Experiment 1

/*
  Library for the MMA8452Q
  By: Jim Lindblom and Andrea DeVore
  SparkFun Electronics

  Do you like this library? Help support SparkFun. Buy a board!
  https://www.sparkfun.com/products/14587

  This sketch uses the SparkFun_MMA8452Q library to initialize
  the accelerometer and stream raw x, y, z, acceleration
  values from it.

  Hardware hookup:
  Arduino --------------- MMA8452Q Breakout
    3.3V  ---------------     3.3V
    GND   ---------------     GND
  SDA (A4) --\/330 Ohm\/--    SDA
  SCL (A5) --\/330 Ohm\/--    SCL

  The MMA8452Q is a 3.3V max sensor, so you'll need to do some
  level-shifting between the Arduino and the breakout. Series
  resistors on the SDA and SCL lines should do the trick.

  License: This code is public domain, but if you see me
  (or any other SparkFun employee) at the local, and you've
  found our code helpful, please buy us a round (Beerware
  license).

  Distributed as is; no warrenty given.
*/

#include <Wire.h>                 // Must include Wire library for I2C
#include "SparkFun_MMA8452Q.h"    // Click here to get the library: http://librarymanager/All#SparkFun_MMA8452Q

MMA8452Q accel;                   // Create instance of the MMA8452 class

void setup() {
  Serial.begin(9600);             // Sets the data rate in bits per second (baud) for serial data transmission. 
  Serial.println("MMA8452Q Raw Data Reading Code!");
  Wire.begin();

  if (accel.begin() == false) {
    Serial.println("Not Connected. Please check connections and read the hookup guide.");
    while (1);
  }
}

void loop() {
  if (accel.available()) {      // Wait for new data from accelerometer
    // Raw of acceleration of x, y, and z directions
    Serial.print(accel.getX());
    Serial.print("\t");         // This prints a tab so you can distinguish the numbers
    Serial.print(accel.getY());
    Serial.print("\t");
    Serial.print(accel.getZ());
    Serial.println();           // New line
  }
}

//import Serial communication library
import processing.serial.*;

Serial myPort;  // Create object from Serial class
String myString = null;
float num;
int lf = 10;    // Linefeed in ASCII code; a linefeed means moving one line forward. The code is \n.

void setup()
{
  String portName = Serial.list()[0]; //change the 0 to a 1 or 2 etc. to match your port
  myPort = new Serial(this, portName, 9600);
}

void draw() {
  while (myPort.available() > 0) {
    myString = myPort.readStringUntil(lf);
    if (myString != null) {
  print(myString);  // Prints String but without the tabs
  num=float(myString);   // Converts and prints float, this does not work most of the time
  println(num);          // because when there is a minus in the second or third number
    }                    // it's not a number (NaN)
  }
}

#include <Wire.h>                 // Must include Wire library for I2C
#include "SparkFun_MMA8452Q.h"    // Click here to get the library: http://librarymanager/All#SparkFun_MMA8452Q

MMA8452Q accel;                   // Create instance of the MMA8452 class

void setup() {
  Serial.begin(9600);             // Sets the data rate in bits per second (baud) for serial data transmission. 
  //  Serial.println("MMA8452Q Raw Data Reading Code!"); // This messes up the integer arrays 
  Wire.begin();
  
  if (accel.begin() == false) {
    Serial.println("Not Connected. Please check connections and read the hookup guide.");
    while (1);
  }
}

void loop() {
  if (accel.available()) {      // Wait for new data from accelerometer
    // Raw of acceleration of x, y, and z directions
    Serial.print(accel.getX());
    Serial.print(",");         
    Serial.print(accel.getY());
    Serial.print(",");
    Serial.print(accel.getZ());
    Serial.println();           // New line
    delay(50);                  // This delay is neccessary because Processing can't handle the speed (after a few moments it tries to combine two values into one int and that gives an error) 
  }
}

//import Serial communication library
import processing.serial.*;

Serial myPort;  // Create object from Serial class
String myString = null;
int lf = 10;    // Linefeed in ASCII code

void setup()
{
  String portName = Serial.list()[0]; //change the 0 to a 1 or 2 etc. to match your port
  myPort = new Serial(this, portName, 9600);
}

void draw() {
  while (myPort.available() > 0) {
    myString = myPort.readStringUntil(lf);
    if (myString != null) {
      //print(myString);  
      String[] list = split(myString, ",");
      // printArray(list);

      int[] intList = new int[list.length];
      for (int i = 0; i < list.length; i++)
      {
        intList[i] = Integer.parseInt(list[i].trim()); // this has to be trimmed, because of
      }          // this issue: https://stackoverflow.com/questions/27604918/parseint-processing
      printArray(intList);  
      println();
    }
  }
}

      pushMatrix();
      translate(300, 400);
      ellipse(intList[0], intList[1], 5, 5);  
      popMatrix();
      int strokeInput = abs(intList[2]/8);
      fill(strokeInput, strokeInput, strokeInput);