Mood Based Navigation Shoe

Unconventional User Interface // 26.01.2009 // Mood Based Navigation Sheo // 1 Haring, Naderer, Zachhuber

Mood Based Navigation Shoe

Roland Haring Otto Naderer

Doris Zachhuber

Matthias Kranz Unconventional User Interaction

VO 367.051 UE 367.052


Mood Based Navigation Shoe

Navigation system for pedestrians Intended use in urban

environments Input: the user‘s current emotional

state To find other users who feel the

same To find an activity which fits the

mood.

Output: LED-integrated shoe Indicates the heading


Components

Server Handles all clients Does „mood matching“

Client Ultra Mobile PC (UMPC) Provides GUI to enter the current mood Maintains connection to server Features GPS receiver Controls and powers the Arduino board

Arduino Board Small programmable board (USB interface) Controls LEDs Programming e.g. in „Processing“ (JAVA)

Shoes Integrated cross-shaped LED setup Connected to Arduino‘s outputs Direct user (left, right, back, forth)


Further Information / Project Site

Paper Extensive information about the project Explains every aspect more detailed Available at our website

Website Hosted on GoogleCode At: http://code.google.com/p/moodbs/ Supports subversion

Read-only access for „anonymous“

Sources and installers available


Arduino

Open Source Project (HW u. SW) Analog und digital I/Os USB-Interface for communication with

the PC Programming in C++ with Wiring

Framework Java-IDE Big community

Lots of SW libraries Lots of HW components

Autonomous usage via battery possible Distribution

Mainly used among architects and media artists

12 distribution partners in Europa Lots of clones

http://www.arduino.cc


Arduino DuemilanoveMicrocontroller ATmega168

Operating Voltage 5V

Input Voltage 7-12V

Input Voltage (limits)

6-20V

Digital I/O Pins 14

Analog Input Pins 6

DC Current per I/O Pin

40 mA

Flash Memory 16 KB

SRAM 1 KB

EEPROM 512 bytes

Clock Speed 16 MHz

Newest USB-Board of Arduino $35 at Sparkfun Hardware-Design available for

free Atmel ATmega168 USB to Serial Converter Quarz-Oscillator Multi-Pin Connector Power supply USB or

Battery/Power Adapter PWM: 3, 5, 6, 9, 10, and 11.

Provide 8-bit PWM output with the analogWrite() function

Arduino NG No built-in LED connected

to digital pin 13 Atmel ATmega168 or ATmega8


Atmel ATmega168

RISC Processor Power: 3,5µW – 45mW (bei 5V und 16

MHz) Harvard Architecture Memory

16KB Flash (Program + Data) 1KB SRAM (Data) 512Bytes EEPROM

16MHz Clock Frequency 23 GPIO Pins 6 PWM Outputs 6 Analog Inputs(10 Bit ADC-Converter) 2x 8-Bit Timer 1x 16-Bit Timer Bus Interfaces

USART SPI (Master) I2C (Master/Slave)

Watchdog Timer


Duemilanove Accessories

TouchShield XBee Shield Stepper Motor Control

Ethernet Shield GPS Shield Sensoren / Aktuatoren


Sampe Project Ardrumo

MIDI drums Self construction $53 Piezo elements for pressure

sensitive sensors

Arduino-Board A/D-Convertion of signals Data transfer via USB Only 14 lines of code!


Arduino LilyPad – Main Board

Wearable E-Textile Technology developed by Leah Buechley [http://web.media.mit.edu/~leah/index.html]

Designed in cooperation with Spark Fun Electronics Sewing on and washing of clothes possible ATmega168V with Arduino Bootloader Lots of accessories available(Input, Output, Power, Sensor

und Actuator-Boards)

Dimensions: 50mm outer diameter Thickness 0,8 mm

Microcontroller ATmega168V

Operating Voltage 2.7-5.5 V

Input Voltage 2.7-5.5 V

Digital I/O Pins14 (of which 6 provide PWM output)

Analog Input Pins 6

DC Current per I/O Pin

40 mA

Flash Memory16 KB (of which 2 KB used by bootloader)

SRAM 1 KB

EEPROM 512 bytes

Clock Speed 8 MHz


Arduino LilyPad – Accessories

LilyPad Accelerometer 20 mm Ø, $24.95

LilyPad Bright White LED 6 x 11 mm, $ 1.95

LilyPad Button Board8 x 16 mm, $ 1.50

LilyPad Buzzer20 mm Ø, $ 7.95

LilyPad Tri-Color LED20 mm Ø, $7.95

LilyPad Vibe Board20 mm Ø, $14.95

LilyPad USB Link 0.9x1.25", $14.95

LilyPad Temperature Sensor20 mm Ø, $ 4.95

LilyPad Power Supply AAA battery (1.2 – 5V)

56 x 26 mm, $14.95

LilyPad LiPower Supply Lithium Polymer battery (5V)

20 mm Ø, $14.95

Conductive Thread 117/17 2ply, 234/34 4ply, $19.95

LilyPad Light Sensor 20 mm Ø, $7.95

LilyPad Extensions:Bluetooth (siehe Abb.)Data-Logging


Leah Buechley – Turn Lights for Bikers

Buttons on the sleeve cuffs

Lights LEDs


Arduino – Programming

Java IDE „Processing“ MIT-Project

Programming in C++ GNU Compiler

Simple Projects Wiring Library abstracts Hardware

User has to implement setup and loop Setup is called once Loop is called cyclic

Only one file with source code per project (Sketch)

One control flow No Interrupts

Many additional libraries from community ~ 30 on www.arduino.cc Stepper Motor Control Soft-UART LCD Etc.

„Printf“-Debugging Bootloader allows Flash-Programming

via USB


Prototype – 2 Shoes

Components: 4 green LEDs

(front, right, back, left) 4 resistors (150 Ω) Connector pins for every

LED and GND (5V) Arduino digital pins 4 - 7 USB cable to PC/PDA


Client - Server Architecture

MBS ServerMBS Client

MBS Client

MBS Client

Position Update

Mood Update

Cancel

Navigation (LED) Update

Statustext Update


Mood / Activity Matrix

0 … not1 … neutral2 … little3 … much


Matching Algorithm

float Mood::getMatch(Mood &other){

float match = 0.0f; float cnt = 0.0f; for (int i=0; i<=MAX_MOOD_INDEX; i++) {

if (other.getVal(i) == NEUTRAL || getVal(i) == NEUTRAL) { continue; } cnt++; float diff = abs((float)other.getVal(i) - (float)getVal(i)); const float MAX_DIST = 3.0f; match += 1.0f - diff / MAX_DIST;

} match /= cnt; return match;

}

Threshold: 0.75


State Transition Diagram

General Rules:

1. Cancel brings user back to state „findUsers“ from every state except idle (and remembers declined activities and users)

2. Changing of Mood brings User always back to state „findUsers“


Server

C++ win32OpenGLOSM Karte


Server Configuration

<?xml version="1.0" encoding="utf-8" ?>

<MBSSERVER> <MAP FILENAME="../data/linz.png" UL_LNG="14.22077" UL_LAT="48.34071" LR_LNG="14.360633" LR_LAT="48.285773"/>

<ACTIVITY NAME="Moviemento" LNG="14.290535" LAT="48.30292035" TYPE="0"/> <ACTIVITY NAME="Cineplex" LNG="14.32139873" LAT="48.30110691" TYPE="0"/> <ACTIVITY NAME="Landestheater" LNG="14.23575" LAT="48.303769" TYPE="1"/> <ACTIVITY NAME="Theater Phoenix" LNG="14.296946" LAT="48.29159796" TYPE="1"/> <ACTIVITY NAME="Rote Krebs" LNG="14.283666" LAT="48.306125" TYPE="2"/> <ACTIVITY NAME="Walkers" LNG="14.286091" LAT="48.305319" TYPE="2"/> <ACTIVITY NAME="Nui" LNG="14.285788" LAT="48.304311" TYPE="3"/> <ACTIVITY NAME="Steak House" LNG="14.288819" LAT="48.307333" TYPE="3"/> <ACTIVITY NAME="John Harris Fitness" LNG="14.2915477" LAT="48.301973" TYPE="4"/> <ACTIVITY NAME="Pueblo" LNG="14.3224603" LAT="48.3266306" TYPE="4"/> <ACTIVITY NAME="Casino Linz" LNG="14.2900925" LAT="48.2979315" TYPE="5"/> <ACTIVITY NAME="Wettbuero" LNG="14.2813288" LAT="48.31123137" TYPE="5"/> <ACTIVITY NAME="Wissensturm" LNG="14.28854604" LAT="48.29136005" TYPE="6"/> <ACTIVITY NAME="Uni Linz" LNG="14.31934606" LAT="48.3378234" TYPE="6"/> <ACTIVITY NAME="Posthof" LNG="14.3120665" LAT="48.3117609" TYPE="7"/> <ACTIVITY NAME="Empire" LNG="14.30115208" LAT="48.31357423" TYPE="7"/> <ACTIVITY NAME="Brucknerhaus" LNG="14.29260131" LAT="48.31061332" TYPE="8"/> <ACTIVITY NAME="Stadtwerkstatt" LNG="14.28486858" LAT="48.31061332" TYPE="8"/> <ACTIVITY NAME="Posthof" LNG="14.3120665" LAT="48.3117609" TYPE="9"/> <ACTIVITY NAME="Kammerspiele" LNG="14.28301893" LAT="48.30400392" TYPE="9"/> <ACTIVITY NAME="Cafe Glockenspiel" LNG="14.28635338" LAT="48.30541430" TYPE="10"/> <ACTIVITY NAME="LUI" LNG="14.32217177" LAT="48.33770261" TYPE="10"/> <ACTIVITY NAME="Parkbad" LNG="14.29617027" LAT="48.31287828" TYPE="11"/> <ACTIVITY NAME="Institut Wohlgemuth" LNG="14.2784323" LAT="48.3127976" TYPE="11"/> <ACTIVITY NAME="Lentos" LNG="14.28843754" LAT="48.30836480" TYPE="12"/> <ACTIVITY NAME="Ars Electronica" LNG="14.2847997" LAT="48.31098407" TYPE="12"/></MBSSERVER>


Client

C++ win32MFC


Client Configuration

<?xml version="1.0" encoding="utf-8" ?>

<MBSCLIENT> <SERVER>localhost</SERVER> <PORT>4711</PORT> <ID>1</ID> <COM>3</COM> <STARTPOS LNG="14.315480" LAT="48.320586" ORIENT="90"/></MBSCLIENT>


Sources

All sources available at

http://code.google.com/p/moodbs/

Documents

Mood Based Navigation Shoe