LiMOtrRóniCa

[ 2-4 de julio, 2008 ]

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LA PERIFERIA
presenta:

<:><:><:><:><[LiM0tRónICa]><:><:><:><:>

Hechos:
? Hay muchísima gente que come limones en México
? Los limones se pueden usar como baterías.
? Los limones pueden hacer ruido si los obligas a hacerlo.

LiMOtrRóniCa es un performance audio/visual experimental e instalación
desarrollada en Junio del 2008 durante una residencia en LA PERIFERIA
(Mérida, México). La pieza consiste en una serie de experimentaciones
electrónicas que utilizan aparatos electronicos hechos a mano,
software de código abierto y limones.

Realizamos alquimia en limones ? los presionamos para hacer sonidos y
los hacemos ?chillar?.

LiMOtRóniCa es una colaboración entre LAN Pa®ty [Alexandre Quessy +
Darsha Hewitt] y los estudiantes en el curso de OPENSOURCE PRACTICES -
COLLABORATIVE APPROACHES AND EXPERIMENTAL ELECTRONICS FOR ARTISTS
llevado acabo en la Escuela Superior de Artes de Yucatán (ESAY).

A los artistas les gustaría agradecer a LA PERIFERIA, ESAY + sus
alumnos de arte, Byrt Wammack y a Ana Rosa Duarte Duarte por su apoyo.

El evento empezará con Ciclanimación, un performance de animación
cuadro por cuadro ejecutado en tiempo real por LAN Pa®ty y los
estudiantes del taller OPENSOURCE PRACTICES – COLLABORATIVE APPROACHES
AND EXPERIMENTAL ELECTRONICS FOR ARTISTS. Ciclanimación utiliza
ToonLoop, un software de contenido generado por los usuarios que fue
desarrollado por Alexandre Quessy.

Jueves 3 de Julio del 2008 // 8 PM
Entrada Libre

Galeria La Periferia
cale 54 #468 x 53 y 55,centro
Mérida, Yucatán, México
52 999 9241923
info@galerialaperiferia.com
www.galerialaperiferia.com

Just letting Darsha enjoy the power of the ReacTIVision Software.

and just to know there’s a little information about the free software.

reacTIVision 1.4

reacTIVision is an open source, cross-platform computer vision framework for the fast and robust tracking of fiducial markers attached onto physical objects, as well as for multi-touch finger tracking. It was mainly designed as a toolkit for the rapid development of table-based tangible user interfaces (TUI) and multi-touch interactive surfaces. This framework has been developed by Martin Kaltenbrunner and Ross Bencina at the Music Technology Group at the Universitat Pompeu Fabra in Barcelona, Spain as part of the the reactable project, a novel electronic music instrument with a table-top multi-touch tangible user interface.

Using a pin as output, if we change it very quickly from HIGH to LOW with a little delay between each change, we can generate a square wave. If you want to generate other audio wave forms, you might want to check the Glade library. You can also get a very nice white noise with a random delayMicroseconds between HIGH and LOW transitions.

I talked enough ! Here is the code :


/*
* La Cucaracha with an Arduino and a PC speaker.
* The calculation of the tones is made following the mathematical
* operation:
*
* timeUpDown = 1/(2 * toneFrequency) = period / 2
* )c( Copyleft AlexandreQuessy 2006 http://alexandre.quessy.net
* Inspired from D. Cuartielles's http://www.arduino.cc/en/Tutorial/PlayMelody
*/

period = ((1000000 / timeUp) / 2) * TEMPO_SECONDS;
for (i = 0; i < period; i++) {
digitalWrite(speakerOut, HIGH);
delayMicroseconds(timeUp);
digitalWrite(speakerOut, LOW);
delayMicroseconds(timeUp);
}
/* Uncomment this if you want notes to be discrete */
/* delay(50); */
}
digitalWrite(speakerOut, LOW);
delay(1000);
}


Arduino es una plataforma open-hardware basada en una sencilla placa con entradas y salidas (E/S), analógicas y digitales, y en un entorno de desarrollo que implementa el lenguaje Processing/Wiring.

Su corazón es el chip Atmega8, un chip sencillo y de bajo coste que permite el desarrollo de múltiples diseños.

Al ser open-hardware tanto su diseño como su distribución es libre. Es decir, puede utilizarse libremente para desarrollar cualquier tipo de proyecto sin tener que adquirir ningún tipo de licencia

Arduino puede utilizarse en el desarrollo de objetos interactivos autónomos o puede conectarse a un PC a través del puerto serie utilizando lenguajes como Flash, Processing, MaxMSP, etc … Las posibilidades de realizar desarrollos basados en Arduino tienen como límite la imaginación.

aki el link para que vean el mixeerrrrr

Big thanks to my sensei Darsha san

This is a page from your Intro to Circuit Bending guide. Go HERE to download the who guide and learn more about bending

so it actually works although it brings down the level quite a bit, kind of like an attenuator pad @ -10db in a mixing board , an interesting thing!!! maybe it would be cool to actually measure the attenuation and see how much is the value @.

we could be selling paper attenuator pads inside a black box and be rich!! hahaha..

despues de pensarlo mucho decidi quedarme otros dias para tomar el taller!!! feliz, asi que os dare lata tios y tias.. joder es que mola mucho el taller.. viva la madre patria.. hahaha.

see semana 3 for the esquemática y lista de componentes

Componentes
1 x LM556 (circuito integrado)
1 x 9 volt battery
1 x 9 volt battery clip
1 x audio jack (female rca)
1 x on/off toggle switch
1 x 500k Linear Potentiometer
1 x Alligator clip
1 x 1k resistor (1/4 watt)
1 x 10k resistor (1/4 watt)
1 x 4.7k resistor (1/4 watt)
1 x 10 nf (103) capacitor
1 x 100nf (104) capacitor
1 x 10 uf electrolytic capacitor (polarized) (5 volt to 15 volt wattage rating)

Woody y Steina Vasulka, 1978

sonido  

Here are a few informations on how to use a 555 Timer to create square waves. It can be used to make sound or to make lights blink, and so on.

Here is a nice page about it.

Also, check this PDF for a diagram that will be easy to make.

Here is a little explanation on how it works.

…and search on google for “555 timer”.

I decided to bend my Oxygen 8 Keyboard! and build in a passive line mixer in there!!… with the assistance of Darsha of course. Here are two new potenciometers just installed I still have to find space for 4 more, and also a good place for the inputs (RCA) but it should look something close to the drawing!

YA SE ROMPIO EL JUGUETE!

ok ok… no lo pude armar otra ves… en fin…  hoy experimentamos con ruiditos de los juguetes y usamos nuevamente nuestro microfono piezzoelectrico que hicimos ayer mmm.. debe salir en la foto… en algun lugar… es como Donde esta wally … 

porcierto llegando a mi casa me quede mirando la tele con un desarmador….  me gano el panico de pensar que no habia nada adentro.. ahhh!!!

aqui esta el registro de lo que explico spiro! 

On Monday June 15th the first circuit bending workshop in the peninsula of Yucatan was held at Esay´s Escuela de Artes visuales/ferrocarriles (Visual Arts School) by Two Canadian artists Darsha Hewit an Alexandre Quessy. It´s the first Circuit bending workshop ever in the Yucatan and hopefully not the last one, it will be 3 weeks long of fun and interaction with electronics, thirsty for knowledge students a squeaky roof and enough spanish practice to have our Canadian friends sing the Cucaracha.

Piezo electric mics tour

On the second day we used a piezo component and converted it to a Mic after some basic soldering (soldering a RCA jack) the next asigment was using the piezo mic to amplify anything that we could think of. that is where the fun part started…. as you can imagine we tried everything till we ended up amplifying the schools bathroom…. nop! nobody was using them and more importantly nobody’s bladder was hurt!

Here is RCA Jack

Hola.

My name is Alexandre Quessy. I am fascinated by electronics arts, interactive explorations, sounds, music, programming and much more. You can read me (in french) on my web site alexandre.quessy.net. I manage the DataFlow Wiki and am much involved into Montréal’s new media art scene.

Here is a little song through which you will know me a little better…

Chanson médias interactifs 2006