shuvo-hit

const int AOUTpin=0;//the AOUT pin of the alcohol sensor goes into analog pin A0 of the arduino
const int DOUTpin=8;//the DOUT pin of the alcohol sensor goes into digital pin D8 of the arduino
const int ledPin=13;//the anode of the LED connects to digital pin D13 of the arduino
const int NormalHigh=600;
int flag;
int limit;
int value;

//Include LCD library
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);




void displaycontrol(int prt) {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  //Serial.print(prt);
  //Serial.print("\n");
  //Print a message to second line of LCD
  //lcd.print(prt);
  if (prt==1){
    //lcd.print("Chemical");
    lcd.print("YES");
  }
  else{
    //lcd.print("Normal");
    lcd.print(" ");
    lcd.print("NO");
  }
}




void setup() {
Serial.begin(115200);//sets the baud rate
pinMode(DOUTpin, INPUT);//sets the pin as an input to the arduino
pinMode(ledPin, OUTPUT);//sets the pin as an output of the arduino

  // set up the LCD's number of columns and rows:
lcd.begin(16, 2);
  // Print a message to the LCD.
lcd.print("Food Chemical ==");
}


void loop()
{
value= analogRead(AOUTpin);//reads the analaog value from the alcohol sensor's AOUT pin
limit= digitalRead(DOUTpin);//reads the digital value from the alcohol sensor's DOUT pin
Serial.print("Alcohol value: ");
Serial.println(value);//prints the alcohol value
Serial.print("Limit: ");
Serial.print(limit);//prints the limit reached as either LOW or HIGH (above or underneath)
delay(100);
if (value >600){
digitalWrite(ledPin, HIGH);//if limit has been reached, LED turns on as status indicator
Serial.print("Alcohol");
flag=1;
displaycontrol(flag);
}
else{
digitalWrite(ledPin, LOW);//if threshold not reached, LED remains off
Serial.print("Normal");
flag=0;
displaycontrol(flag);
}
}