ubiq_uitous communication, wearable and multimedia systems

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.h>

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=' ';
  }
}

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

The photo has additional notes on Flickr.

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.

Work in progress

The photo has notes on Flickr.

Matthias came up with an OpenGL ES demo that shows a WiiMote
in sync with an iPhone via Bluetooth.

A LEGO Mindstorms NXT connects to an Arduino via I2C.

This enables all kinds of new (intelligent) sensor / actor combinations. Also - the NXT provides Bluetooth wireless connectivity.

A Symbian S60 Nokia E71 connected to an Arduino Mega via Bluetooth.

The E71 may also be used as a “gateway” with an uplink via WLAN or GSM - which basically make the LEDs switchable from everywhere in the world. This photo illustrates a potential usage scenario with a remote controlled vehicle.

Using the standardized Arduino boards and development environment can speed up things - while still being cost-efficient and flexible.

This is work in progress - the vehicle will soon be controlled via a Bluetooth link.

Just to give an idea.

Integration of Bluetooth and servo control code still to be finished.