentSwitchState = digitalRead(switchAPin);
  if( currentSwitchState == LOW && switchAState == HIGH ) // push
    noteOn(drumchan,  note_bassdrum, 100);
  if( currentSwitchState == HIGH && switchAState == LOW ) // release
    noteOff(drumchan, note_bassdrum, 0);
  switchAState = currentSwitchState;

  // deal with switchB
  currentSwitchState = digitalRead(switchBPin);
  if( currentSwitchState == LOW && switchBState == HIGH ) // push
    noteOn(drumchan,  note_snaredrum, 100);
  if( currentSwitchState == HIGH && switchBState == LOW ) // release
    noteOff(drumchan, note_snaredrum, 0);
  switchBState = currentSwitchState;

  // deal with switchC
  currentSwitchState = digitalRead(switchCPin);
  if( currentSwitchState == LOW && switchCState == HIGH ) // push
    noteOn(drumchan,  note_hihatclosed, 100);
  if( currentSwitchState == HIGH && switchCState == LOW ) // release
    noteOff(drumchan, note_hihatclosed, 0);
  switchCState = currentSwitchState;

  // deal with first piezo, this is kind of a hack
  val = analogRead(piezoAPin);
  if( val >= PIEZOTHRESHOLD ) {
    t=0;
    while(analogRead(piezoAPin) >= PIEZOTHRESHOLD/2) {
      t++;
    }
    noteOn(drumchan,note_hihatopen, t*2);
    delay(t);
    noteOff(drumchan,note_hihatopen,0);
  }

  // deal with second piezos, this is kind of a hack
  val = analogRead(piezoBPin);
  if( val >= PIEZOTHRESHOLD ) {
    t=0;
    while(analogRead(piezoBPin) >= PIEZOTHRESHOLD/2) {
      t++;
    }
    noteOn(drumchan,note_crash, t*2);
    delay(t);
    noteOff(drumchan,note_crash,0);
  }
}

// Send a MIDI note-on message.  Like pressing a piano key
// channel ranges from 0-15
void noteOn(byte channel, byte note, byte velocity) {
  midiMsg( (0x90 | channel), note, velocity);
}

// Send a MIDI note-off message.  Like releasing a piano key
void noteOff(byte channel, byte note, byte velocity) {
  midiMsg( (0x80 | channel), note, velocity);
}

// Send a general MIDI message
void midiMsg(byte cmd, byte data1, byte data2) {
  digitalWrite(ledPin,HIGH);  // indicate we're sending MIDI data
  Serial.print(cmd, BYTE);
  Serial.print(data1, BYTE);
  Serial.print(data2, BYTE);
  digitalWrite(ledPin,LOW);
}

Pushbuttons con arduino

1. Se configura el pin 2 como input en Arduino.
2. Para poder leer LOW en el pin 2 cuando el boton no esta presionado, se conecta a Gnd con una resistencia de 10k.
3. Cuando se presiona el boton, se cierra el circuito entre el pin 2 y +5v, y la corriente, en lugar de pasar por la resistencia hacia Gnd, toma el camino con menos resistencia, y entonces se lee HIGH en el pin 2.

Fuente: http://www.youtube.com/watch?v=XUuXq4J4u14&feature=player_detailpage

Ver esta url: http://www.ladyada.net/learn/arduino/lesson5.html

Para conectar múltiples botones:

Fuente: http://tronixstuff.wordpress.com/2011/08/15/tutorial-arduino-and-push-wheel-switches/#oogleto:http://tronixstuff.files.wordpress.com/2011/08/ex40p1_schem.jpg

Libreria OneButton:

http://www.mathertel.de/Arduino/OneButtonLibrary.aspx

Debounce: (para evitar lecturas múltiples)

http://arduino.cc/en/Tutorial/Debounce

Conectar WII nunchuck con arduino (codigo arduino y .net)

ATENCION!!
Este código funciona con la versión 0022 del IDE de Arduino!!

Arduino

/*
* WiiChuckDemo --
*
* 2008 Tod E. Kurt, http://thingm.com/
*
*/

#include <Wire.h>
#include "nunchuck_funcs.h"

int loop_cnt=0;

byte accx,accy,zbut,cbut;
int ledPin = 13;

void setup()
{
Serial.begin(19200);
nunchuck_setpowerpins();
nunchuck_init(); // send the initilization handshake

Serial.print("WiiChuckDemo ready\n");
}

void loop()
{
if( loop_cnt > 100 ) { // every 100 msecs get new data
loop_cnt = 0;

nunchuck_get_data();

nunchuck_obtener_datos();
/*
accx = nunchuck_accelx(); // ranges from approx 70 - 182
accy = nunchuck_accely(); // ranges from approx 65 - 173
zbut = nunchuck_zbutton();
cbut = nunchuck_cbutton();

Serial.print("accx: "); Serial.print((byte)accx,DEC);
Serial.print("\taccy: "); Serial.print((byte)accy,DEC);
Serial.print("\tzbut: "); Serial.print((byte)zbut,DEC);
Serial.print("\tcbut: "); Serial.println((byte)cbut,DEC);*/
}
loop_cnt++;
delay(1);
}

---------------------------------------------------------------------

.NET

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.IO.Ports;

namespace WiiChuck

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

}

private void cmdComenzar_Click(object sender, EventArgs e)

{

SerialPort port = new SerialPort("COM7", 19200);

int n = 0; string t;

String[] v;

port.Open();

if (port.IsOpen)

{

while (true)

{

//port.Write("a");

t = port.ReadLine();

v = t.Split(',');

try

{

//String s = v[3];

//String[] v2 = s.Split(':');

//pic.Left = int.Parse(v2[1]);

pic.Left = int.Parse(v[1]) * 4;

//pic.Top = this.Height - int.Parse(v[2]) - 100;

if (v[6] == "but:1")

pic.BackColor = Color.Red;

else

pic.BackColor = Color.Blue;

}

catch (Exception ex)

{ }

txtDatos.Text = t;

System.Threading.Thread.Sleep(10);

Application.DoEvents();

}

Obtener la ultima version con VSS api

   Imports SourceSafeTypeLib

   Dim vssDB As VSSDatabase

   vssDB = New VSSDatabase()
   Const baseVSS = "\\servidor\vss$\srcsafe.ini"
   vssDB.Open(baseVSS, "", "")

sFolder = vssDB.VSSItem("$/" & proyecto, False)

sFolder.Get(My.Settings.DirFuentes & proyecto, VSSFlags.VSSFLAG_FORCEDIRNO Or VSSFlags.VSSFLAG_REPREPLACE Or VSSFlags.VSSFLAG_RECURSYES)