Etch-a-sketch Hacked

what you need:
 
Ardunio uno
2 potentiometers

applications needed:
Ardunio
Processing

Step 1:

1:  Download the Ardunio library for Processing, unzip file

2:  Go to your "Sketches" directory, the default is ...Documents/Processing

3:  Create a new folder if not present called "libraries"

4:  Move the unziped directory ("arduino") into "libraries"

5:  Quit Processing

6:  Prepare your Arduino & breadboard with a two potentiometers with one wipe going to A0 and the other to A1

7:  With your Arduino connected open the Arduino IDE, and load the script from Examples / Firmata / StandardFirmata

8:  Upload that sketch to your Arduino

9:  Open Processing IDE and use the following sketch (Note: I commented out my image background)

Step 2: Schematic

Step 3: Processing Code

import processing.serial.*;
import cc.arduino.*;
Arduino arduino;

void setup() {
  size(1600, 800);
  // background(b);
  background(17, 44, 84);
 
  fill(255,0,0);
  noStroke();

  arduino = new Arduino(this, Arduino.list()[4], 57600);
  for (int i = 0; i <= 13; i++){
     arduino.pinMode(i, Arduino.INPUT);
  }
 
}

void draw() {
   
    int a0 = arduino.analogRead(0);
    int a1 = arduino.analogRead(1);
   
    ellipse(a0, a1,10,10);
}

Step 4: Soldering Connections

solder wires to potentiometers