Code:

/*
 * Servo Control Serial
 * modified for TUI October 2007
 * Servo Serial Better
 * -------------------
 *
 * Created 18 October 2006
 * copyleft 2006 Tod E. Kurt <tod@todbot.com>
 * http://todbot.com/
 *
 * adapted from "http://itp.nyu.edu/physcomp/Labs/Servo"
 */
#include <Servo.h>

Servo myservo; // create servo object to control a servo
int servoPin = 7; // Control pin for servo motor

int pos = 0; // variable used to store data from serial port

int minPulse = 0; // minimum pulse width
int maxPulse = 100; // maximum pulse width

void setup() {
 pinMode(servoPin, OUTPUT); // Set servo pin as an output pin
 pos = minPulse; // Set the motor position to the minimum
 Serial.begin(9600); // connect to the serial port
 Serial.println("Servo control program ready");
 myservo.attach(7); // attaches the servo on pin 9 to the servo object
}

void loop() {
 for (pos = minPulse; pos <= maxPulse; pos += 1) { // goes from 0 degrees to 180 degrees
 // in steps of 1 degree
 myservo.write(pos); // tell servo to go to position in variable 'pos'
 delay(7); // waits 7ms for the servo to reach the position
 }
 for (pos = maxPulse; pos >= minPulse; pos -= 1) { // goes from 180 degrees to 0 degrees
 myservo.write(pos); // tell servo to go to position in variable 'pos'
 delay(5); // waits 5ms for the servo to reach the position
 }
}



AND ALSO

/*
 * Servo Control Serial
 * modified for TUI October 2007
 * Servo Serial Better
 * -------------------
 *
 * Created 18 October 2006
 * copyleft 2006 Tod E. Kurt <tod@todbot.com>
 * http://todbot.com/
 *
 * adapted from "http://itp.nyu.edu/physcomp/Labs/Servo"
 */
#include <Servo.h>

Servo myservo; // create servo object to control a servo
int servoPin = 7; // Control pin for servo motor

int pos = 0; // variable used to store data from serial port

int minPulse = 0; // minimum pulse width
int maxPulse = 115; // maximum pulse width
int correction = 55;
int count = 0;

void setup() {
 pinMode(servoPin, OUTPUT); // Set servo pin as an output pin
 pos = minPulse; // Set the motor position to the minimum
 Serial.begin(9600); // connect to the serial port
 Serial.println("Servo control program ready");
 myservo.attach(7); // attaches the servo on pin 9 to the servo object
}

void loop() {
 for (count = 0; count <= 2; count +=1) {
 for (pos = correction; pos <= maxPulse; pos += 1) { // goes from 0 degrees to 180 degrees
 // in steps of 1 degree
 myservo.write(pos); // tell servo to go to position in variable 'pos'
 delay(7); // waits 7ms for the servo to reach the position
 }
 for (pos = maxPulse; pos >= correction; pos -= 1) { // goes from 180 degrees to 0 degrees
 myservo.write(pos); // tell servo to go to position in variable 'pos'
 delay(5); // waits 5ms for the servo to reach the position
 }
}
 for (count = 0; count <= 7; count +=1) {
 for (pos = minPulse; pos <= correction; pos += 1) { // goes from 0 degrees to 180 degrees
 // in steps of 1 degree
 myservo.write(pos); // tell servo to go to position in variable 'pos'
 delay(7); // waits 7ms for the servo to reach the position
 }
 for (pos = correction; pos >= minPulse; pos -= 1) { // goes from 180 degrees to 0 degrees
 myservo.write(pos); // tell servo to go to position in variable 'pos'
 delay(5); // waits 5ms for the servo to reach the position
 }
}


}

img_6347-mov img_6346-mov

Code:

/* Play Melody
 * -----------
 *
 * Program to play melodies stored in an array, it requires to know
 * about timing issues and about how to play tones.
 *
 * The calculation of the tones is made following the mathematical
 * operation:
 *
 * timeHigh = 1/(2 * toneFrequency) = period / 2
 *
 * where the different tones are described as in the table:
 *
 * note frequency period PW (timeHigh) 
 * c 261 Hz 3830 1915 
 * d 294 Hz 3400 1700 
 * e 329 Hz 3038 1519 
 * f 349 Hz 2864 1432 
 * g 392 Hz 2550 1275 
 * a 440 Hz 2272 1136 
 * b 493 Hz 2028 1014 
 * C 523 Hz 1912 956
 *
 * (cleft) 2005 D. Cuartielles for K3
 */

int ledPin = 13;
int potPin = A0;
int speakerOut = 7; 
//byte names[] = {'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C'}; 
//int tones[] = {1915, 1700, 1519, 1432, 1275, 1136, 1014, 956};

byte names[] ={ 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C', 'D', 'E', 'F', 'G', 'A', 'B'}; 
unsigned int tones[] = { 1915, 1700, 1519, 1432, 1275, 1136, 1014, 956, 852, 759, 716, 639, 568, 506};

byte melody[] = "3F3A3F9E5p3F3A3F5E2p3D3F3D4C2p3D8A8G1p3D8A8G1p3D1p9D8p";

int val = 0;
int count = 0;
int count2 = 0;
int count3 = 0;
int MAX_COUNT = 28;
int statePin = LOW;

void setup() {
// pinMode(ledPin, OUTPUT); 
 pinMode(speakerOut, OUTPUT);
}

void loop() {
 digitalWrite(speakerOut, LOW);
 val = analogRead(potPin); // read value from the sensor
if (val > 0 ){ 
 for (count = 0; count < MAX_COUNT; count++) {
 statePin = !statePin;
 digitalWrite(ledPin, statePin);
 for (count3 = 0; count3 <= (melody[count*2] - 48) * 30; count3++) {
 for (count2=0;count2<15;count2++) {
 if (names[count2] == melody[count*2 + 1]) { 
 digitalWrite(speakerOut,HIGH);
 delayMicroseconds(tones[count2]);
 digitalWrite(speakerOut, LOW);
 delayMicroseconds(tones[count2]);
 } 
 if (melody[count*2 + 1] == 'p') {
 // make a pause of a certain size
 digitalWrite(speakerOut, 0);
 delayMicroseconds(500);
 }
 }
 }
 }
}
}

Code:

/*
 This example is meant to read three analog sensors (potentiometers are easiest)
 and sends their values serially. The Processing and Max/MSP programs at the bottom
 take those three values and use them to change the background color of the screen.

 [Dina's addition:
 In the event of only one potentiometer being attached, all three analog inputs
 will be affected in the same way.]

 The circuit:
 * potentiometers attached to analog inputs 0, 1, and 2

 http://www.arduino.cc/en/Tutorial/VirtualColorMixer

 created 2 Dec 2006
 by David A. Mellis
 modified 30 Aug 2011
 by Tom Igoe and Scott Fitzgerald
 modified on 24 Sept 2016
 by Dina Bseiso

 This example code is in the public domain.

 */

int sensorPin = A0; // select the input pin for the potentiometer for pulse
int sensorValue = 0; // variable to store the value coming from the sensor



const int redledPin = 9;
const int blueledPin = 10;
const int greenledPin = 11; // select the pin for the LED

void setup() {
 // declare the ledPin as an OUTPUT:
 pinMode(redledPin, OUTPUT);
 pinMode(blueledPin, OUTPUT);
 pinMode(greenledPin, OUTPUT);
 Serial.begin(9600);
}

void loop() {
 Serial.print(analogRead(redledPin));
 Serial.print(",");
 Serial.print(analogRead(greenledPin));
 Serial.print(",");
 Serial.println(analogRead(blueledPin));
 // read the value from the sensor:
 sensorValue = analogRead(sensorPin);
 // turn the ledPin on
 digitalWrite(redledPin, HIGH);
 digitalWrite(blueledPin, HIGH);
 digitalWrite(greenledPin, HIGH); 
 // stop the program for <sensorValue> milliseconds:
 delay(sensorValue);
 // turn the ledPin off:
 digitalWrite(redledPin, LOW);
 digitalWrite(blueledPin, LOW);
 digitalWrite(greenledPin, LOW);
 // stop the program for for <sensorValue> milliseconds:
 delay(sensorValue);
}

/* PROCESSING SKETCH
 * Arduino Painting Tension
 * (from Arduino Ball, modified 2008, and then by Dina on 2016)
 * ---------------------- 
 *
 * Change the color on the screen depending on
 * the amount of pressure applied to an FSR.
 *
 * Created 24 September 2016
 * Dina Bseiso
 */
import processing.serial.*;
// Change this to the portname your Arduino board
String portname = "/dev/cu.usbmodem1441"; // or "COM5"
Serial myPort;
String buf="";
int cr = 13; // ASCII return == 13
int lf = 10; // ASCII linefeed == 10



float redValue = 0; // red value
float greenValue = 0; // green value
float blueValue = 0; // blue value

int serialVal = 0;
int serialValAmplified = 0;


void setup() {
 size(300,300);
 frameRate(10);
 smooth();
 ellipseMode(CENTER);
 background(40,40,40);
 noStroke();
 myPort = new Serial(this, portname, 9600); 
}

void draw() {
 // set the background color with the color values:
 background(redValue, greenValue, blueValue);
}

// called whenever serial data arrives
void serialEvent(Serial myPort) {
 // get the ASCII string:
 String inString = myPort.readStringUntil('\n');
 println(inString);

 if (inString != null) {
 // trim off any whitespace:
 inString = trim(inString);
 // split the string on the commas and convert the
 // resulting substrings into an integer array:
 float[] colors = float(split(inString, ","));
 // if the array has at least three elements, you know
 // you got the whole thing. Put the numbers in the
 // color variables:
 if (colors.length >=3) {
 //println(colors);
 // map them to the range 0-255:
 if (colors[0] >= 700) {
 blueValue = map(colors[2], 0, 1023, 150, 255);
 greenValue = map(colors[1], 1023, 0, 75, 150);
 redValue = map(colors[0], 1023, 0, 0, 75);
 }
 else if (colors[0] >= 300) {
 greenValue = map(colors[1], 1023, 0, 150, 255);
 blueValue = map(colors[2], 0, 1023, 75, 150);
 redValue = map(colors[0], 1023, 0, 75, 150);
 }
 else if (colors[0] >= 0) {
 redValue = map(colors[0], 1023, 0, 150, 255);
 greenValue = map(colors[1], 0, 1023, 75, 175);
 blueValue = map(colors[2], 0, 1023, 0, 75);
 }
 }
 }
}