Wave Plotter Program

serialEvents.pde

void serialEvent(Serial myPort) {
  String ardIn = myPort.readStringUntil(linefeed);

  if (ardIn != null) {
    ardIn = trim(ardIn);
    input = float(split(ardIn, ','));
    printArray(input[0]);
    if (counter%4 == 0 && counter !=0) {
      println("DIG EV");
      digitalEvent=true;
      counter++;
    } else {
      println("ANA EV");
      analogEvent=true;
      counter++;
    }
    delay(200);
  }
}


void eventHappen() {
  if (analogEvent) {
    for (int j = 1; j < n; j++)
      analog[j-1] = analog[j];

    for (int i = 0; i < 1; i++) 
      analog[n-1] = input[i];
    analogEvent=false;
  }
  if (digitalEvent) {
    for (int j = 1; j < n; j++)
      digital[j-1] = digital[j];

    for (int i = 0; i < 1; i++) 
      digital[n-1] = input[i];
    digitalEvent=false;
  }
}

WavePlotter.pde

//The EEGen Project
//Created by Galya Oberman
//theeegenproject.wordpress.com

import processing.serial.*;

PGraphics canvas;
Serial myPort;

int linefeed = 10;
float[] input = new float[1]; //temporary store for values
float[] digital = new float[200];
float[] analog = new float [200]; //2D array for point plotting
int n = 200; //number of points onscreen at a time 
int counter = 1;
boolean analogEvent = false;
boolean digitalEvent = false;

void setup() {
  size(1000, 250); 
  canvas = createGraphics(1000, 250); 
  canvas.beginDraw();
  canvas.endDraw();

  myPort = new Serial(this, Serial.list()[0], 9600);
  myPort.bufferUntil(linefeed);

  println(Serial.list());

  //can change to initialize to fix incoming wave/line onscreen

  for (int j = 1; j < n; j++)
    analog[j] = 450;
}

void draw() {
  background(255);
  smooth();

  stroke(102, 102, 255);
  strokeWeight(1); // wave midlines
  line(0, 125, 1000, 125);

  stroke(255, 51, 51);
  strokeWeight(4); // wave boundaries
  line(0, 0, 1000, 0);
  line(0, 249, 1000, 249);

  stroke(0);
  strokeWeight(2);
  noFill();

  eventHappen();

  translate(0, -50);
  beginShape();
  for (int j = 0; j < n; j++) {//plot all points for whole wave
    vertex(j*5, (1333 - analog[j])/5);
  }
  endShape();
}

void keyPressed() {
  if (key == 's' || key == 'S') {
    save("C:/Users/Galya's/Desktop/The EEGen Program/WaveMatrixOneInputNew/data/output/INITIALS-" + month() + "-" + day() + "-" + hour() + "-" + minute() + "-" + second() + ".tif"); //change to own file path
    println((millis()/1000.0) + " seconds: SCREENSHOT");
  }
}

The EEGen Program - https://gist.github.com/galyaobe/b93cac3edaf8a7afa42bd923b95fe8da
Circuit - http://www.pdf-archive.com/2016/05/14/circuitsheet/circuitsheet.pdf