       ambient_reading = read16(VCNL4000_AMBIENTDATA);
       proximity_reading = read16(VCNL4000_PROXIMITYDATA);
       
-      Serial.print("Ambient = ");
+#if DEBUG == 1
+      Serial.print("Analog reading = ");
+      Serial.print(photocell_reading);
+      Serial.print("\tAmbient = ");
       Serial.print(ambient_reading);
       Serial.print("\tProximity = ");
       Serial.println(proximity_reading);
+#endif
       break;
     }
     

#include <Adafruit_PWMServoDriver.h>
#include <Wire.h>
#include "pitches.h"

// **************************
// **** PROXIMITY SENSOR ****

  // Initialize serial port at 9600 baud.
  Serial.begin(9600);
  
  Wire.begin();
  pwm.begin();
  pwm.setPWMFreq(60);  // Analog servos run at ~60 Hz.
