Thinking Outside the Box

Por Thomas Charveriat

 

Duración: 2 horas

Lugar: Institut Universitari de l'Audiovisual (iua)

Universitat Pompeu Fabra

Area de França

Fecha y hora: Viernes 18 de Febrero de las 16h hasta las 18h

Método: Conferencia

 

 

Los artistas de hoy en día tienen la oportunidad de crear sistemas interactivos que permiten una  actualización continua de las narrativas audiovisuales. En esta conferencia, discutiremos los medios tecnológicos para extender la interactividad más allá de una metáfora virtual creada por el ordenador. Haremos un repaso de los sensores ópticos y auditivos disponibles para crear instalaciones que envuelven los participantes de manera interactiva.

 

Sensores:

 

FSR: "Force sensing resistance"

 

( http://www.interlinkelec.com/ )

example of FSR in action: http://www.montcada5.com/HTML/08_ElectronicDrums(E1).html

 

Bend Sensor: (or FLEX)

 

This flex cable is a great component to use in data-gloves. Attach it to one finger and it will reproduce analogically your movement. It works like a potentiometer. You might want to put a resistance of 10kH in parallel in order to smooth your results

 

 

http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=121901

View a flex sensor in action: http://www.montcada5.com/HTML/20_Appliance(E2).html

 

 

Accelerometer:

 

 

Accelerometer Evaluation Board

Dual Axis - Evaluation board for the ADXL202, dual axis, 2g accelerometer.

 

 

 

http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=123383

 

or

 

http://www.alliedelec.com/Cart/ProductDetail.asp?SKU=6306008

 

(Allied Electronics also offer free samples for evaluation!)

 

View an accelerometer in action: http://www.montcada5.com/HTML/20_Appliance(E4).html

 

 

IR sensor:

 

 

This sensor takes a distance reading when enabled and reports the distance as a byte-value cooresponding to the distance between 10cm (~4") to 80cm (~30").  The interface is 4-wire and requires a JST connector which is included with each detector.

 

 

 

 

 

http://www.acroname.com/robotics/parts/R19-IR02.html

View this IR sensor in action: http://www.montcada5.com/HTML/37_TheCook(E1).html

 

 

 

 

Proximity Sensor:

 

 

The most commonly-used proximity sensor is the inductive type, which generates an electromagnetic field to sense metal objects passing close to its face. This is usually the easiest sensing technology to apply in applications where the metal object to be detected is within an inch or two of the sensor face.

 

http://www.ab.com/sensors/products/proximity_sensors/

 

application:

 

 

 

Optical Sensor:

 

 

 

Developed by Carnegie Mellon University, the CMUcam is a low-power sensor for mobile robots which can do several different kinds of on-board, real-time vision processing.

 

 

 

 

 

 

 

http://www.acroname.com/robotics/parts/R228-CMUCAM2-OV6620.html

or

 

http://www-2.cs.cmu.edu/~cmucam/

to buy: http://www.roboter-teile.de/Shop/pd122651047.htm?categoryId=2

(make sure you order the servo stands there:http://www.roboter-teile.de/Shop/pd530725445.htm?categoryId=4 )

Watch a video of the cmu-cam in action: video1 and video2

 

 

GSM-SMS connectivity to your artistic project:

There are a couple ways to achieve interactivity through telephone communication, the artist could ever choose to use a GSM module (for ex. the Siemens M20T) and get full SMS and GSM capabilities or for a cheaper option could use normal cell phones and DTMF protocols.

The GSM module Siemens M20T

Example of AT commands using the BS2X:

how to call the I.U.A:

SEROUT M20T_RX_pin,16468,["atd935422566",13]

send email:
SEROUT 9,t,["AT+CMGS=?",13] 'somehow this line is necessary
SERIN 8,t,[WAIT("$"),STR MessageOK\2\"$"]
SEROUT 15,t,[CLR,"[M20T ready?]:",STR MessageOK,13]
SEROUT 9,t,["AT+CMGS=",34,"213",34,13]
PAUSE 500
SEROUT 9,t,["tc262@columbia.edu ",SerString(0),SerString(1),SerString(2),SerString(3),SerString(4),26]'space is necessary for telefonica to discern bet. email and mess. '26 is controlz=>sendSMS, 27 is ESC=>dont send
SERIN 8,t,[WAIT(":"),SKIP 1,STR SerString\20\"$"]
SEROUT 15,t,["[M20T sent?]:",STR SerString]

GetMessage:
SEROUT To_M20T,B2400,["at+cmgr=",DEC MessageNumber,13] 'read SMS
PAUSE 10
SERIN From_M20T,B2400,2000,Stuck,[WAIT(",,"),SKIP 24,STR SerString\15\"$"] 'get message

View the GSM m20T in action:http://www.montcada5.com/HTML/42_F2T(E1).html

GSM communication via DTMF tones:

more about this kind of setup:http://www.kolumbus.fi/probyte/gsmrelay.htm

The artist will need to buy the headphone correponding to their cell phone and connect it to a DTMF transceiver chip:

http://www.parallax.com/detail.asp?product_id=604-00003

View this kind of setup there:http://www.montcada5.com/HTML/22_RemoteHiFi(E1).html

Listen to a sound sample triggered by pressing the number #2 on the user's phone once a phone communication has been established with the sculpture:

sneezing

more interested in sound chip, go there

other applications for the dtmf transceiver:

http://www.montcada5.com/HTML/24_WoodScale(E1).html

or

http://www.montcada5.com/HTML/21_Scale(E1).html

watch the video source there

 

 

More cool stuff:

using the Winbond WTS701(male)

listen to sme samples there:

sample1 sample2 sample3 sample4

buy it there:http://www.acroname.com/robotics/parts/R184-SP03.html

using the Winbond WTS701(female)

sample1 sample2 sample3

buy it there: http://www.parallax.com/detail.asp?product_id=30006