Post date: Aug 22, 2010 7:32:14 PM
This took a little while to get but it turned out pretty well. Sometimes the potentiometers will be a little unresponsive.
Arduino Code:
int pot1 = 1; //delcare variables
int pot2 = 2;
int val = 0;
void setup() {
Serial.begin(9600); //data will ne sent and received 9600 bps
}
//I will be using the punctuation method for this code
void loop() {
val = analogRead(pot1); //read the first potentiometer and store it in val
Serial.print(val, DEC); // print the valuse just stored
Serial.print(","); //print a comma to organize data
val = analogRead(pot2); //read the second potentiometer and store it in val
Serial.println(val, DEC); //print the value just stored
}
Processing Code:
import processing.serial.*; //import the processing library
Serial myPort; //delcare variables
float xpos;
float ypos;
void setup() {
size (500, 500); //set the window siae to 500x500
myPort = new Serial(this, Serial.list()[0], 9600);
myPort.bufferUntil('\n'); //store values in a buffer
background(255); //sets the background color to white
}
void draw() {
fill(0); //sets the fill color to black
stroke(0);//sets the outline color to black
ellipse(xpos, ypos, 3, 3); //draw a circle at the designated postion
}
void serialEvent(Serial myPort) {
String myString = myPort.readStringUntil('\n'); // read the buffer
if (myString !=null) {
myString = trim(myString);
int sensors[]= int(split(myString, ',')); //split string at commas
for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++){
print ("Sensor" + sensorNum + ":" + sensors[sensorNum] + "\t"); //print values
}
println();
if (sensors.length > 1) {
xpos = map(sensors [1], 0, 1023, 0, 500); // set values so circles stays in window
ypos = map(sensors [2], 0, 1023, 0, 500);
}
}
}