MQ2 sensor test

MQ2_Test

/*
simple code to test MQ-2 Gas Sensor Detection Module
*/
const int digitalPin = 3;
const int analogPin = A0;
//declare input pins
void setup() {
  // put your setup code here, to run once:
  pinMode(digitalPin, INPUT);
  pinMode(analogPin, INPUT);
//declare pinmode
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  int analogReading = analogRead(analogPin);
  bool digitalReading = digitalRead(digitalPin);
  Serial.print(analogReading);
  Serial.print("\t");
  Serial.println(digitalReading);
  //print sensor reading on Serial
}