#include <Adafruit_NeoPixel.h>

#define PIN 6
#define NUMPIXELS 72

int mq3;


Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_RGB + NEO_KHZ800);

void setup() {
  pinMode(A0, INPUT);

  pixels.begin();
  Serial.begin(9600);
}

void loop() {
  mq3 = analogRead(A0);
  mq3 = map(mq3, 0, 1023, 0, 10);

  Serial.print("Alcohol: ");
  Serial.println(mq3);

  if(mq3 < 6)
  {
    for(int i=0; i<=NUMPIXELS; i++)
    {
      pixels.setPixelColor(i, pixels.Color(0, 150, 0));
      pixels.show();
    }

    delay(200);

    for(int i=0; i<=NUMPIXELS; i++)
    {
      pixels.setPixelColor(i, pixels.Color(0, 0, 0));
      pixels.show();
    }

    delay(200);

  }


  else
    {
      for(int i=0; i<NUMPIXELS; i++)
      {
       pixels.setPixelColor(i, pixels.Color(150, 0, 0));
       pixels.show();  
      }
      
    }

}