Medicine opening detector - Morgan Wallace

The purpose of this device is to trigger an alarm when someone opens a bottle of medicine. The device uses an arduino with potentiometer for analog input. Once a certain threshold value from the potentiometer is reached then the alarm is triggered and increases in pitch as you continue to unscrew off the cap. The photocell is a motion detector that continues to vary the pitch until the cap is screwed back on. The values of the two analog inputs are summed and input into a Piezzo speaker which converts this integer into a sound.
*Note the picture shows a bluetooth shield on top of my Arduino, it is currently not used for this project.
 
Code
The code is based off of the Thereamin example from lab. I first modified it to accept another photocell to make a double theramin. Once I had the idea for the medicine alarm, I changed it to a potentiometer and left the wires the same. 
Another change was adding the threshold as a condition into the play cycle loop. The threshold stops any piezzo noise before a certain value from the potentiometer has been reached. 
The cycle loop was also modified to play a continuously variable noise instead of a note of a specific duration.
 

/* 

Medicine alarm arduino code - requires a potentiometer in a medicine container taped to the cap.

 */

int potPin = 0;// input pin for the photocell

int photoPin1 = 1;// select the input pin for the pot

int speakerPin = 7;

int val = 0;

int val1 = 0;

void setup() {

  pinMode(speakerPin, OUTPUT); 

  Serial.begin(9600);

  Serial.println("ready");

}

void loop() {

  digitalWrite(speakerPin, LOW);

  val = analogRead(potPin);    // read value from the pot

  val = val;    // process the value a little

  val1 = analogRead(photoPin1);    // read value from the photosensor

  val1 = val1;    // process the value a little

  //val = val/2;                 // process the value a little

  if (val<250){ //this condition makes is so the alarm doesn't go off unless the cap is opened

  for( int i=0; i<1; i++ ) {  // play it for 50 cycles

    Serial.println(val1);

    digitalWrite(speakerPin, HIGH);

    delayMicroseconds((val+val1));

    digitalWrite(speakerPin, LOW);

    delayMicroseconds((val+val1));

  }

  }

}