So as you all know, my final project did not function the way it was intended to.  With this outcom, though, I am not discouraged.  I want to continue my work with muscle wire and create project that work and amaze people.  During the summer, I am going to make this piece work, and when I do, I will post an update video.

 */

// this constant won’t change.  It’s the pin number
// of the sensor’s output:
 const int pingPin = 7;
 const int ledPin = 9;

 int  fadeValue, fadeValue2 ;

void setup()

  {
      // initialize serial communication:
         Serial.begin(9600);
   }

void loop()
 {

//————-Get-Distance—————————–//
   // establish variables for duration of the ping,
  // and the distance result in inches and centimeters:
   long duration, inches, cm, cm2;

  // The PING))) is triggered by a HIGH pulse of 2 or more microseconds.
   // Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
     pinMode(pingPin, OUTPUT);
     digitalWrite(pingPin, LOW);
     delayMicroseconds(2);
     digitalWrite(pingPin, HIGH);
     delayMicroseconds(5);
     digitalWrite(pingPin, LOW);

  // The same pin is used to read the signal from the PING))): a HIGH
  // pulse whose duration is the time (in microseconds) from the sending
  // of the ping to the reception of its echo off of an object.
     pinMode(pingPin, INPUT);
    duration = pulseIn(pingPin, HIGH);

  // convert the time into a distance
     inches = microsecondsToInches(duration);
     cm = microsecondsToCentimeters(duration);
  //————-End-Get-Distance—————————-//

  //————-Fading-LED——————————//
  if (cm<40)   // If Distance is less than 40 cm then do the following:

 {    // Maps the LED brightness inversely proportional to the distance

  cm2 = 40 – cm;

  fadeValue2 = map(cm2 , 0, 40, 0, 254);

  analogWrite(ledPin, fadeValue2);  // Writes the fadeValue to pin 9
 }
 else
 {
   analogWrite(ledPin, 0);  //If distance is larger than 40cm then switch off

 }
 //————-End-Fading-LED—————————–//

 //————-Debugging——————————-//
   //For debugging purposes

    Serial.print(inches);
    Serial.print(“in, “);
    Serial.print(cm);
    Serial.print(“cm”);
    Serial.println();
    Serial.print(“Centi 2  :”);
    Serial.print(  fadeValue2 );

   Serial.println();
//————-End-Debugging——————————//

 
  delay(10);  // Short Delay allows for smoother fading

 }  //End Loop

//————-Functions——————————-//
long microsecondsToInches(long microseconds)
 {
   // According to Parallax’s datasheet for the PING))), there are
   // 73.746 microseconds per inch (i.e. sound travels at 1130 feet per
   // second).  This gives the distance travelled by the ping, outbound
   // and return, so we divide by 2 to get the distance of the obstacle.
   // See: http://www.parallax.com/dl/docs/prod/acc/28015-PING-v1.3.pdf
   return microseconds / 74 / 2;
 }

long microsecondsToCentimeters(long microseconds)
 {
   // The speed of sound is 340 m/s or 29 microseconds per centimeter.
   // The ping travels out and back, so to find the distance of the
   // object we take half of the distance travelled.
   return microseconds / 29 / 2;
 }

 //————End-Functions——————————-//

//End Of Program

My video—–