Bathroom Occupancy Monitor

My roommate is always frustrated with the rest of us making it into the bathroom before she does. Here is a remote bathroom occupancy system that can keep her in bed and happy. By utilizing the romantic light sensor workshop from last week, I was able to achieve the wireless communication between my two Xbees. The router is in a soup container placed inside of the bathroom and the coordinator is in a box by her bed side with two icon lights that allow her to know if the person has left, is only using for 5 min or for longer (taking a shower).

/*
 * *********ROMANTICLIGHTING SENSOR ********
 * detects whether your lighting is
 * setting the right mood
 * USES PREVIOUSLY PAIRED XBEE ZB RADIOS
 * by Rob Faludi http://faludi.com
 * and behnazbabazadeh 🙂
 */

/*
*** CONFIGURATION ***

 SENDER: (REMOTE SENSOR RADIO)
 ATID3456 (PAN ID)
 ATDH -> set to SH of partner radio
 ATDL  -> set to SL of partner radio
 ATJV1 -> rejoin with coordinator on startup
 ATD02  pin 0 in analog in mode
 ATIR64 sample rate 100 millisecs (hex 64)

 * THE LOCAL RADIO _MUST_ BE IN API MODE *

 RECEIVER: (LOCAL RADIO)
 ATID3456 (PAN ID)
 ATDH -> set to SH of partner radio
 ATDL  -> set to SL of partner radio

 */

#define VERSION "1.02"

int ALED = 11;
int BLED = 12;
int debugLED = 13;
int analogValue = 0;

void setup() {
  pinMode(ALED,OUTPUT);
  pinMode(BLED,OUTPUT);
  pinMode(debugLED,OUTPUT);
  Serial.begin(9600);
}

void loop() {
  Serial.println(analogValu);
  // make sure everything we need is in the buffer
  if (Serial.available() >= 21) {
    // look for the start byte
    if (Serial.read() == 0x7E) {
      //blink debug LED to indicate when data is received
      digitalWrite(debugLED, HIGH);
      delay(10);
      digitalWrite(debugLED, LOW);
      // read the variables that we're not using out of the buffer
      for (int i = 0; i<18; i++) {         byte discard = Serial.read();       }       int analogHigh = Serial.read();       int analogLow = Serial.read();       analogValue =  analogLow + (analogHigh * 256);     }   }   //    if (analogValue > 0 && analogValue <= 350) {     digitalWrite(ALED, LOW);         digitalWrite(BLED, LOW);   }   //    if (analogValue > 350 && analogValue <= 750) {     digitalWrite(ALED, HIGH);     digitalWrite(BLED, LOW);     delay (10000);     digitalWrite(ALED, LOW);     digitalWrite(BLED, HIGH);     delay(100000);       }   //    if (analogValue > 750 && analogValue <= 1023) {
    digitalWrite(ALED, LOW);
        digitalWrite(BLED, LOW);
  }

}