1. Oktober 2012
I worked with the Piezo and light sensors, to experiment the communication between arduino and processing.
I attached the piezo sensor to a metal sheet, this creates vibrations and when this vibrations reach a certain point it counts up, like a graphical counter, my first idea, and stil a work in process was to create a pedometer (step counter).
Then I brought together with this graphical counter, a light sensor, that at first would change the background color, making it a bit more interactive and responsive to gestures. At the end i was experimenting a bit with sound too, you can hear a bit of noise, that should had been drums.
This is what i used:
and this a short video of what it does:
https://vimeo.com/50532739
ARDUINO CODE:
#define VIBRATION A0
#define LIGHT A1
int oldValue = 0;
void setup()
{
Serial.begin(9600);
}
void loop()
{
int currValue = analogRead(VIBRATION); // Hier werden die Werte abgerufen
int currValue2 = analogRead(LIGHT); // Hier werden die Werte abgerufen
//currValue = 0.4*oldValue + 0.6*currValue; // Smoothing Funktion
Serial.print(currValue); // Anzeigen der Werte über Serial Monitor
Serial.print(currValue2); // Anzeigen der Werte über Serial Monitor
Serial.print(',');
Serial.println();
oldValue = currValue; // Hier wird der aktuelle Wert als oldValue gespeichert
oldValue = currValue2; // Hier wird der aktuelle Wert als oldValue gespeichert
}
PROCESSING CODE: (STIL NEEDS SOME IMPROVEMENT)
import ddf.minim.*;
import processing.serial.*;
import ddf.minim.signals.*;
import javax.sound.sampled.*;
Serial myPort;
Minim minim1;
AudioPlayer song1;
//AudioSample snare;
AudioOutput out1;
int firstValue = 1023;
int secondValue = 60;
int widthShape = 40;
int heightShape = 40;
int counter = 0;
int currShape = 0;
void setup()
{
size(800, 800, P3D);
myPort = new Serial(this, "/dev/tty.usbserial-A7005Ov4", 9600);
minim1 = new Minim(this);
// load BD.wav from the data folder
out1 = minim1.getLineOut(Minim.STEREO);
song1 = minim1.loadFile("drum_1.wav", 1024);
//if ( song1 == null ) println("Didn't get kick!");
// load SD.wav from the data folder
// snare = minim.loadSample("drum_2.wav", 2048);
// if ( snare == null ) println("Didn't get snare!");
}
void draw()
{
for (int y= 0; y< 20; y++)
{
for (int x= 0; x< 20; x++)
{
currShape = x+20*y;
if (counter <= currShape)
{
fill(0);
}
else
{
fill(255);
background(secondValue);
}
{
beginShape();
vertex(x*widthShape, y*heightShape);
vertex(x*widthShape+30, y*heightShape+30);
vertex(x*widthShape+60, y*heightShape+60);
vertex(x*widthShape, y*heightShape+60);
endShape();
}
}
}
if (firstValue < 980)
{
counter ++;
}
// if (secondValue > 100)
// {
// counter ++;
// }
if ( secondValue > 250)
{
song1.play();
}
}
//if ( secondValue > 200 ) snare.trigger();
void stop()
{
// always close Minim audio classes when you are done with them
song1.close();
//snare.close();
minim1.stop();
out1.close();
super.stop();
}
void serialEvent(Serial myPort)
{
if (myPort.available()> 0)
{
//println("Daten sind da");
String completeString = myPort.readStringUntil(10);
if (completeString != null) // If there is valid data insode
{
trim(completeString);
String seperateValues[] = split(completeString, ",");
firstValue = int(seperateValues[0]);
secondValue = int(seperateValues[1]);
//vib = int(seperateValues[0]);
}
}
}
