Recitation 9: Media Controller

For the Arduino, I used two potentiometers to adjust an analog value.

For the code: I used the multipleValues code, sending from Arduino to Processing. 

For Processing:  I used Image function and the sensor values are used to change the position of the image.

• code in Arduino:

void setup() {
Serial.begin(9600);
}

void loop() {
int sensor1 = analogRead(A0);
int sensor2 = analogRead(A1);
Serial.print(sensor1);
Serial.print(“,”); // put comma between sensor values
Serial.println(sensor2);
delay(100);
}

• code in Processing:

import processing.serial.*;

String myString = null;
Serial myPort;
PImage photo;

int NUM_OF_VALUES = 2; /** YOU MUST CHANGE THIS ACCORDING TO YOUR PROJECT **/
int[] sensorValues; /** this array stores values from Arduino **/

void setup() {
size(1300, 1300);
background(255);
setupSerial();
photo = loadImage(“1.jpg”);
}

void draw() {
updateSerial();
background(255);
printArray(sensorValues);
float x= sensorValues[0];
float y= sensorValues[1];
image(photo, x, y);
}

void setupSerial() {
printArray(Serial.list());
myPort = new Serial(this, Serial.list()[ 0 ], 9600);

myString = myPort.readStringUntil( 10 ); // 10 = ‘\n’ Linefeed in ASCII
myString = null;

sensorValues = new int[NUM_OF_VALUES];
}

void updateSerial() {
while (myPort.available() > 0) {
myString = myPort.readStringUntil( 10 ); // 10 = ‘\n’ Linefeed in ASCII
if (myString != null) {
String[] serialInArray = split(trim(myString), “,”);
if (serialInArray.length == NUM_OF_VALUES) {
for (int i=0; i<serialInArray.length; i++) {
sensorValues[i] = int(serialInArray[i]);
}
}
}
}
}