rotating person

Description

Use FSR to control rotation of image

I tried to rotate a picture of person by the FSR sensor. I calculated the rotation angle to rotate 360 degree when the val is 255, so the rotation angle was PI*2*val/255 in radian. I was hoping to show movement, but it got to just add layers of the image on top.

http://www.youtube.com/watch?v=GEgq_jCXUBg

Arduino Code

/*
 * Resistive Sensor Input
 * Takes the input from a resistive sensor, e.g., FSR or photocell
 * Dims the LED accordingly, and sends the value (0-255) to the serial port
 */
int sensorPin = 2;  // select the input pin for the sensor
int ledPin = 9;    // select the output pin for the LED
int val = 0;        // variable to store the value coming from the sensor
void setup() {
  Serial.begin(9600);
}
void loop() {
  val = analogRead(sensorPin); // read the value from the sensor, 0-1023
  analogWrite(ledPin, val/4);  // analogWrite (dimming the LED) can be between 0-255
  Serial.println(val/4);       // writing the value to the PC via serial connection
  delay(50);                   // rest a little...
}

Processing Code

/*
 * TUI Homework - Kylie Han
 * Created 22 Febrary 2011
 */
import processing.serial.*;
// Change this to the portname your Arduino board
String portname = "COM4";
Serial port;
int val;
PImage img;

void setup() {
  size(800,800);
  frameRate(10);
  smooth();
  background(255,255,255);
  noStroke();
  port = new Serial(this, portname, 9600);
}

void draw() {
  if(0<port.available()) {
     val = port.read();
  }
    println(val);
    img = loadImage("chris.png");
    translate(width/2,height/2);
    rotate(PI*2*val/255);
    image(img,-400,-400,800,800);
}