gistfile1.txt

/*
  Analog Input
 Demonstrates analog input by reading an analog sensor on analog pin 0 and
 turning on and off a light emitting diode(LED)  connected to digital pin 13.
 The amount of time the LED will be on and off depends on
 the value obtained by analogRead().

 The circuit:
 * Potentiometer attached to analog input 0
 * center pin of the potentiometer to the analog pin
 * one side pin (either one) to ground
 * the other side pin to +5V
 * LED anode (long leg) attached to digital output 13
 * LED cathode (short leg) attached to ground

 * Note: because most Arduinos have a built-in LED attached
 to pin 13 on the board, the LED is optional.


 Created by David Cuartielles
 modified 30 Aug 2011
 By Tom Igoe
 modified 6 Jan 2017 
 By Maruf Maniruzzaman
 
 This example code is in the public domain.

 http://www.arduino.cc/en/Tutorial/AnalogInput

 */

int sensorPin = A0;    // select the input pin for the potentiometer
int sensorValue = 0;  // variable to store the value coming from the sensor
int newSensorValue = 0;
void setup() {
  Serial.begin(9600);
}

void loop() {  
  // read the value from the sensor:
  newSensorValue = analogRead(sensorPin);
  if(abs(newSensorValue - sensorValue) > 5){
    sensorValue = newSensorValue;
    Serial.println(sensorValue);
  }
  delay(10);
}