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

In this project the implementation of code for “Measuring distance of an object using ultrasonic distance sensor (28015 Ping) and also smoothen the sensor data using moving average filter”.

MASTER CODE:

//MASTER
#include//i2c communication hedder file
#include//lcd disply headder file
LiquidCrystal lcd(12,11,5,4,3,2);
void setup()
{
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("Ultrasonicsensor");
delay(100);
lcd.clear();
Wire.begin(); //enable the I2C communication
Serial.begin(9600);

}

void loop()
{

Wire.requestFrom(2,8); //address of slave and bytes quatity
byte CMReceive = Wire.read();//receive data from slave
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("Distance in CM");
lcd.setCursor(0,1);
lcd.print(CMReceive);
Serial.println("Distance in CM");
Serial.println(CMReceive);
delay(2000);
lcd.clear();
byte INCHReceive = Wire.read();//receive from slave
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("Distance in INCH");
lcd.setCursor(0,1);
lcd.print(INCHReceive);
Serial.println("Distance in INCH");
Serial.println(INCHReceive);
delay(500);
//lcd.clear();

}

SLAVE:

#include// headder file for i2c communication
int CM = 0;
int inch = 0;
int duration = 0; // variable decleration
void setup()
{

pinMode(12, OUTPUT); // pin mode decleration
pinMode(11, INPUT);
Wire.begin(2); //i2c communication begin
Wire.onRequest(requestEvent); // recieve from master
Serial.begin(9600);

}

void loop()
{
}

void requestEvent() // isr fun
{

digitalWrite(12, LOW);
delayMicroseconds(2);
digitalWrite(12, HIGH);
delayMicroseconds(2);
digitalWrite(12, LOW);
duration = pulseIn(11, HIGH); //ultrosonic wave time travel
CM = 0.01723 * duration;// formula to convert the cm
Serial.println(CM);
Wire.write(CM);//write the value in wire
inch = (CM / 2.54); // inch conversion
Wire.write(inch);//write the value in wire
Serial.println(inch);

}

CIRCUITS:

EXECUTION: