erratica » arduino

P(h)ixel_02

coche — Thu, 28 May 2009 04:47:52 +0000

So this is a bit more refined version of the P(h)ixel. For one, the structure is now laser-cut plexi and way less embarrasing than before. Second, it allowed for the test with the latex, which, is already giving me nightmares. I’m calling this thing my-own-private-videodrome.

[flv:phyxel5.flv phixel5.jpg 500 375]

A few things to resolve:
Re-centering the vertical element.
Lowering production cost (servos are clunky and gets expensive fast!).
Create a field!

[flv:phyxel4.flv phixel4.jpg 500 375]

P(h)ixel_01

coche — Wed, 27 May 2009 14:59:01 +0000

This is the first crapotype of the p(h)ixel: a physical pixel that reacts to changes in the environment. The pixel is part of a larger matrix that can create a low-res mapping of the environment by pushing or pulling on a flexible membrane. The first test clip is after the jump below.
Oh and for the record, I used my teeth to cut the cardboard…

[flv:phyxel1.flv phyxel1.jpg 500 375]

Servo Control

coche — Fri, 17 Apr 2009 23:34:11 +0000

[flv:servo_02.flv servo_02.jpg 500 375]

A servo controlled by a photo-resistor. I know, not that interesting, but I’m working on that…

Arduino / Wiring


//The code uses Michal Rinott's 'Knob' code. I just swapped resistors.
//connect the servo

//yellow is control - connect to pin 9 pwm

//red is power

//black is gnd
#include 
Servo myServo;
int potPin = 0;

int val;
void setup (){

pinMode (potPin, INPUT);

myServo.attach (9);

Serial.begin (9600);

}
void loop (){

val = analogRead (potPin);

val = map (val, 0,1023,0,179); // convert to values in the 180 range

myServo.write (val);

delay (100);

Serial.println (val);

}

Arduino Confetti

coche — Mon, 23 Mar 2009 05:19:47 +0000

A photoresistor controlling the size, color, alpha and placement of the circles in processing.

Code and clip after the jump below.

[flv:arduino_confetti.flv arduino_confetti.jpg 500 375]

//Processing


import processing.serial.*;
Serial myPort;

int val;     
void setup()

{

  size(200, 200);

  smooth ();

  String portName = Serial.list()[0];

  myPort = new Serial(this, portName, 9600);

}
void draw(){
  if ( myPort.available() > 0) {

    val = myPort.read();

  }
  if (val > 20) {

  fill (random (val),random (val), random (val),  val*1.25);

  ellipse (random (val),random (val),val/4,  val/4);
}
  if (val >20){

  println (val);

  }

}
//arduino + wiring
int potPin = 0;

int val = 0;
void setup (){

  Serial.begin (9600);

}
void loop (){

  val = analogRead (potPin)/4;

  delay (100);

  Serial.print (val, BYTE);

  Serial.println();

}

Two Leds, Two Resistors

coche — Thu, 12 Feb 2009 23:28:44 +0000

Currently reading the data from two photocell resistors and controlling the blink rate of two led’s with it. Right now they work one after the other, I’m still trying to figure out if it’s possible to make them work so that each resistor controls each led independently yet simultaneously. Brandt any ideas?

Code after the jump


int ledPin1 = 11; //led 1

int ledPin2 = 12;  //led 2

int resPin1 = 0;  //resistor 1

int resPin2 = 1;  //resistor 2

int var1 = 0;  //value 1

int var2 = 0;  //value 2
void setup (){

  //setup pins for leds as outs

  pinMode (ledPin1, OUTPUT);

  pinMode (ledPin2, OUTPUT);

  //startup serial to read values

  Serial.begin (9600);

}
void loop (){

  //led 1 on / off based on read

  var1 = analogRead (resPin1);

  digitalWrite (ledPin1, HIGH);

  delay (var1);

  digitalWrite (ledPin1, LOW);

  delay (var1);

  //print values led 1

  Serial.println ("var1 ");

  Serial.print (var1);

  Serial.println();

//led 2 on/off based on read var2 = analogRead (resPin2); digitalWrite (ledPin2, HIGH); delay (var2); digitalWrite (ledPin2, LOW); delay (var2); //print values led2 Serial.println ("var2 "); Serial.print (var2); Serial.println (); }

Arduino 02

brandt — Sat, 07 Feb 2009 22:16:56 +0000

Until I find a better method for posting to multiple blogs, you can view my first and subsequent posts on my Living Architecture blog:

http://las09p.blogspot.com/2009/02/arduino-02.html

Hello World

brandt — Tue, 27 Jan 2009 23:49:39 +0000

I’m apprehensive as to what to post here, but super excited to be getting my hands dirty with the arduino. I’ve just researched so many fascinating projects, everything is so new and amazing to me. I’m planning on developing my arduino research through some iPhone programming, and I’ll try to share up a bit of both as I go along.

I will mention that I immediately rushed down to the NYU Computer Store today after finding out that they sold arduino boards. It’s the only place in the city that I’ve been able to find so far. They really have a great selection of parts and reference material at good prices. The guy helping me even gave me a list of packages they offer from the “Basic Tool Kit” to the “Basic Parts Kit” which includes an arduino and all the bits you would need for a long time, including various resistors, LEDs, semiconductors, capacitors, and switches.

Finally, I did pick up two reads while there:

by Dave Mark" width="57" height="75" />

Beginning iPhone Development: Exploring the iPhone SDK by Dave Mark

by Tom Igoe" width="62" height="75" />

Making Things Talk: Practical Methods for Connecting Physical Objects by Tom Igoe

more later…