//DigiStumpNeoPixelCandle.INO

// Todd Andersen
// 20-OCT-18
// NeoPixel Pinout: (Round side left) Di, +5, GND, Do (Flat side right)
// ATtiny85 Pinout: PB0, PB1, PB2, PB3, PB4, PB5 (Silk screens)

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif
#define PIN 0 // ATtiny85 PB0 to Di NeoPixel
#define NUMPIXELS 1 // Number of NeoPixels attached to ATtiny85
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_RGB);

long randDelay; // Random delay (50 to 250 mSec) 
long randNumber; // Random number (0 to 255)

void setup(){
  pixels.begin(); // Initializes NeoPixel library
  randomSeed(11); // Random seed (11) 

  pinMode (1,OUTPUT); // +5
  pinMode (2,OUTPUT); // GND
}

void loop(){  
  digitalWrite (1,HIGH); // +5
  digitalWrite (2,LOW); // GND
  
  randNumber = random(0,155); // Sudo-random RGB values 0,0,0 to 255,255,255 (R,G,B)
  randDelay = random(50,500); // Sudo-random values 50 up to 250 (mSec)
  for(int i=0;i<NUMPIXELS;i++){ // Update pixel colors
    
    pixels.setPixelColor(i, pixels.Color(randNumber+100,randNumber,randNumber)); // Set RED (R)
    pixels.show(); // Update pixel color
    delay(randDelay); // Sudo-random delay (On time)

    pixels.setPixelColor(i, pixels.Color(randNumber,randNumber+100,randNumber)); // GRN (G)
    pixels.show();
    delay(randDelay);

    pixels.setPixelColor(i, pixels.Color(randNumber,randNumber,randNumber+100)); // BLU (B)
    pixels.show();
    delay(randDelay);
    
    pixels.setPixelColor(i, pixels.Color(0,0,0)); // NeoPixel OFF
    pixels.show();
    delay(randDelay+250); // Off time (mSec)
  }
}