/* Arduino Candle plus PIR sensor input and eyes output
   For just the candle effect leave the PIR sensor and eyes LEDs out of the circuit
     and/or remove the void gloweyes loop. */

int or1 = 6;    //orange1 on pin 6
int yel1 = 9;   //yellow1 on pin 9
int or2 = 10;   //orange2 0n pin 10
int yel2 = 11;  //yellow2 on pin 11
int eyes = 3;   //eyes on pin 3
int pir = 4;    //pir on pin 4

int val1;
int val2;
int val3;
int val4;
int val5;
int val6;
int val7;
int val8;

int newval1;
int newval3;
int newval5;
int newval7;
int pirval = 0;
int fireled = 0;

void setup()  {

  pinMode(or1, OUTPUT);
  pinMode(yel1, OUTPUT);
  pinMode(or2, OUTPUT);
  pinMode(yel2, OUTPUT);
  pinMode(eyes, OUTPUT);
  pinMode(pir, INPUT);
  
}

void loop()  {                          /* makes the candle effect and reads the PIR sensor */
  
  randomSeed(analogRead(0));

  val1 = random(100, 225);
  analogWrite(or1, val1);
  val2 = random(10, 30);
  delay(val2);
  
  val3 = random(128, 256);
  analogWrite(yel1, val3);
  val4 = random(20, 30);
  delay(val4);
  
  val5 = random(100, 225);
  analogWrite(or2, val5);
  val6 = random(10, 30);
  delay(val6);
  
  val7 = random(128, 256);
  analogWrite(yel2, val7);
  val8 = random(20, 30);
  delay(val8);
  
  pirval = digitalRead(pir);
  if (pirval == 1)  {
    gloweyes();
  }
    
} 

void gloweyes()  {                        /*first dims the candle LEDs*/
  
    while (fireled < 1) { 
    
    if (val1 > 25) {
      val1--;
      analogWrite(or1, val1);
      delay(3);   
      }
    
    if (val3 > 25) {
      val3--;
      analogWrite(yel1, val3);
      delay(3);
      }
      
    if (val5 > 25) {
      val5--;
      analogWrite(or2, val5);
      delay(3);
      }
      
    if (val7 > 25) {
      val7--;
      analogWrite(yel2, val7);
      delay(3);
      }
        
    
    if ((val1 < 26) && (val3<26) && (val5<26) && (val7<26)) {
        fireled = 1;
      }
   }


   for (int i=0; i<255; i++) {             /*fade the eyes up, blink, fade back down*/         
        analogWrite(eyes, i);
        delay(10);
      }
      
      delay(2500);
      analogWrite(eyes, 0);
      delay(50);
      analogWrite(eyes, 255);
      delay(150);
      analogWrite(eyes, 0);
      delay(50);
      analogWrite(eyes, 255);
      delay(600);
      analogWrite(eyes, 0);
      delay(50);
      analogWrite(eyes, 255);
      delay(2500);      
      
   for (int i=255; i>=0; i--) {
        analogWrite(eyes, i);
        delay(5);
      }
      
   while (fireled > 0) {                    /*fade the candle back up*/
    
    if (val1 < 140) {
      val1++;
      analogWrite(or1, val1);
      delay(10);
      }
    
    if (val3 < 140) {
      val3++;
      analogWrite(yel1, val3);
      delay(10);
      }
      
    if (val5 < 140) {
      val5++;
      analogWrite(or2, val5);
      delay(10);
      }
      
    if (val7 < 140) {
      val7++;
      analogWrite(yel2, val7);
      delay(10);
      }
    if ((val1==140) && (val3==140) && (val5==140) && (val7==140)) {
        fireled = 0;
      }      
    }      
                  
  }