MMA7361 sensor as a controller

The code I found on the Arduino site gave me a series of numbers however I had no idea what those numbers meant. I found some code on a blog that helped me visually see the range of numbers that my sensor was giving me. The blog is in Portuguese but I found out that Processing and Arduino are universal languages. I didn't understand the comments but i was still able to configure the code to work with my particular sensor. The code only uses the x and y axis. The code allows your sensor to flip and rotate the shape on screen

Arduino code

void setup() {

Serial.begin(9600);

}

void loop() {

int xValue = analogRead(A0);

int yValue = analogRead(A1);

int zValue = analogRead(A2);

Serial.print(xValue);

Serial.print(",");

Serial.print(yValue);

Serial.print(",");

Serial.print(zValue);

Serial.println(",");

}

Processing Code

import processing.serial.*;

Serial myPort;

float xMag, yMag = 0;

int xMin = 200;

int yMin = 200;

int zMin = 200;

int xMax = 0;

int yMax = 0;

int zMax = 0;

void setup()

{

size(640, 360, P3D);

noStroke();

colorMode(RGB, 1);

println(Serial.list());

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

myPort.bufferUntil('\n');

}

void draw()

{

background(0.5);

pushMatrix();

translate(width/2, height/2, -30);

rotateX(-xMag);

rotateZ(yMag);

scale(90);

beginShape(QUADS);

fill(1, 0, 0); vertex(-1, 0.5, 1);

fill(1, 0, 0); vertex( 1, 0.5, 1);

fill(1, 0, 0); vertex( 1, -0.5, 1);

fill(1, 0, 0); vertex(-1, -0.5, 1);

fill(0, 1, 0); vertex( 1, 0.5, 1);

fill(0, 1, 0); vertex( 1, 0.5, -1);

fill(0, 1, 0); vertex( 1, -0.5, -1);

fill(0, 1, 0); vertex( 1, -0.5, 1);

fill(1, 0, 0); vertex( 1, 0.5, -1);

fill(1, 0, 0); vertex(-1, 0.5, -1);

fill(1, 0, 0); vertex(-1, -0.5, -1);

fill(1, 0, 0); vertex( 1, -0.5, -1);

fill(0, 1, 0); vertex(-1, 0.5, -1);

fill(0, 1, 0); vertex(-1, 0.5, 1);

fill(0, 1, 0); vertex(-1, -0.5, 1);

fill(0, 1, 0); vertex(-1, -0.5, -1);

fill(0, 0, 1); vertex(-1, 0.5, -1);

fill(0, 0, 1); vertex( 1, 0.5, -1);

fill(0, 0, 1); vertex( 1, 0.5, 1);

fill(0, 0, 1); vertex(-1, 0.5, 1);

fill(0, 0, 1); vertex(-1, -0.5, -1);

fill(0, 0, 1); vertex( 1, -0.5, -1);

fill(0, 0, 1); vertex( 1, -0.5, 1);

fill(0, 0, 1); vertex(-1, -0.5, 1);

endShape();

popMatrix();

}

void serialEvent (Serial myPort) {

int xValue;

int yValue;

String inString = myPort.readStringUntil('\n');

if (inString != null) {

String[] tokens = inString.split(",");

if(tokens.length == 4) {

xValue = int(tokens[0]);

if (xValue > xMax) xMax = xValue;

if (xValue < xMin) xMin = xValue;

xValue = int(map(xValue,xMin,xMax,-90,90));

if (abs(xValue) > 6) { // pour éviter le tremblement du au bruit

xMag = xValue * PI / 180.0;

}

yValue = int(tokens[1]);

if (yValue > yMax) yMax = yValue;

if (yValue < yMin) yMin = yValue;

yValue = int(map(yValue,xMin,xMax,-90,90));

if (abs(yValue) > 6) { // pour éviter le tremblement du au bruit

yMag = yValue * PI / 180.0;

}

}

}

}