Description
I dissected a Pooh stuffed animal and substituted a red LED for his nose. I also added the FSR to his body. So now when you squeeze his body, his nose lights up; how bright his nose gets depends on how hard you squeeze him!
I also used processing to display the amount of force exerted on the FSR on a computer using the bouncing ball code.
Components Used
- Arduino Board
- Bread board
- 1 220 ohm resistor
- 1 10K ohm resistor
- 1 LED
- 1 FSR
- wiring
- 1 pooh bear
Arduino Code
/*
* one pot fades one led
* modified version of AnalogInput
* by DojoDave <http://www.0j0.org>
* http://www.arduino.cc/en/Tutorial/AnalogInput
*/
int potPin = 5; // select the input pin for the potentiometer
int ledPin = 9; // select the 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(potPin); // read the value from the sensor, between 0 - 1024
Serial.println(val);
analogWrite(ledPin, val/4); // analogWrite can be between 0-255
}
Processing Code
/*
* Arduino Ball Paint
* (Arduino Ball, modified)
* ----------------------
*
* Draw balls randomly on the screen, size controlled by a device
* on a serial port. Press space bar to clear screen, or any
* other key to generate fixed-size random balls.
*
* Receives an ASCII number over the serial port,
* terminated with a carriage return (ascii 13) then newline (10).
*
* This matches what Arduino's " Serial.println(val)" function
* puts out.
*
* Created 25 October 2006
* copyleft 2006 Tod E. Kurt <tod@todbot.com
* http://todbot.com/
*/
import processing.serial.*;
// Change this to the portname your Arduino board
//String portname = "COM12"; // or "COM5"
String portname = "/dev/tty.usbserial-A3000Xv0"; // or "COM5"
//String portname = "/dev/tty.usbserial-A4001nLv"; // or "COM5"
Serial port;
String buf="";
int cr = 13; // ASCII return == 13
int lf = 10; // ASCII linefeed == 10
void setup() {
size(300,300);
frameRate(10);
smooth();
background(40,40,40);
noStroke();
port = new Serial(this, portname, 9600);
}
void draw() {
}
void keyPressed() {
if(key == ' ') {
background(40,40,40); // erase screen
}
else {
int x = int(random(0,width));
int y = int(random(0,height));
drawball(x,y, 50);
}
}
// draw balls
void drawball(int x, int y, int r) {
for (int i=0; i<100; i++ ) {
fill(255-i,i,240);
ellipse(x,y,r,r);
}
}
// called whenever serial data arrives
void serialEvent(Serial p) {
int c = port.read();
if (c != lf && c != cr) {
buf += char(c);
}
if (c == lf) {
int val = int(buf);
println("val="+val);
int x = int(random(0,width));
int y = int(random(0,height));
drawball(x,y,val);
buf = "";
background(40,40,40); // erase screen
}
}
Images
1
2
Comments
nice job, ethan! Now pooh
nice job, ethan! Now pooh can guide santa's sleigh :)