// NeoPixel Ring simple sketch (c) 2013 Shae Erisson
// released under the GPLv3 license to match the rest of the AdaFruit NeoPixel library

#include <tinyNeoPixel.h>


// Which pin on the Arduino is connected to the NeoPixels?
#define PIN            6

// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS      16

// When we setup the NeoPixel library, we tell it how many pixels, and which pin to use to send signals.
// Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest
// example for more information on possible values.
tinyNeoPixel pixels = tinyNeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

int delayval = 100; // delay for half a second
int PT=3;
int Pixel = 6;
int light = 0;

void setup() {
  pixels.begin(); // This initializes the NeoPixel library.
  
}

void loop() {
  light = analogRead(PT); // read and save value from PR

  // For a set of NeoPixels the first NeoPixel is 0, second is 1, all the way up to the count of pixels minus one.

  if(light > 950) {
  
  Serial.println("darkish");
    
  for (int i = 0; i < NUMPIXELS; i++) { // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255

    pixels.setPixelColor(i, pixels.Color(255, 80, 80)); // Moderately bright green color.
    pixels.show(); // This sends the updated pixel color to the hardware.
    delay(delayval); // Delay for a period of time (in milliseconds).
  }

  }

  else {
  for (int i = 0; i < NUMPIXELS; i++) { // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255 

  pixels.setPixelColor(i, pixels.Color(0, 0, 0)); // turn off
  pixels.show(); // This sends the updated pixel color to the hardware.
  delay(delayval); // Delay for a period of time (in milliseconds). 
  }

  }
}