Kiyoko Kuroda (黒田清子)

• Kuroda Kiyoko 
• 黒田清子

Genki Kuroda 黒田元気

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Genki Kuroda (黒田元気)

• Genki Kuroda
• 黒田元気
• http://mulps.wordpress.com/about/

Arduino Group in San Francisco Bay Area?

Is anybody interested in Arduino hobby group meeting on weekends?

My projects in the past are here.

Let me know if anyone is interested.

OpenSSL AES 128bit Encryption on Linux/FreeBSD and Decryption in C#.NET

This tutorial works great.

http://deusty.blogspot.com/2009/04/decrypting-openssl-aes-files-in-c.html

Samsung NPF File

If you find NPF file extracted from Samsung Phone, finding a solution?
It’s actually a mdb file used in Microsoft Access.

I confirmed this by changing the extension .npf into .mdb, and just open the file with Microsoft Access. Even legacy Access 2003 was fine to open this file without any issue…

—

You’re welcome. I helped my friends to do this, and I hope to help more people in the same situation. Thanks.

Tabbed PuTTY = PuTTY + PuTTY Connection Manager

If you are forced to work on Windows Machine. This is very neat solution.

 

nginx0.9.4 + PHP-5.2.17 + PHP-FPM

Just an update to this post at http://interfacelab.com/nginx-php-fpm-apc-awesome/

cd /usr/local/src

sudo wget http://us.php.net/get/php-5.2.17.tar.gz/from/this/mirror
sudo wget http://php-fpm.org/downloads/php-5.2.17-fpm-0.5.14.diff.gz
sudo apt-get install make bison flex gcc patch autoconf subversion locatesudo apt-get install libxml2-dev libbz2-dev libpcre3-dev libssl-dev zlib1g-dev libmcrypt-dev libmhash-dev libmhash2 libcurl4-openssl-dev libpq-dev libpq5

sudo tar xvf php*.gz
cd php*

sudo ./configure –enable-fastcgi –enable-fpm –with-mcrypt –with-zlib –enable-mbstring –disable-pdo –with-pgsql –with-curl –disable-debug –enable-pic –disable-rpath –enable-inline-optimization –with-bz2 –with-xml –with-zlib –enable-sockets –enable-sysvsem –enable-sysvshm –enable-pcntl –enable-mbregex –with-mhash –enable-xslt –enable-memcache –enable-zip –with-pcre-regex

Arduino Kitchen Timer

Arduino Kitchen Timer is made of 4-digit 7-segment LED, and 12-key keypad, 8-bit shift register 74HC164, and some resistors, decoupling capacitor, and Piezo speaker for the sound output.

* Do not imagine I am using this timer in my kitchen because I don’t. :) It’s just the name of device…

Feature:
Kitchen Timer. Maximum duration is 99 minutes and 99 sec. Beep when it’s done.

Parts:
1 x Keypad 12 Button
1 x 7-Segment Yellow 4 Digit LED
1 x 74AC164
8 x 470 ohm Resistor (LED)
* 220 ohm may work but it’s a little bit brighter. I used 470 ohm resistor array.
3 x 4.7K ohm Resistor (Keypad pullup resistors)
1 x Piezo Speaker taken out from old PC.

Pin Assignment:
Digital 02-05 Common Cathode of LED
Digital 06-12 Keypad Scanning
Digital 13 Piezo Speaker Output
Analog 0 74AC164 Data
Analog 1 74AC164 Clock
Analog 3-5 Not Used.

Video and Semantic in eagle format will be added soon.
Porting to Arduino Kitchen Timer Shield is on the way, but I will replace the keypad with just three or four buttons.

#include   <GenKeypad.h> //My keypad library
#include   <MsTimer2.h> //download this library at http://www.arduino.cc/playground/Main/MsTimer2

#define SHIFT_DATA 15     // 74AC164 data pin
#define SHIFT_CLOCK  14   // clock pin
#define SPEAKER_PIN 13

int NumPins[4] = {2, 3, 4, 5};
int SS = 0;
int MM = 0;
int start = 0;
char input[4] = {0, 0, 0, 0};
int inputIndex = 0;
int length = 15; // the number of notes
char notes[] = "ccccccccccccccc";
int beats[] = { 3, 1, 1, 3, 1, 1, 3, 1, 1, 3, 1, 1, 3, 1, 1 };

int tempo = 300;
int beeping = 0;

/**
   Keypad 
 **/
GenKeypad keypad;

//Key Input Callback Functions 

void keyUP(char key)
{
  //Serial.print("keyUP: ");  
  //Serial.println(key);  
}  

int atoi(char c)
{
  if (c == 0)
    return 0;
  else
    return (c - '0');
}

void keyDOWN(char key)
{
  Serial.print("keyDOWN: ");
  Serial.println(key);  

  if (key == '#' && start == 0)
  {
    //Convert input chars into MM:SS
    MM = atoi(input[0]) * 10 + atoi(input[1]);
    SS = atoi(input[2]) * 10 + atoi(input[3]);

    if (MM + SS > 0)
      start = 1;
    return;
  }
  else if (key == '#' && start == 1)
  {
    start = 0;
    return;
  }

  if (key == '*')
  {
    if (beeping == 0)
    {
      for (int i = 0; i < 4; i++)
        input[i] = 0;
    }

    inputIndex = 0;
    start = 0;
    beeping = 0;
    digitalWrite(SPEAKER_PIN, LOW);
  }
  else
  {
    shiftDigit(input);
    input[3] = key;      

    inputIndex++;
    inputIndex %= 4;
  }
}  

void shiftDigit(char input[4])
{
  input[0] = input[1];
  input[1] = input[2];
  input[2] = input[3];
}

void keyPRESSING(char key)
{
  //Serial.print("keyPressed: ");  
  //Serial.println(key);  
}

void setup(void)
{
  Serial.begin(9600);

  //Digital pins parameter order matters!!
  keypad.setRowPins(11, 6, 7, 9);  //These pins are used as OUTPUT pins.
  keypad.setColPins(10, 12, 8);    //These pins are used as INPUT pins.  
  keypad.setFunction(GenKeypad::EVENT_KEY_UP,       keyUP);
  keypad.setFunction(GenKeypad::EVENT_KEY_DOWN,     keyDOWN);
  keypad.setFunction(GenKeypad::EVENT_KEY_PRESSING, keyPRESSING);

  pinMode(SPEAKER_PIN, OUTPUT);

  pinMode(SHIFT_DATA, OUTPUT);
  pinMode(SHIFT_CLOCK, OUTPUT);

  pinMode(NumPins[0], OUTPUT);
  pinMode(NumPins[1], OUTPUT);
  pinMode(NumPins[2], OUTPUT);
  pinMode(NumPins[3], OUTPUT);

  digitalWrite(NumPins[0], HIGH);
  digitalWrite(NumPins[1], HIGH);
  digitalWrite(NumPins[2], HIGH);
  digitalWrite(NumPins[3], HIGH);

  // writing default values (from the datasheet)

  MsTimer2::set(1000, secPulse);
  MsTimer2::start();
}

int digitSS = 0;
int digitMM = 0;
int digit = 0;

  byte font[10] = {
	//abcdefg.
    0b11111100,
    0b01100000,
    0b11011010,
    0b11110010,
    0b01100110,
    0b10110110,
    0b10111110,
    0b11100100,
    0b11111110,
    0b11100110
  };

byte c2font(char c)
{
  const byte blank = 0b00000000;

  if (c == 0)
    return blank;
  else
    return font[c-'0'];
}

void setChars(char input[4], int delaymsec)
{
  digitalWrite(NumPins[0], LOW);
  shiftOut(SHIFT_DATA, SHIFT_CLOCK, LSBFIRST, c2font(input[3]));
  delay(delaymsec);
  digitalWrite(NumPins[0], HIGH);

  digitalWrite(NumPins[1], LOW);
  shiftOut(SHIFT_DATA, SHIFT_CLOCK, LSBFIRST, c2font(input[2]));
  delay(delaymsec);
  digitalWrite(NumPins[1], HIGH);

  digitalWrite(NumPins[2], LOW);
  shiftOut(SHIFT_DATA, SHIFT_CLOCK, LSBFIRST, c2font(input[1]));
  delay(delaymsec);
  digitalWrite(NumPins[2], HIGH);

  digitalWrite(NumPins[3], LOW);
  shiftOut(SHIFT_DATA, SHIFT_CLOCK, LSBFIRST, c2font(input[0]));
  delay(delaymsec);
  digitalWrite(NumPins[3], HIGH);

  delay(delaymsec);
}

void beep()
{
  if (start)
  {
    digitalWrite(SPEAKER_PIN, HIGH);
    beeping = 1;
    start = 0;
  }
  else
    digitalWrite(SPEAKER_PIN, LOW);
}

void secPulse()
{
  if (start)
  {
    SS--;
    if (SS == 0 && MM == 0)
    {
      beep();
      start = 0;
      return;
    }

    if (SS == -1 && MM > 0)
    {
      MM--;
      SS = 59;
    }

  }
}
void playTone(int tone, int duration) {
  for (long i = 0; i < duration * 1000L; i += tone * 2)
  {
    digitalWrite(SPEAKER_PIN, HIGH);
    delayMicroseconds(tone);
    digitalWrite(SPEAKER_PIN, LOW);
    delayMicroseconds(tone);
  }
}

void playNote(char note, int duration) {
  char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C', 'F', 'G'};
  int tones[] = { 1915, 1700, 1519, 1432, 1275, 1136, 1014, 473, 478};

  // play the tone corresponding to the note name
  for (int i = 0; i < 10; i++) {
    if (names[i] == note)
    {
      playTone(tones[i], duration);
    }
  }
}

char * clearLeadingZero(char input[4])
{
  if (input[0] == '0')
  {
    input[0] = 0;
    if (input[1] == '0')
    {
      input[1] = 0;
      if (input[2] == '0')
        input[2] = 0;
    }
  }

  return input;
}

void processLCD()
{
  static char chs[4] = {'0', '0', '0', '0'};

  if (start)
  {
    chs[3] = SS%10 + '0';
    chs[2] = SS/10 + '0';
    chs[1] = MM%10 + '0';
    chs[0] = MM/10 + '0';

    setChars(clearLeadingZero(chs), 2);
  }
  else
  {
    setChars(input, 2);
  }
}

void loop()
{
  int someKeyDown = keypad.scanKeys(0);
  keypad.handlePostEvents(someKeyDown);      

  processLCD();

  if (beeping = 1)
  {
     beeping++;
     beeping %=3;

     for (int i = 0; i < length; i++)
     {
       someKeyDown = keypad.scanKeys(0);
       keypad.handlePostEvents(someKeyDown);      

       processLCD();
       if (beeping != 0)
         playNote(notes[i], beats[i] * tempo/2);

       // pause between notes
       delay(tempo / 2);
     }
  }
}

NTSC on Arduino

I switched to NTSC signal. I think it’s much simpler and easier, but it’s monochrome.
I’ve managed to get around 40 pixels width and working to increase vertical resolution.
It’s a very good idea to use constant length of interrupt to send NTSC signal apart from your pixel manipulation.

http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1188261175/0

—

I am trying to build VGA (analog RGB) signal output on Arduino.
I found out that H/V Sync can be done by the built-in timer interrupt.

1. Arduino Pin-out assignment.

02: Red
03: Green
04: Blue
(05: SyncFlag)
06: VSync
07: HSync
10-13: SPI for EEPROM

(On going memo)

* Memory?
Frame buffer: 640 x 480 pixels x 3 bytes per pixel = 900KB
External EEPROM 2MB AT45DB161D may be needed.

* Find out the maximum transmission rate.

* Double buffering with two Atmega chips and one 2MB AT45DB161D? possible?

* Any suggestions?

References:
http://avga.prometheus4.com/index.php?p=2-0 (AVR but not written for Arduino)
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1228264461/all (Implementation issues discussed here.)
H/V Sync code using ISR timer: http://olb7.free.fr/arduino/syncInterrupt.pde
EEPROM:

http://blog.blockos.org/?p=27

http://todotani.cocolog-nifty.com/blog/2009/07/arduino-4cf4.html

Breadboard Arduino

You can build DIY arduino in your breadboard. The best site I found is: http://itp.nyu.edu/physcomp/Tutorials/ArduinoBreadboard

I have not managed the USB part yet, but I am sure you can add the Arduino Serial USB Board

So far, the LED blinking works good on my breadboard.
Eventually I am planning to do some VGA signal experiment on the breadboard.