Project 2 - Measuring the distance of an object using ultrasonic sensor and also smoothen the sensor data using moving average filter

#include

#define trigger 18

#define echo 19

LiquidCrystal lcd(2,3,4,5,6,7);

float time=0,distance=0;

void setup()

{

lcd.begin(16,2);

pinMode(trigger,OUTPUT);

pinMode(echo,INPUT);

lcd.print(" Ultra sonic");

lcd.setCursor(0,1);

lcd.print("Distance Meter");

delay(2000);

lcd.clear();

lcd.print(" Circuit Digest");

delay(2000);

}

void loop()

{

lcd.clear();

digitalWrite(trigger,LOW);

delayMicroseconds(2);

digitalWrite(trigger,HIGH);

delayMicroseconds(10);

digitalWrite(trigger,LOW);

delayMicroseconds(2);

time=pulseIn(echo,HIGH);

distance=time*340/20000;

lcd.clear();

lcd.print("Distance:");

lcd.print(distance);

lcd.print("cm");

lcd.setCursor(0,1);

lcd.print("Distance:");

lcd.print(distance/100);

lcd.print("m");

delay(1000);

}