ubiq_uitous communication, wearable and multimedia systems

Arduino shield with display and multiple connectivity options

rac — Thu, 26 Aug 2010 06:32:26 +0000

The shield may use either Bluetooth or WLAN for communicating with the outside world.

It is also used for trying to run btstack ( http://code.google.com/p/btstack/ ) on the Arduino.

Please just click on the photos for more details.

Connecting LEGO peripherals to an Arduino

rac — Tue, 03 Aug 2010 05:50:08 +0000

Can be done via I2C.

Work in progress - more information to follow.

Experiments with the PIC32 based UBW32 board

rac — Sun, 13 Jun 2010 08:29:32 +0000

The board uses a bootloader that lets you use a terminal program (e.g. minicom, ZTerm) to execute simple commands.

New project idea: btstack on a stick

rac — Sun, 21 Mar 2010 17:24:17 +0000

The idea is to have a simple method for firmware updates - e.g. with a built-in bootloader and dfu-programmer.

Might use an AT90USB1287 (on an ATMEL USB Key) or an ATMega2560 board.

Experiments with CC1101 radios

rac — Sat, 20 Mar 2010 09:30:52 +0000

I have modules operating at 433 MHz as well as 868 MHz

Programming is done via the dfu-programmer software - just tested it on OSX.

Flashing the Betty remote

rac — Thu, 18 Mar 2010 06:51:53 +0000

I’m stepping forward with the process - can flash individual software on the remote now.

There is more info in the Flickr photo stream.

Programming a TV remote with IR and RF capabilities

rac — Sun, 14 Mar 2010 19:28:31 +0000

I’m programming a TV remote that has IR and RF capabilities.

Stepping forward with Arduino Bluetooth communication

rac — Sun, 07 Feb 2010 08:32:25 +0000

The video shows that changing the display state can either be done locally (by pushing a button) or by receiving data via the Bluetooth RFCOMM link. On a state change data is also transmitted via this link. For the Arduino this is done by just using the serial port.

See the Arduino code below:

#include 

S65Display lcd;
int state=0;

const int button1_pin=2;
const int button2_pin=3;

void drawText_0(void)
{
  lcd.drawTextPGM(30, 50, PSTR("State 0"), 2, RGB(0, 0, 255), RGB(255, 255, 255));
}

void drawText_1(void)
{
  lcd.drawTextPGM(30, 50, PSTR("State 1"), 2, RGB(0, 0, 255), RGB(255, 255, 255));
}

void setup()
{
  state=0;
  //init LCD
  lcd.init(4); //spi-clk = Fcpu/4

  //clear screen
  lcd.clear(RGB(255, 255, 255));

  drawText_0();
  pinMode(button1_pin, INPUT);
  pinMode(button2_pin, INPUT);
  Serial.begin(9600);
}

void loop()
{
  static byte recvd_byte=' ';

  if (Serial.available() > 0)
  {
    recvd_byte=Serial.read();
  }

  if ((state == 0) && ((digitalRead(button2_pin) == LOW) || (recvd_byte=='1')))
  {
    state=1;
    drawText_1();
    Serial.println("State 1");
    recvd_byte=' ';
  }
  if ((state == 1) && ((digitalRead(button1_pin) == LOW) || (recvd_byte=='0')))
  {
    state=0;
    drawText_0();
    Serial.println("State 0");
    recvd_byte=' ';
  }
}

Setting up a bidirectional Bluetooth link between iPod / iPhone and Arduino

rac — Sun, 31 Jan 2010 19:27:14 +0000

This is work in progress - video of setup in operation to follow.

The photo has additional notes on Flickr.

Experimenting with a serial to WLAN module

rac — Sun, 03 Jan 2010 18:19:27 +0000

The module will enable wireless connectivity from e.g. an MCU / Arduino to an iPhone via the standard WLAN way.

There is more info on the Flickr page that you reach when clicking on the photo.