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

#define trigger 18

#define echo 19

float time=0,distance=0;

void setup()

{

pinMode(trigger,OUTPUT);

pinMode(echo,INPUT);

}

void loop()

{

digitalWrite(trigger,LOW);

delayMicroseconds(2);

digitalWrite(trigger,HIGH);

delayMicroseconds(10);

digitalWrite(trigger,LOW);

delayMicroseconds(2);

time=pulseIn(echo,HIGH);

distance=time*340/20000;

}